You searched for subject:(biofilter).
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NSYSU
1.
Wu, Ching-yi.
Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds.
Degree: Master, Environmental Engineering, 2009, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831109-151712 
► Sulfur-containing organic solvents or carbon disulfide have been used extensively in semiconductor, TFT-LCD, and synthetic fiber (viscous rayon) industries in the last decades. These compounds…
(more)
▼ Sulfur-containing organic solvents or carbon disulfide have been used extensively in semiconductor, TFT-LCD, and synthetic fiber (viscous rayon) industries in the last decades. These compounds can easily be converted into reduced-sulfur ones which exhibit low odor threshold characteristics and arise public complaints once releasing into environments. This paper intended to oxide these compounds by both chemical and biological approaches for the purpose of odor reduction.
The first topic was investigations on the oxidation of aqueous DMS (dimethyl sulfide) by using sodium hypochlorite as an oxidant. Results indicated that with an initial DMS concentration of 100 mg/L, it required only 0.75 min or 45 s to convert the DMS completely into its final oxidation product, DMSO2 (dimethyl sulfur dioxide). The required dosage of the oxidant was a little less than the theoretical value. In addition, it was found that initial pH of the batch reaction liquid be kept at around 8.2 for achieving a neutral final solution which emitted only a trace of gaseous chlorine and hydrochloric acid odors.
The second one was a trail investigation on the biodegradation of gas-borne hydrogen sulfide and carbon disulfide by a trickling-bed
biofilter packed solely with fern chips. Glucose and milk powder were used as main nutrients for microbial film development and enhancer for the biodegradation of sulfides. Results indicated that after an acclimation period of around two months, approximately 99 and 86% of the influent hydrogen sulfide (10-20 ppm) and carbon disulfide (20-60 ppm), respectively, could be removed with an empty bed retention time of around 63 s for the gas in the packed bed. Both neutral or acidic environments were suitable for the biodegradation reaction and the metabolites (mainly, sulfuric acid) could easily be removed from the chips by washing them with water. In the future, efforts should be done to increase the removal capacity of carbon disulfide.
Advisors/Committee Members: Mei-Jywan Syu (chair), Ming-Shean Chou (committee member), Yuan-Chung Lin (chair).
Subjects/Keywords: NaOCl; biofilter; DMS; Carbon disulfide
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APA (6th Edition):
Wu, C. (2009). Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831109-151712
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wu, Ching-yi. “Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds.” 2009. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831109-151712.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wu, Ching-yi. “Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds.” 2009. Web. 10 Apr 2021.
Vancouver:
Wu C. Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831109-151712.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wu C. Biological and chemical oxidation of gas-borne odorous sulfur-containing compounds. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831109-151712
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Minnesota
2.
Liew, Feng Jin.
Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass).
Degree: M.S.B.A.E., Biosystems and Agricultural Engineering, 2017, University of Minnesota
URL: http://hdl.handle.net/11299/194651
► Fungi can improve biofiltration of hydrophobic pollutants by improving capture, a rate-limiting step in bioreactors. We prospected fungi alongside native biofilm preparations and relevant controls…
(more)
▼ Fungi can improve biofiltration of hydrophobic pollutants by improving capture, a rate-limiting step in bioreactors. We prospected fungi alongside native biofilm preparations and relevant controls for their efficacy capturing methane using gas-phase biofilters. Using a batch incubation system, we found that Ganoderma lucidum performed best in single-strain trials. Building on this, we tested other Ganoderma species and found comparable efficacies. The advantages of Ganoderma and Pleurotus isolates were lost and native colonizers wood substrates were deployed in the field, irrespective of where they were deployed. This relates to a stress-tolerant rather than competitive life history strategy, where Ganoderma species are outcompeted in less stressful environments. We also tested an alternative way to present Ganoderma for filtration. Using protocols for culinary and biomaterial applications, we re-tested several fungi, including Lentinus edodes ‘shiitake.’ In these trials, we found surprisingly high efficacy with Ganoderma mycelia (84%) relative to activated carbon. These results suggest that Ganoderma species might best be utilized for biofiltration in dried form, effective in field conditions and potentially more amenable for biofiltration indoors.
Subjects/Keywords: Biofilter; Fungi; Hydrophobic; Hydrophobin; Methane
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APA (6th Edition):
Liew, F. J. (2017). Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass). (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/194651
Chicago Manual of Style (16th Edition):
Liew, Feng Jin. “Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass).” 2017. Masters Thesis, University of Minnesota. Accessed April 10, 2021.
http://hdl.handle.net/11299/194651.
MLA Handbook (7th Edition):
Liew, Feng Jin. “Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass).” 2017. Web. 10 Apr 2021.
Vancouver:
Liew FJ. Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass). [Internet] [Masters thesis]. University of Minnesota; 2017. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/11299/194651.
Council of Science Editors:
Liew FJ. Prospecting Fungi For Methane Biofiltration Reveals High-Efficiency Capture By Dried Mycelia (Necromass). [Masters Thesis]. University of Minnesota; 2017. Available from: http://hdl.handle.net/11299/194651
Cal Poly
3.
Fooks, Kyle Keoki Tatsuo.
Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater.
Degree: MS, Civil and Environmental Engineering, 2013, Cal Poly
URL: https://digitalcommons.calpoly.edu/theses/1054
;
10.15368/theses.2013.89
► Reciprocating biofilters known as ReCip is a viable technology to manage nutrients, mainly nitrogen, problems at livestock operations such as swine farms and dairies.…
(more)
▼ Reciprocating biofilters known as ReCip is a viable technology to manage nutrients, mainly nitrogen, problems at livestock operations such as swine farms and dairies. Past studies have demonstrated that ReCip is more adept at total nitrogen (TN) removal than traditional subsurface flow wetland systems. The traditional substrate used to attach biomass was rock aggregate; this media may be hard to obtain for some agricultural projects, so alternate substrates are tested and compared with the rock aggregate. The purpose of the study was twofold: first, different biofilm media were tested and compared in terms of treatment performance and, second, the long-term performance of a ReCip in continuous operation for 3 years was characterized.
Four, 2.67 square meter ReCip systems with different treatment media – rock aggregate, recycled concrete aggregate (RCA), vertical-flow plastic media, and walnut shells – were operated at a 2-day THRT over the course of a 16 week study. The TN removal efficiencies for rock aggregate, RCA, plastic media, and walnut shell media were 43%, 53%, 25%, and 69% respectively. Surface based mass TN removal rates for the same media were 103, 128, 172, and 276 kg/ha-d respectively.
A 134.2 square meter ReCip with rock aggregate media was running concurrently with the smaller ReCip systems. This ReCip was constructed ant operated since January 2010. TN removal efficiency and mass removal rate were 44% and 105 kg/ha-day. These values were close to results from the smaller rock media system.
Advisors/Committee Members: Trygve Lundquist.
Subjects/Keywords: Biofilter; Nitrogen Removal; Environmental Engineering
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APA (6th Edition):
Fooks, K. K. T. (2013). Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/1054 ; 10.15368/theses.2013.89
Chicago Manual of Style (16th Edition):
Fooks, Kyle Keoki Tatsuo. “Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater.” 2013. Masters Thesis, Cal Poly. Accessed April 10, 2021.
https://digitalcommons.calpoly.edu/theses/1054 ; 10.15368/theses.2013.89.
MLA Handbook (7th Edition):
Fooks, Kyle Keoki Tatsuo. “Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater.” 2013. Web. 10 Apr 2021.
Vancouver:
Fooks KKT. Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater. [Internet] [Masters thesis]. Cal Poly; 2013. [cited 2021 Apr 10].
Available from: https://digitalcommons.calpoly.edu/theses/1054 ; 10.15368/theses.2013.89.
Council of Science Editors:
Fooks KKT. Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater. [Masters Thesis]. Cal Poly; 2013. Available from: https://digitalcommons.calpoly.edu/theses/1054 ; 10.15368/theses.2013.89
Louisiana State University
4.
Yue, Yiying.
Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature.
Degree: MSCE, Civil and Environmental Engineering, 2013, Louisiana State University
URL: etd-12232013-211220
;
https://digitalcommons.lsu.edu/gradschool_theses/1075
► Industrial wood processing operations generate a variety of gaseous emissions containing volatile organic compounds (VOCs). One of the VOCs emitted from the processing of coniferous…
(more)
▼ Industrial wood processing operations generate a variety of gaseous emissions containing volatile organic compounds (VOCs). One of the VOCs emitted from the processing of coniferous softwood tree species is β-caryophyllene, a naturally occurring sesquiterpene of environmental concern. One approach that may be attractive for treating gaseous emissions of β-caryophyllene from wood processing operations is the use of fixed-film processes commonly referred to as biofiltration. Previously, it was established that β-caryophyllene can be successfully treated via biofiltration at temperatures in the mesophilic range. Many gaseous emissions from industrial wood processing operations, however, are higher in temperature than those employed in the initial report on the treatability of β-caryophyllene via biofiltration. This thesis describes experiments carried out to test the ability of a laboratory-scale biofilter operated at elevated temperature level (50°C) to remove β-caryophyllene from contaminated air. Results from experiments presented here demonstrate that it is technically feasible to treat β-caryophyllene even at high temperature. Results also demonstrate that with a properly selected microbial enrichment and inoculation strategy, the successful startup of a high temperature biofilter can be achieved over a time interval comparable to that previously reported for biofilters operated in the mesophilic temperature regime. Collectively, the results expand understanding of β-caryophyllene treatment by biofiltration.
Subjects/Keywords: β-Caryophyllene; Bioreactor; Degradation; Biofilter
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APA (6th Edition):
Yue, Y. (2013). Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature. (Masters Thesis). Louisiana State University. Retrieved from etd-12232013-211220 ; https://digitalcommons.lsu.edu/gradschool_theses/1075
Chicago Manual of Style (16th Edition):
Yue, Yiying. “Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature.” 2013. Masters Thesis, Louisiana State University. Accessed April 10, 2021.
etd-12232013-211220 ; https://digitalcommons.lsu.edu/gradschool_theses/1075.
MLA Handbook (7th Edition):
Yue, Yiying. “Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature.” 2013. Web. 10 Apr 2021.
Vancouver:
Yue Y. Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature. [Internet] [Masters thesis]. Louisiana State University; 2013. [cited 2021 Apr 10].
Available from: etd-12232013-211220 ; https://digitalcommons.lsu.edu/gradschool_theses/1075.
Council of Science Editors:
Yue Y. Biofilter Treatment of Gas Phase β-Caryophyllene at Elevated Temperature. [Masters Thesis]. Louisiana State University; 2013. Available from: etd-12232013-211220 ; https://digitalcommons.lsu.edu/gradschool_theses/1075
University of Canterbury
5.
Detchanamurthy, Swaminathan.
Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor.
Degree: PhD, Chemical Engineering, 2013, University of Canterbury
URL: http://dx.doi.org/10.26021/3273
► In this work, a differential biofiltration reactor was used to explore the potential of metabolic uncouplers to improve pollutant (toluene) degradation rates. Metabolic uncouplers were…
(more)
▼ In this work, a differential biofiltration reactor was used to explore the potential of metabolic uncouplers to improve pollutant (toluene) degradation rates. Metabolic uncouplers were reported to reduce the cell mass in activated sludge systems, but are untested in biofilters and the current work is the first to report the impact of different metabolic uncouplers in a biofilter. Initially soil was used as a biofilter bed and later experiments were conducted in pure cultures in a biofilm reactor.
A simple diffusion system was developed to generate the desired concentration of toluene to the system. Gas chromatography and a carbon dioxide analyzer were connected online to the reactor which improved the precision of the data collected and also the robustness of the measurements.
Preliminary experiments including effect of substrate concentration, different nutrients and temperature were done to optimize the conditions before starting the metabolic uncoupler screening studies in soil. Based on the results, inlet toluene concentration between 180 ppm and 250 ppm was used throughout the studies. Also it was found that the toluene degraders were nitrogen limited. Temperature studies showed that the elimination capacity (EC) increased with increasing temperature, from 34 ± 1.4 g.m-3.h-1 to 49.8 ± 2.6 g.m-3.h-1 for temperatures of 20 to 45 °C, respectively.
Nine potential metabolic uncouplers were screened in batch serum bottles. The nine uncouplers tested were dinitrophenol (dNP), p-nitrophenol (pNP), benzoic acid (BA), carbonylcyanide p-trifluoromethoxy phenylhydrazone (FCCP), carbonylcyanide m-chloromethoxy phenylhydrazone (CCCP), pentachlorophenol (PCP), malonic acid (MA), m-chlorophenol (mCP) and 2, 4, 6-trichlorophenol (TCP). Other than dNP and pNP (nitrogen containing uncouplers), seven other uncouplers were further tested in the differential biofilter reactor. Only PCP and TCP increased the toluene degradation rate significantly. PCP increased the toluene degradation rate by 35% at 140 µM, whereas 4051 µM TCP increased the rate by 18%. Though FCCP behaved as a classical uncoupler when compared with others, the EC increase was not significant.
Five toluene degraders were isolated from soil subjected to toluene and were identified using 16s rDNA/18s rDNA analysis. Out of five, two potential toluene degraders, Stenotrophomonas maltophilia and Pseudomonas putida were used to develop a biofilm reactor. PCP, TCP and CCCP were tested in the biofilm reactors and found that PCP increased the surface elimination capacity (SEC) by 85% at 140 µM in S. maltophilia biofilm reactor and CCCP increased the SEC by 27% at 1 µM in P. putida biofilm reactor. Finally a simple model was developed to calculate the energy uncoupling coefficient for non-growth systems like ours to quantitatively represent the uncoupling mechanism.
Subjects/Keywords: biofilter; metabolic uncoupler; toluene
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APA (6th Edition):
Detchanamurthy, S. (2013). Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/3273
Chicago Manual of Style (16th Edition):
Detchanamurthy, Swaminathan. “Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor.” 2013. Doctoral Dissertation, University of Canterbury. Accessed April 10, 2021.
http://dx.doi.org/10.26021/3273.
MLA Handbook (7th Edition):
Detchanamurthy, Swaminathan. “Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor.” 2013. Web. 10 Apr 2021.
Vancouver:
Detchanamurthy S. Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor. [Internet] [Doctoral dissertation]. University of Canterbury; 2013. [cited 2021 Apr 10].
Available from: http://dx.doi.org/10.26021/3273.
Council of Science Editors:
Detchanamurthy S. Impact of Different Metabolic Uncouplers on the Specific Degradation Rate of Toluene in a Differential Biofiltration Reactor. [Doctoral Dissertation]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/3273
University of Alberta
6.
Miazga-Rodriguez, Misha D.
Dynamics of bacterial communities in a pilot scale methane
biofilter.
Degree: MS, Department of Biological Sciences, 2014, University of Alberta
URL: https://era.library.ualberta.ca/files/ng451h74s
► Methane is the second most important greenhouse gas after carbon dioxide with a global warming potential over 100 years 25 times that of CO2. Today,…
(more)
▼ Methane is the second most important greenhouse gas
after carbon dioxide with a global warming potential over 100 years
25 times that of CO2. Today, anthropogenic sources of methane
comprise 60% of the global methane budget per year and tools for
mitigating emissions have become increasingly important to limit
climate change. One such tool is methane biofilters (MBF) which
utilize biological metabolism, mainly the metabolism of methane
oxidizing bacteria (MOB), to scrub methane. To date, the majority
of research on MBFs has focussed on the physical aspects of
biofilter function rather than the biological component. In this
study, bacterial and MOB communities in a pilot scale MBF were
studied over the course of a year to assess how these communities
change over time and in response to the presence or absence of CH4.
The bacterial and MOB communities were assessed by analyzing 16S
rRNA and methane monooxygenase subunit A (pmoA) genes using DGGE,
T-RFLP, RFLP, and qPCR methodologies. The MBF bacterial community
composition changed in response to the presence or absence of
methane. The MOB community composition was unaffected by methane
input; the dominant community members being related to the
Methylomicrobium and Methylobacter genera and lower abundance
members belonging to the Methylocaldum and Methylocystis genera.
The size of the bacterial community and the MOB community was
numerically larger when methane was present and smaller when
methane was absent. Enrichment experiments yielded a MOB related to
the Methylomicrobium genus. No published studies could be found
that presented both pmoA sequence data or provided general
bacterial community information from a functional pilot scale MBF
as a function of methane input. Hence, the data from this study add
new information to our understanding of bacterial community
dynamics in a pilot scale MBF.
Subjects/Keywords: methane; microbial ecology; microbiology; methane biofilter; methane oxidizing bacteria; methanotroph; biofilter
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APA (6th Edition):
Miazga-Rodriguez, M. D. (2014). Dynamics of bacterial communities in a pilot scale methane
biofilter. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/ng451h74s
Chicago Manual of Style (16th Edition):
Miazga-Rodriguez, Misha D. “Dynamics of bacterial communities in a pilot scale methane
biofilter.” 2014. Masters Thesis, University of Alberta. Accessed April 10, 2021.
https://era.library.ualberta.ca/files/ng451h74s.
MLA Handbook (7th Edition):
Miazga-Rodriguez, Misha D. “Dynamics of bacterial communities in a pilot scale methane
biofilter.” 2014. Web. 10 Apr 2021.
Vancouver:
Miazga-Rodriguez MD. Dynamics of bacterial communities in a pilot scale methane
biofilter. [Internet] [Masters thesis]. University of Alberta; 2014. [cited 2021 Apr 10].
Available from: https://era.library.ualberta.ca/files/ng451h74s.
Council of Science Editors:
Miazga-Rodriguez MD. Dynamics of bacterial communities in a pilot scale methane
biofilter. [Masters Thesis]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/ng451h74s
NSYSU
7.
Huang, Hao-lun.
Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes.
Degree: Master, Environmental Engineering, 2004, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0909104-002152
► In response to growing concern over volatile organic compounds (VOCs) biofiltration is becoming an established economical air pollution control technology for removing VOCs from waste…
(more)
▼ In response to growing concern over volatile organic compounds (VOCs) biofiltration is becoming an established economical air pollution control technology for removing VOCs from waste air stream. This study armed to develop a trickle-bed
biofilter to treat emitted VOCs stream from a piant blending process. Analytical results demonstrated that the VOCs conceratration range is 10 to 1500 ppm calibrated as methane and the major components of the emitted gases are toluene, xyluene, isobutanol, methyl-isopropyl ether, etc.
Originally, a full-scale biotrickling filter of 6m à 6m in inner cross-sectional area packed with wood chips(10 cm à 10 cm à 2 cm) to a height of 4 m was used to treat the vent gas with a flow rate of 270 m3/min. A recycle water rate of 400 L/min and a nutrient liquid (acid digested liquor of bird feather) addition rate of 1L/day. Under these operation parameters, the average VOC removal efficiency of the original trickling filter of 28% which was not as good as expected. To improve the efficiency, a pilot
biofilter constructed from a 0.3-m x 1.6-m (OD x H) plastic column packed with fam chips to a height of 1 m was used for treating a sample stream of the vent gas. Empty bed retention times in the range of 9.82 to 20 s, corresponding inlet flow rates of 0.68 to 0.27 m3/min and the organic loading rates of 5.18 to 10.37 g/m3.hr were used. As the empty bad retention times was getting shorter, the removal efficiency become lower (from 80 to 75.56%). When the organic loading rose to 186.65 g/m3.hr, the removal efficient also got down to 24%. As the gas temperature droped to 10OC,the removal efficient also decreased to 43%.
Advisors/Committee Members: none (committee member), none (chair), none (chair).
Subjects/Keywords: VOC; biotrickling; biofilter
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APA (6th Edition):
Huang, H. (2004). Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0909104-002152
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Hao-lun. “Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes.” 2004. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0909104-002152.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Hao-lun. “Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes.” 2004. Web. 10 Apr 2021.
Vancouver:
Huang H. Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes. [Internet] [Thesis]. NSYSU; 2004. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0909104-002152.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang H. Performance Study on the treatment of VOC Containg Gases from Paint Blending Processes. [Thesis]. NSYSU; 2004. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0909104-002152
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Dalhousie University
8.
Bridson-Pateman, Evan.
Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate.
Degree: Master of Applied Science, Department of Environmental Engineering, 2013, Dalhousie University
URL: http://hdl.handle.net/10222/35419
► In this thesis, a semi-permeable lining system was proposed to upgrade arctic wastewater stabilization ponds, acting as a biofilter. Although commonplace at lower latitudes, the…
(more)
▼ In this thesis, a semi-permeable lining system was
proposed to upgrade arctic wastewater stabilization ponds, acting
as a
biofilter. Although commonplace at lower latitudes, the
effects of cold temperatures and short-duration summers on
biofilter performance are inadequately studied. The goal of this
research was to study the hydraulic and treatment performance of
geotextile substrate biofilters under arctic conditions. Filtration
experiments were conducted in a laboratory environment. Municipal
wastewater was passed through columns containing nonwoven
geotextiles over 10 cm of gravel. Three experimental trails were
conducted at either 10? or 2?, each lasting 12 weeks. Weekly
samples taken before and after filtration were analyzed for various
water quality parameters. Hydraulic conductivity was monitored
using weekly constant head permeameter tests. Results showed that
biomat accumulation is possible on geotextile material over 12 week
period. Significant removal of TSS and BOD5 was observed, along
with a 1-log reduction in hydraulic conductivity.
Advisors/Committee Members: Dr. Jamie Van Gulk (external-examiner), Dr. Lei Liu (graduate-coordinator), Dr. Graham Gagnon (thesis-reader), Dr. Rob Jamieson, Dr. Craig Lake (thesis-supervisor), Not Applicable (ethics-approval), Not Applicable (manuscripts), Not Applicable (copyright-release).
Subjects/Keywords: Arctic; Geosynthetics; Geotextile; Wastewater Treatment; Biomat; Biofilter
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APA (6th Edition):
Bridson-Pateman, E. (2013). Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/35419
Chicago Manual of Style (16th Edition):
Bridson-Pateman, Evan. “Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate.” 2013. Masters Thesis, Dalhousie University. Accessed April 10, 2021.
http://hdl.handle.net/10222/35419.
MLA Handbook (7th Edition):
Bridson-Pateman, Evan. “Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate.” 2013. Web. 10 Apr 2021.
Vancouver:
Bridson-Pateman E. Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate. [Internet] [Masters thesis]. Dalhousie University; 2013. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10222/35419.
Council of Science Editors:
Bridson-Pateman E. Biofilm-Enhanced Treatment for Arctic Wastewater
Stabilization Ponds Using Geotextile Substrate. [Masters Thesis]. Dalhousie University; 2013. Available from: http://hdl.handle.net/10222/35419
University of Waterloo
9.
Choudhury, Tahina.
Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff.
Degree: 2017, University of Waterloo
URL: http://hdl.handle.net/10012/12056
► Woodchip filters have received attention in recent years for their ability to sustain denitrification activity across multiyear time frames. However, in most freshwater aquatic ecosystems,…
(more)
▼ Woodchip filters have received attention in recent years for their ability to sustain denitrification activity across multiyear time frames. However, in most freshwater aquatic ecosystems, phosphorus (P) rather than nitrogen (N) is the nutrient considered most responsible for eutrophication. Previous studies have indicated that woodchip filters have limited ability to remove dissolved P, but P export in agricultural runoff is often dominated by particulate P (PP). Woodchip media, because of its high porosity, permeability, surface roughness and plate-like structure of the particles, could be effective for physical filtration of particulate phosphorus. In this study, woodchip filter systems were tested for treatment of PP in agriculturally impacted surface waters at five sites in southern Ontario.
A woodchip filter system installed near Bradford, ON was used to treat highly turbid root vegetable wash water from a local farm and focused on the treatment of total suspended solids (TSS) and PP. The full-scale treatment system consisted of a sedimentation tank (12.3 m3) followed by the woodchip filter (16.1 m3) and had two stages of testing. In the initial stage, the filter media consisted of woodchips with a layer of sawdust, and in the second stage, the media contained woodchips only. The full-sale treatment system was sampled from November 2014 to March 2016 and proved effective for TSS and PP removal during both treatment stages, averaging overall removal of 99% and 91%, respectively, in the first stage, and 96% and 77%, respectively, in the second stage. During the operation of the full-scale treatment system, the sludge within the sedimentation tank was regularly monitored and was removed on two occasions. Also during this time, sludge accumulation within the top layer of woodchips required replacement of the top layer on one occasion, September 2015.
A woodchip filter was installed near Barrie, ON to treat particulate P in an agricultural drainage ditch adjacent to fields where row crops are grown. In this case the filter consisted of 20 m3 of woodchips trenched in to the bottom of the stream (stream-bed filter). Stream flow was induced through the filter by placement of a gravel riffle at its downstream end. This filter was monitored from December 2014 to March 2016 and proved effective for P removal in the stream water, which had low to moderate turbidity, averaging total P removal of 58%, the majority of which was PP. Nitrate removal in the filter was modest, averaging only 1 mg/L NO3 – N, because the filter was operated at relatively high flow rates (average hydraulic retention time of 0.4 days) such that denitrification activity was incomplete.
A woodchip filter was installed near Keswick, ON to remove TSS and associated PP, as well as NO3 – N, from a tile drain at a sod farm. The filter consisted of 36 m3 of woodchips trenched into the subsurface near the drain outlet and was monitored intermittently from May 2014 to March 2016. Overall, geochemical parameters were not substantially changed…
Subjects/Keywords: Biofilter; Agriculture; Water Treatment; Phosphorus Treatment
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APA (6th Edition):
Choudhury, T. (2017). Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12056
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Choudhury, Tahina. “Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff.” 2017. Thesis, University of Waterloo. Accessed April 10, 2021.
http://hdl.handle.net/10012/12056.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Choudhury, Tahina. “Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff.” 2017. Web. 10 Apr 2021.
Vancouver:
Choudhury T. Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10012/12056.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Choudhury T. Woodchip Biofilters for Treatment of Particulate Phosphorus in Agricultural Runoff. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/12056
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of New South Wales
10.
Limbri, Hendy.
Removal of methane from coal mine ventilation air by biofiltration.
Degree: Chemical Sciences & Engineering, 2014, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/54044
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12760/SOURCE02?view=true
► Methane emitted by coal mine ventilation air (MVA) is a significant greenhouse gas. A mitigation strategy is the oxidation of methane to carbon dioxide, which…
(more)
▼ Methane emitted by coal mine ventilation air (MVA) is a significant greenhouse gas. A mitigation strategy is the oxidation of methane to carbon dioxide, which is approximately twenty-one times less effective at global warming than methane on a mass-basis. The low non-combustible methane concentrations at high MVA flow rates call for a catalytic strategy of oxidation. A biofiltration technology was proposed as a promising solution to reduce/eliminate methane emissions from coal MVA. Unlike conventional CH4 removal technology, biofiltration is relatively cheap to build and operate as it works at ambient temperature and pressure. The challenge in developing
biofilter system for MVA remains as high gas flow rate (> 50 m3 s-1) coupled with low methane concentrations (⤠1% (v/v) in air) require an improved
biofilter performance to be applied for MVA applications. Several steps have been taken in this project including identification and isolation of methanotrophs (methane-oxidising microorganisms) from coal mine site which might be able to adapt better to MVA environments, investigation to seek optimum methane oxidation activity and microbial growth using pure culture of Methylosinus sporium (M. sporium) by batch experiments, and a lab-scale biofiltration study using inoculated (with M. sporium) and non-inoculated coal as packing material in a simulated MVA conditions. A laboratory-scale coal-packed
biofilter was designed and partially removed methane from humidified air at flow rates between 0.2 and 2.4 L min-1. From the
biofilter operation, the most abundant member of methane-oxidising microorganisms had been identified by 16S rRNA gene sequence as belonging to the methanotrophic genus Methylocystis. The greatest level of methane removal of 27.2 ± 0.66 gmethane m-3 empty bed h-1 was attained for the non-inoculated system, which was equivalent to removing 19.7 ± 2.9 % methane from an inlet concentration of 1% (v/v) at an inlet gas flow rate of 1.6 L min-1(2.4 min empty bed residence time). These results show that low-cost coal packing
biofilter holds promising potential as a methane removal technology in MVA.
Advisors/Committee Members: Scott, Jason, Chemical Sciences & Engineering, Faculty of Engineering, UNSW, Rosche, Bettina, Biotechnology & Biomolecular Sciences, Faculty of Science, UNSW, Gunawan, Cindy, Chemical Sciences & Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Coal Mine Ventilation Air; Biofilter; Methane
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APA (6th Edition):
Limbri, H. (2014). Removal of methane from coal mine ventilation air by biofiltration. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54044 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12760/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Limbri, Hendy. “Removal of methane from coal mine ventilation air by biofiltration.” 2014. Masters Thesis, University of New South Wales. Accessed April 10, 2021.
http://handle.unsw.edu.au/1959.4/54044 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12760/SOURCE02?view=true.
MLA Handbook (7th Edition):
Limbri, Hendy. “Removal of methane from coal mine ventilation air by biofiltration.” 2014. Web. 10 Apr 2021.
Vancouver:
Limbri H. Removal of methane from coal mine ventilation air by biofiltration. [Internet] [Masters thesis]. University of New South Wales; 2014. [cited 2021 Apr 10].
Available from: http://handle.unsw.edu.au/1959.4/54044 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12760/SOURCE02?view=true.
Council of Science Editors:
Limbri H. Removal of methane from coal mine ventilation air by biofiltration. [Masters Thesis]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54044 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12760/SOURCE02?view=true
University of Canterbury
11.
Evelyn.
Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system.
Degree: M. Eng., Chemical Engineering, 2013, University of Canterbury
URL: http://dx.doi.org/10.26021/3018
► Microbial fuel cells (MFCs) are emerging energy production technology which converts the chemical energy stored in biologically degradable compounds to electricity at high efficiencies. Microbial…
(more)
▼ Microbial fuel cells (MFCs) are emerging energy production technology which converts the chemical energy stored in biologically degradable compounds to electricity at high
efficiencies. Microbial fuel cells have some advantages such as use of an inexpensive catalyst, operate under mild reaction conditions (i.e. ambient temperature, normal pressure
and neutral pH), and generate power from a wide range and cheap raw materials. These make microbial fuel cell as an attractive alternative over other electricity generating
devices. However, so far the major problem posses by this technology is the low power outputs of the microbial fuel cells that hinder its commercialization. Restriction in the
electron transfer from bacteria to the anode electrode of a MFC is thought to be one cause for the low power output.
Most recent MFC research is focused on using contaminants present in industrial, agricultural, and municipal wastewater as the energy source, with very few studies utilising gaseous substrates. Mediators can be added to MFCs to enhance the electron transfer from the microbe to the anode, but have limited practical applicability in wastewater applications because of the difficulty in recovering the expensive and potentially toxic compound. This thesis describes an investigation of electricity generation in a microbial fuel cell by combining a gaseous substrate with a mediator in the anode compartment. The emphasis being placed on the selection of a mediator to improve the electron transfer process for electricity production in an MFC. Subsequently, methods to improve the performance of a mediator MFC in respect of power and current density were discussed. This type of MFC is purposely aimed to be applied for treating gaseous contaminants in an anaerobic biofilter while simultaneously produce electricity.
In this study, ethanol was the first gaseous substrate tested for the possibility to generate electricity in the MFC. Various mediators were previously compared in their reversibility
of redox reactions and in the current production, and three best mediators were then
selected for the power production. The highest electrical current production i.e. 12 μA/cm2 was obtained and sustained for 24 hrs with N,N,N',N'-tetramethyl-1,4-
phenylendiamine TMPD (N-TMPD) as the mediator using glassy carbon (GC) electrode. The maximum power density reached 0.16 mW/cm2 by using carbon cloth (CC) anode.
The absorption of these mediators by the bacterial cells was shown to correlate with the obtained energy production, with no N-TMPD was absorbed by the bacterial cells. The 24 hr current production was shown to be accompanied by the decrease in the ethanol concentration (i.e. 1.82 g/L), however ethanol crossover through the proton exchange
membrane and ethanol evaporation around the electrodes were most likely to be the major cause of…
Subjects/Keywords: Gaseous substrate; mediator; microbial fuel cell; biofilter
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APA (6th Edition):
Evelyn. (2013). Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/3018
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
Evelyn. “Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system.” 2013. Masters Thesis, University of Canterbury. Accessed April 10, 2021.
http://dx.doi.org/10.26021/3018.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
Evelyn. “Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system.” 2013. Web. 10 Apr 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
Evelyn. Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system. [Internet] [Masters thesis]. University of Canterbury; 2013. [cited 2021 Apr 10].
Available from: http://dx.doi.org/10.26021/3018.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
Evelyn. Mediator combined gaseous substrate for electricity generation in microbial fuel cells (MFCs) and potential integration of a MFC into an anaerobic biofiltration system. [Masters Thesis]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/3018
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
12.
Eklund, Sara.
An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden.
Degree: Environmental and Natural Resources Engineering, 2020, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78146
► Urban runoff may be contaminated with, for example, metals, nutrients and sediment. Generally, such runoff enters waterways and oceans without any type of treatment.…
(more)
▼ Urban runoff may be contaminated with, for example, metals, nutrients and sediment. Generally, such runoff enters waterways and oceans without any type of treatment. Bioretention systems can be used to protect the aquatic environment since one of their main objectives is to remove pollutants from stormwater. This study presents data on one of Sweden´s first biofilters, constructed 10 years ago in the municipality of Tyresö. The main aim of this thesis is to evaluate the treatment performance of an operational biofilter through a comparison of inlet and outlet stormwater quality. The objectives include: Determine the concentrations of selected heavy metals and nutrients in stormwater at the inlet and outlet of the biofilterIdentify if, and if so how, heavy metal concentrations and nutrient concentrations change after treatmentAssess the condition of the biofilter in relation to particle size distribution and constitution of the filter media compared to data generated in an earlier study Ten sampling campaigns were conducted in 2015 involving the collection of stormwater at the inlet and outlet. Rainfall data was also collected for each event. Samples were analysed for selected metals (lead, cadmium, copper, zinc, nickel and chromium) and nutrients (nitrogen and phosphorous). At the end of the sampling campaign, samples of the biofilter’s filter media were analysed for particle size distribution. Data from a previous study conducted in 2013 was also used in this thesis to provide a baseline data set for comparison. The event mean concentrations of most monitored substances were lower in the outflow than inflow, except for chromium which typically showed an increase. Calculated removal efficiencies show considerable variation, with low removal efficiencies in comparison to previous studies reported in the literature. The low removal performance may be explained by the relatively low pollutant concentrations in both inflowing and outflowing stormwater. If the inflow concentrations are close to the “irreducible concentrations” (Cirr) of a stormwater facility, no further reductions are likely. There could even be negative removal as even small variations in concentration can generate (translate into) substantial negative increases. Comparison of the current data set with the results of the study conducted in 2013 indicate that the treatment performance of the biofilter has not changed suggesting that, despite the colder climate, biofilters can continue to remove pollutants from stormwater after a ten year period of operation. Analyses showed that the filter media has the same particle size distribution as when the biofilter was constructed. Deeper samples of the filter media have lower metal concentrations than those reported in samples collected at the surface of the biofilter.
Urbant dagvatten kan innehålla olika föroreningar, till exempel metaller, sediment och näringsämnen. Vanligtvis når dagvattnet vattenvägar och hav utan någon rening alls.…
Subjects/Keywords: Biofilter; Water Quality; heavy Metals; Nutrients; Stormwater Treatment; Sweden; Tyresö; Biofilter; Vattenkvalitet; Tungmetaller; Näringsämnen; Dagvattenrening; Sverige; Tyresö; Environmental Engineering; Naturresursteknik
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APA (6th Edition):
Eklund, S. (2020). An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78146
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Eklund, Sara. “An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden.” 2020. Thesis, Luleå University of Technology. Accessed April 10, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78146.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Eklund, Sara. “An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden.” 2020. Web. 10 Apr 2021.
Vancouver:
Eklund S. An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden. [Internet] [Thesis]. Luleå University of Technology; 2020. [cited 2021 Apr 10].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78146.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Eklund S. An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden. [Thesis]. Luleå University of Technology; 2020. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78146
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
13.
Hsiao, Cheng-chi.
A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration.
Degree: Master, Marine Environment and Engineering, 2009, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0903109-171813
► The crisis of the water resources become a serious problem in recent years. Besides the global warming the problem mostly comes from quick population growth,…
(more)
▼ The crisis of the water resources become a serious problem in recent years. Besides the global warming the problem mostly comes from quick population growth, intense industrial developments and low efficiency agricultural implementations. Biofilters are widely been used to either reduce pollution loads or also as a water conservation tool. And the vertical-flow biofilters act as a kind of bio-filter has gain the advantages of low maintenance, small footprint, greater capacities on both the hydraulic and organic loadings. It often used in to treat aquaculture wastewater for recycling during the filter stage.
This study is, therefore, focusing on the bio-treatment processes to recycle the wastewater discharged from Chlorella production. Preserving water resources is one big issue of this study, Reuse the nutrients is another tough objective. For reusing the water with as much nutrients as possible and get the organic content off the water is the major target of the study.
This study has been separated in two stages. A preliminary study has first been carried out in order to understand the Chlorella behaviors in more detail. Second phase includes the treatment tests with conventional activated sludge (AS) method and the bio-filters.
The results have shown that ammonia is preferred by Chlorella as the nitrogen source. Light plays an important role on the treatment for removing algae activities. Aerobic digestion has shown better efficiency. AS can accept as high as 20% of daily input to the system volume, the system is not capable to bear more. While the biofilters, using either zeolite and LECA as the media, have shown satisfied results. When the hydraulic loading stay between 0.30 ~ 2.09 m3 m-2 day-1 to the system, the SS, COD, Chl-a removal rates can reach 90%, and more than 96% of total inorganic nitrogen (TIN) and 76% phosphorus can be preserved in the recycled water, respectively.
Advisors/Committee Members: Jimmy, C. M. Kao (chair), jason, C. S. Yu (committee member), Lei, L. Yang (chair).
Subjects/Keywords: Nutrient; Zeolite; LECA; Vertical-flow biofilter; Aquaculture wastewater
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APA (6th Edition):
Hsiao, C. (2009). A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0903109-171813
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hsiao, Cheng-chi. “A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration.” 2009. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0903109-171813.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hsiao, Cheng-chi. “A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration.” 2009. Web. 10 Apr 2021.
Vancouver:
Hsiao C. A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0903109-171813.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hsiao C. A research on the treatment and recycling of the wastewater from Chlorella production using biofiltration. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0903109-171813
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
14.
Kao, Wei-Teng.
Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant.
Degree: Master, Environmental Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723114-081637
► This study aimed at investigating the feasibility of biotrickling filtration for eliminating VOCs (volatile organic compounds) from a stream of waste gas vented from houses…
(more)
▼ This study aimed at investigating the feasibility of biotrickling filtration for eliminating VOCs (volatile organic compounds) from a stream of waste gas vented from houses for painting plastic car parts. Toluene, xylenes and isopropanol are among the main constituents of the VOCs in the vented gas. A pilot-scale biotrickling
biofilter packed with plastic chips was built for the performance test to get engineering data for designing a full-scale facility for treating the gas stream with a flow of 720 Am3/min at 25 °C.
The pilot biotrickling
biofilter (0.4 m(L)Ã0.4 m(W)Ã0.78 m(H)) was made of transparent acrylic sheets. There are six sections each packed with plastic chips of 0.4 m(L)Ã0.4 m(W)Ã0.05 m(H) in dimension and the total packing volume was 48 L. The chips are trimmed wastes for manufacturing thermal-rigid door plates in a plant located at Chia-Yi County in middle-southern Taiwan. The packed space has a space gas-solid interfacial area (the specific area) of 600 m2/m3 and a dry packing weight of 100 kg/m3. A waste gas stream with a flow rate ranging from 0.33-0.88 Nm3/min was drawn from the scrubber out of the painting houses and introduced into the filter bottom. Circulation water with added nutrients (urea, phosphoric acid, milk powder and fractose) was sprayed to the pacing surface for moistening and supplying nutrients to the microorganisms attached to the chip surfaces.
The test period was 191 days, lasting from Dec. 27, 2013 to July 10, 2014. Results indicate that with an empty bed retention time (EBRT) of 4.74 s for the test gas flowing through the beds, 87-95% of 20 ppm of the THC (total hydrocarbon, expressed as methane equivalent) in the influent test gas could be removed. With an EBRT of 11.6 s, 81% of 400 ppm THC could be removed.
A full-scale
biofilter was scheduled for treating a total gas flow of 720 Am3/min at 25 °C. Volumetric nutrient supplementation rates of milk powder 0.040 kg/m3.d, fractose 0.060 L/m3.d, urea 0.108 kg/m3.d and 85% phosphoric acid 0.0373 kg/m3.d were set. With volumetric loadings (L) of 0.86-265 g CH4/m3.h, a THC removal of 75% was expected with an EBRT of greater than 11.6 s.
Advisors/Committee Members: Meu-Jiuan Sheu (chair), Ming-Shean Chou (committee member), Wen-Hsi Cheng (chair).
Subjects/Keywords: volatile organic compounds; biofilter; xylenes; toluene; painting operations
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APA (6th Edition):
Kao, W. (2014). Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723114-081637
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kao, Wei-Teng. “Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant.” 2014. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723114-081637.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kao, Wei-Teng. “Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant.” 2014. Web. 10 Apr 2021.
Vancouver:
Kao W. Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723114-081637.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kao W. Treatment of volatile organic compounds (VOCs) vented from surface-coating operations in a full-scale plant. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723114-081637
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
15.
Su, I-chen.
Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter.
Degree: Master, Environmental Engineering, 2016, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0607116-154310
► Some synthetic resin production processes use acetone and water to make emulsified resins. During the emulsification process, gas collection and end-of-pipe treatment equipments should be…
(more)
▼ Some synthetic resin production processes use acetone and water to make emulsified resins. During the emulsification process, gas collection and end-of-pipe treatment equipments should be provided to reduce some vaporized acetone which would emit to the atmospheric environment. In this study, a pilot-scale and a field-scale biotrickling filters were set to test their performances on the removal of air-borne acetone. Data from the pilot-scale filter would be helpful to the operations of the field one.
The pilot filter was constructed of a PP (polypropylene) column (0.30 m inner diameter and 2.1 m high) with the inner space packed with 2.0" crown-type biospheres to a total packing volume of 0.70 m3. The full-scale (field) filter was constructed of stainless steel and has a dimension of 4.5 m(W)Ã4.5 m(L)Ã5.5 m(H) packed with 2.0" crown-type biospheres to a total packing volume of around 50 m3.
In the test period of 122 days for the pilot filter, an empty bed residence time (EBRT) of the influent gas through the packed section was controlled at 21, 14, and 8.4 s, respectively. Nutrients were added to the circulation water according to the ratios of COD (influent acetone equivalent):N:P = 150:5:1 (in addition to supplements of fructose and milk), 2500:5:1 (in addition to a supplement of milk), and 2500:5:1 (without any additional supplement), respectively, for nutrition tests. In the test period of 300 days for the field filter, EBRTs were in the range of 5.62-20 s and nutrients were added to the circulation water according to the ratio of COD:N:P = 1250:5:1, 2500:5:1, 3300:5:1, and 12,500:5:1, respectively, for nutrition tests, in addition to fructose and/or milk.
Results indicate that on an average, by the pilot filter, with influent acetone concentrations of 4.4-1143 mg/m3, 84.1% of the influent acetone could be removed; and by the field one, 86.0% of the influent acetone of 1.76-6596 mg/m3 was removed.
Results also display that the acetone removal increased with increasing EBRT for both filters. Maximum removal of 91.7 and 96.9% was observed at EBRT of 21.0 and 19.8 s, respectively, for the pilot and the field filter. With volumetric acetone loadings of L < 260 g/m3.h, 91.2% of the influent acetone could be removed, for the pilot and the field filter. With L = 137 g/m3.h, 94.7% of the influent acetone was removed, for the pilot and the field filter.
An economic analysis indicates that it costs 5.83 NTD for treating 1000 m3 of the acetone-containing air by the pilot filter. It is proposed that the field filter be operated at an EBRT of 14 s and nutrition rate of COD:N:P = 2500:5:1 without additional fructose and milk supplementation.
Advisors/Committee Members: Rui-Ren Chen (chair), Ming-Shian Chou (committee member), Jyun-Hong Lin (chair).
Subjects/Keywords: synthetic resin; Volatile Organic Compounds(VOCs); biofilter; acetone; biotrickling filter
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APA (6th Edition):
Su, I. (2016). Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0607116-154310
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Su, I-chen. “Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter.” 2016. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0607116-154310.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Su, I-chen. “Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter.” 2016. Web. 10 Apr 2021.
Vancouver:
Su I. Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0607116-154310.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Su I. Study on the treatment of air-borne acetone by a full-scale and a pilot biotrickling filter. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0607116-154310
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Douglas Guedes Batista Torres.
Medium support in anaerobic treatment of cassava wastewater.
Degree: 2009, Universidade Estadual do Oeste do Parana
URL: http://tede.unioeste.br/tede//tde_busca/arquivo.php?codArquivo=445
► Devido Ãs altas cargas orgÃnicas presentes na manipueira, resÃduo lÃquido proveniente do processamento da mandioca, sÃrios danos ao meio ambiente podem ser ocasionados caso o…
(more)
▼ Devido Ãs altas cargas orgÃnicas presentes na manipueira, resÃduo lÃquido proveniente do processamento da mandioca, sÃrios danos ao meio ambiente podem ser ocasionados caso o efluente nÃo seja submetido a tratamento adequado para reduÃÃo da carga orgÃnica. Tradicionalmente, sÃo utilizados reatores com separaÃÃo de fases devido à possibilidade de acidificaÃÃo do reator na fase acidogÃnica o que pode prejudicar o processo metanogÃnico da reaÃÃo anaerÃbia. Desta forma o presente trabalho teve como objetivo avaliar o desempenho da utilizaÃÃo de um sistema sem separaÃÃo de fases composto por reatores anaerÃbios com meio suporte no tratamento anaerÃbio da manipueira. O experimento foi realizado no LaboratÃrio de Saneamento da Universidade Estadual do Oeste do ParanÃ, UNIOESTE, campus de Cascavel. A Ãgua residuÃria utilizada foi proveniente de indÃstria de processamento de mandioca para produÃÃo de fÃcula, localizada no municÃpio de Toledo (PR). Os reatores utilizados foram construÃdos em tubos de PVC com diÃmetro de 15 cm e comprimento de 90 cm, resultando em relaÃÃo entre o comprimento e a largura de 1:6. Foram avaliados dois meios suporte, sendo utilizado no primeiro reator 52 anÃis de bambu com 10 cm de comprimento mÃdio e no segundo reator 325 anÃis de PVC com aproximadamente 4 cm de comprimento mÃdio, apresentando os reatores volume Ãtil de 6,00 e 7,98 L, respectivamente. Para realizar a mensuraÃÃo da quantidade de biogÃs gerado, cada reator foi conectado a um gasÃmetro preenchido parcialmente com uma soluÃÃo de 3% de H2SO4 e 25% de NaCl. A partir da avaliaÃÃo das cargas orgÃnicas de 0,55, 1,16, 1,47 e 3,05 g.L-1d-1, foram obtidas remoÃÃes de DQO, SÃlidos Totais e VolÃteis superiores a 97,7, 79,1 e 89,6% respectivamente, sendo observada diferenÃa entre os meios suporte para as remoÃÃes de DQO e SÃlidos Totais, resultando em maiores remoÃÃes no reator com bambu. Foram obtidas produÃÃes de biogÃs variando entre 0,662 e 0,985 LbiogÃs.gDQOconsumda -1 para a utilizaÃÃo dos anÃis de bambu, sendo estes valores superiores Ãs produÃÃes obtidas para a utilizaÃÃo de PVC, o qual resultou em valores entre 0,527 e 0,721 LbiogÃs.gDQOconsumida -1. A elevaÃÃo da carga orgÃnica resultou ainda em elevaÃÃo da produÃÃo de biogÃs, sendo obtida a maior produÃÃo para as cargas de 3,05 e 1,47 g.L-1d- 1 na utilizaÃÃo do bambu e PVC, respectivamente. Desta forma verificamos uma maior estabilidade na utilizaÃÃo de bambu como meio suporte, o qual apresentou as maiores remoÃÃes de carga e de produÃÃo de biogÃs, sendo observada a mÃxima produÃÃo na carga de 3,05 g.L-1d-1.
Due to high organic charges extant in cassava wastewater, liquid waste originated from cassava processing, serious environment damages may be occasioned if the effluent is not subjected to appropriate treatment for organic charge reduction. Traditionally two-phase reactors are used due to the possibility of the reactor acidification in the acidogenic phase which can damage the metanogenic process of the anaerobic reaction. In this way the present work had as objective the…
Advisors/Committee Members: Marcio Antonio Vilas Boas, Ajadir Fazolo, Simone Damasceno Gomes.
Subjects/Keywords: Biofiltro; biofilter; ENGENHARIA AGRICOLA; Bambu; bamboo; anaerobic digestion; DigestÃo anaerÃbia
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APA ·
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APA (6th Edition):
Torres, D. G. B. (2009). Medium support in anaerobic treatment of cassava wastewater. (Thesis). Universidade Estadual do Oeste do Parana. Retrieved from http://tede.unioeste.br/tede//tde_busca/arquivo.php?codArquivo=445
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Torres, Douglas Guedes Batista. “Medium support in anaerobic treatment of cassava wastewater.” 2009. Thesis, Universidade Estadual do Oeste do Parana. Accessed April 10, 2021.
http://tede.unioeste.br/tede//tde_busca/arquivo.php?codArquivo=445.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Torres, Douglas Guedes Batista. “Medium support in anaerobic treatment of cassava wastewater.” 2009. Web. 10 Apr 2021.
Vancouver:
Torres DGB. Medium support in anaerobic treatment of cassava wastewater. [Internet] [Thesis]. Universidade Estadual do Oeste do Parana; 2009. [cited 2021 Apr 10].
Available from: http://tede.unioeste.br/tede//tde_busca/arquivo.php?codArquivo=445.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Torres DGB. Medium support in anaerobic treatment of cassava wastewater. [Thesis]. Universidade Estadual do Oeste do Parana; 2009. Available from: http://tede.unioeste.br/tede//tde_busca/arquivo.php?codArquivo=445
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Canterbury
17.
Dang, Quang Anh.
The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.
Degree: PhD, Chemical Engineering, 2019, University of Canterbury
URL: http://hdl.handle.net/10092/100023
► This study quantitatively determined the importance and potential interaction between operating conditions – combination of residual pollutant concentration and water potential and soil type on…
(more)
▼ This study quantitatively determined the importance and potential interaction between operating conditions – combination of residual pollutant concentration and water potential and soil type on %CO2 recovery and biofilter performance (elimination capacity - EC). A 2 x 3 factorial design was adopted, which included two levels of operating conditions: (1) low residual pollutant concentrations and wetter conditions and (2) high residual pollutant concentrations; and drier conditions. This experimental design was done for three types of soil (Soil 1, Soil 2, Soil 3).
A continuous lab-scale differential biofilter was used as a research tool to control the environmental conditions. The biofilter was operated without supplemental nutrient addition to remove a variety of pollutants (toluene and methane) in an air stream. The carbon flux was rigorously tracked through the biofiltration system. Over the range of operation, the carbon balance closure for 37 experiments was 96.1 ± 5.3%. The carbon fraction found in the liquid phase was less than 5% of the degraded carbon. Majority of the biodegraded carbon (> 90%) ends up in the form of either CO2 or active biomass/EPS.
In general, operating the toluene biofilters at low residual concentrations (5 ppm to 49 ppm) and wetter condition (-10 cmH₂O) resulted in a 20% higher EC and a 20% higher CO₂ than operating at high residual concentrations (115 ppm to 146 ppm) and drier condition (-100 cmH₂O). Conversely, operating the methane biofilters at low residual concentrations (1709 ppm to 1942 ppm) and wetter condition (-10 cmH₂O) resulted in a 35% lower EC and a 45% higher CO₂ than operating at high residual concentrations (8590 ppm to 9054 ppm) and drier condition (-100 cmH2O).
Soil type had a strong effect on the EC and %CO₂ recovery in methane biofilters and on the EC in toluene biofilters. Among three soil types, Soil 2 had the lowest EC. The interaction between soil type and operating condition was not significant. Preliminary microbial analysis suggested the differences in the community structure was mainly attributed to the soil type rather than the operating conditions, type of substrate during acclimation.
A feedback control system was developed to maintain the residual toluene to the desired value. The impact of residual toluene concentration on biofilter performance packed with Soil 2 was investigated. Substrate inhibition occurred when the residual toluene concentration exceeded 250 ppm. Start-up concentration studies showed that starting the reactor at a lower residual concentration (20 ppm) then increasing it to higher value (65 ppm) increased the EC by 22% compared to starting the reactor at a high residual concentration (65 ppm).
Subjects/Keywords: Soil biofilter; toluene; methane; carbon balance; feedback control system
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APA (6th Edition):
Dang, Q. A. (2019). The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. (Doctoral Dissertation). University of Canterbury. Retrieved from http://hdl.handle.net/10092/100023
Chicago Manual of Style (16th Edition):
Dang, Quang Anh. “The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.” 2019. Doctoral Dissertation, University of Canterbury. Accessed April 10, 2021.
http://hdl.handle.net/10092/100023.
MLA Handbook (7th Edition):
Dang, Quang Anh. “The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.” 2019. Web. 10 Apr 2021.
Vancouver:
Dang QA. The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. [Internet] [Doctoral dissertation]. University of Canterbury; 2019. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10092/100023.
Council of Science Editors:
Dang QA. The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. [Doctoral Dissertation]. University of Canterbury; 2019. Available from: http://hdl.handle.net/10092/100023
NSYSU
18.
Chang, Chun-cheng.
A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System.
Degree: Master, Marine Environment and Engineering, 2017, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1128117-090733
► The study mainly concentrates on dealing with fish farming wastewater through biofilter system and discusses the transformation when nutrients pass the biofilter system. Meanwhile, the…
(more)
▼ The study mainly concentrates on dealing with fish farming wastewater through
biofilter system and discusses the transformation when nutrients pass the
biofilter system. Meanwhile, the interaction was analyzed and the variation of factors were observed during experiments. The study discovers the time interval of hydraulic retension time influences
biofilter system result a lot. Hence, the tests was designed based on the time interval of hydraulic retension time and observe general results for finding which meets operation setting of the practical demand. Furthermore, the results are collected and summarized to calculate the scales and costs of
biofilter system when used in practical application, and also be the references of research and practical use afterwards.
In the study it discovers the total of nitrogen keep raising if the feed is put into water,and also discovers it will exists as organic substance, which means algae, after degradation and absorption. The experiment results show the proportion of organic nitrogen to inorganic nitrogen is four to one. The
biofilter system designed in the study discovers denitration still happens under high-dissolving oxygen condition and determines the elimination of nitrate effectively. After calculation implemented in this study, 35.5 % of the total nitrogen amount were removed from the water system if the time interval was under 8 hours. Without changing the water,
biofilter system can treat 20 % of the general water volume per day, and itâs volume covers 5 % of total water amount.
Advisors/Committee Members: Jason C.S. Yu (committee member), Jason C.S. Yu (chair), HSUEH, MEI LI (chair), Li-Lian Liu (chair).
Subjects/Keywords: Volatilization; Nitrogen load; Nenitration; Biofilter system; Nutrient; Aquaculture water quality
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APA (6th Edition):
Chang, C. (2017). A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1128117-090733
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chang, Chun-cheng. “A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System.” 2017. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1128117-090733.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chang, Chun-cheng. “A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System.” 2017. Web. 10 Apr 2021.
Vancouver:
Chang C. A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1128117-090733.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chang C. A Study of Water Quality Improvement in Seawater Aquaculture Using A Biofilter System. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1128117-090733
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Colorado
19.
Travis, Elizabeth A.
Pyrolysis of Human Feces: Odor and Odor Treatment Options.
Degree: MS, 2014, University of Colorado
URL: https://scholar.colorado.edu/cven_gradetds/121
► In response to the Reinvent the Toilet Challenge, the University of Colorado, Boulder developed the Sol-Char toilet. It pyrolyzes human feces, rendering it safe and…
(more)
▼ In response to the Reinvent the Toilet Challenge, the University of Colorado, Boulder developed the Sol-Char toilet. It pyrolyzes human feces, rendering it safe and transforming it into a usable char. The release of large amounts of volatile sulfur compounds and odor represents a challenge associated with toilet operation. In tests, the pyrolysis of 160-900 grams of feces released hydrogen sulfide peaks between 25 and 90 ppm and had an odor detection threshold of 510,000 OU/ft3. Feces-derived chars for the treatment of hydrogen sulfide were explored using static breakthrough experiments, with 900°C char having the highest breakthrough capacity. Preliminary tests using a pilot scale soil
biofilter indicate it represents a potential treatment for odor f fecal pyrolysis exhaust.
Advisors/Committee Members: Karl G. Linden, JoAnn Silverstein, Lupita Montoya.
Subjects/Keywords: adsorption; char; hydrogen sulfide; odor; sanitation; soil biofilter; Environmental Engineering
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APA (6th Edition):
Travis, E. A. (2014). Pyrolysis of Human Feces: Odor and Odor Treatment Options. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/121
Chicago Manual of Style (16th Edition):
Travis, Elizabeth A. “Pyrolysis of Human Feces: Odor and Odor Treatment Options.” 2014. Masters Thesis, University of Colorado. Accessed April 10, 2021.
https://scholar.colorado.edu/cven_gradetds/121.
MLA Handbook (7th Edition):
Travis, Elizabeth A. “Pyrolysis of Human Feces: Odor and Odor Treatment Options.” 2014. Web. 10 Apr 2021.
Vancouver:
Travis EA. Pyrolysis of Human Feces: Odor and Odor Treatment Options. [Internet] [Masters thesis]. University of Colorado; 2014. [cited 2021 Apr 10].
Available from: https://scholar.colorado.edu/cven_gradetds/121.
Council of Science Editors:
Travis EA. Pyrolysis of Human Feces: Odor and Odor Treatment Options. [Masters Thesis]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/cven_gradetds/121
Luleå University of Technology
20.
Hamberg, Roger.
Luktreduktion i biofilter Fågelmyrens deponi Borlänge.
Degree: 2007, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-43258
Validerat; 20101217 (root)
Subjects/Keywords: Technology; Teknik; Lukt; biofilter
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APA (6th Edition):
Hamberg, R. (2007). Luktreduktion i biofilter Fågelmyrens deponi Borlänge. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-43258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hamberg, Roger. “Luktreduktion i biofilter Fågelmyrens deponi Borlänge.” 2007. Thesis, Luleå University of Technology. Accessed April 10, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-43258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hamberg, Roger. “Luktreduktion i biofilter Fågelmyrens deponi Borlänge.” 2007. Web. 10 Apr 2021.
Vancouver:
Hamberg R. Luktreduktion i biofilter Fågelmyrens deponi Borlänge. [Internet] [Thesis]. Luleå University of Technology; 2007. [cited 2021 Apr 10].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-43258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hamberg R. Luktreduktion i biofilter Fågelmyrens deponi Borlänge. [Thesis]. Luleå University of Technology; 2007. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-43258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Hiller, Malin.
Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle.
Degree: Mathematics and Natural Sciences, 2016, University of Gävle
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23082
► Dagvattnet tar ofta med sig stadens föroreningar och därmed kan ett behov av rening finnas, för att skydda recipienten. Ett system för att rena…
(more)
▼ Dagvattnet tar ofta med sig stadens föroreningar och därmed kan ett behov av rening finnas, för att skydda recipienten. Ett system för att rena och omhänderta dagvatten är biofilter, som använder sig av de kemiska, biologiska och fysikaliska egenskaper som finns hos jord, mikrober och växter. Biofilter är vanligtvis uppbyggt som en vegetationsbeklädd infiltrationsbädd. I Gävle leds vanligtvis dagvattnet direkt ut till vattendrag, det är endast en mycket liten andel av dagvattnet som leds till reningsverk. Att det finns ett intresse för biofilter i Gävle har framkommit genom intervjuer med personer som är verksamma i Gävle inom den gröna sektorn. Syftet med detta arbete är att ge en insikt i hur biofilter fungerar under svenska klimatförhållanden och ge uppslag till växter som skulle kunna passa i ett biofilter om det vore placerat i det klimat som råder i Gävle. Arbetet har genomförts som en litteraturstudie där fakta sökt i olika databaser. Även en mindre intervjustudie har gjorts och de personer som har valts för intervjustudien är verksamma inom den gröna sektorn i Gävle och arbetar på företag som har stor inverkan på stadens utformning. I områden med kallt klimat kan dagvattenhantering med biofilter stå inför en del svårigheter vintertid, så som minskad biologisk aktivitet, temporal frysning och vägsalt. Studier kring biofilters effektivitet och reningskapacitet under kallt klimat har visat att biofilter fungerar bra även under kalla förhållanden. Vegetationen i ett biofilter har flera funktioner och effekter, bland annat så bidrar de till reningen av metaller, möjliggör sedimentation och bidrar till utvecklandet av biofilm. När man väljer växter till ett biofilter bör man titta på växter som tål torra till normala markförhållanden. Det är också bra att ha en blandning av snabbväxande och långsamväxande arter samt kombinera växter med grunt och djupt rotsystem. Vid val av växter till en stad som Gävle är härdighet en viktig faktor att ta i beaktande, viktigt är också friskt växtmaterial. Med utgångspunkt i detta har förslag på växter sammanställts i olika växtlistor. Forskningsresultaten kring biofilters prestanda och reningskapacitet under kalla förhållanden indikerar att användandet av biofilter för omhändertagande och rening av dagvatten är ett fungerande system även för områden med kallt klimat. Biofilters användning ser ut att öka i framtiden och då det är ett ganska nytt system i Sverige behöver information spridas och medvetenheten om biofilters funktioner och värden ökas.
Stormwater often brings the city's pollutions whit it and therefore there might be a need for treatment of the water, to protect the recipient. Bioretention systems are systems for stormwater retention and treatment, that uses the chemical, biological and physical properties inherent to the soil, microbes and plants for pollutant removal. Bioretention systems are typically constructed as an infiltration bed with vegetation upon it. The city of Gävle usually leads it’s stormwater directly into small…
Subjects/Keywords: Biofilter; Vegetation; Kallt klimat; Dagvattenhantering; Horticulture; Trädgårdsvetenskap/hortikultur
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APA (6th Edition):
Hiller, M. (2016). Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle. (Thesis). University of Gävle. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23082
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hiller, Malin. “Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle.” 2016. Thesis, University of Gävle. Accessed April 10, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23082.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hiller, Malin. “Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle.” 2016. Web. 10 Apr 2021.
Vancouver:
Hiller M. Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle. [Internet] [Thesis]. University of Gävle; 2016. [cited 2021 Apr 10].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23082.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hiller M. Funktion och vegetation för biofilter i kallt klimat : Med fokus på Gävle. [Thesis]. University of Gävle; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23082
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
22.
Merola, Chiara (author).
Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India.
Degree: 2018, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:4cf4717c-29a0-4ade-bdc7-92e8634586a6
► Delhi is facing a very rapid urbanization, making it difficult to keep up with the construction of sewerage and water treatment infrastructure. The LOTUSHR project…
(more)
▼ Delhi is facing a very rapid urbanization, making it difficult to keep up with the construction of sewerage and water treatment infrastructure. The LOTUSHR project was created to research alternative solutions to treat mixed water streams and prevent pollution flows from urban drains into the environment. Biofiltration was identified as a suitable on-site sanitation alternative to provide adequate water quality and hygienic conditions. In particular, this work is intended as a first step in the future design of the biofilter, by investigating the potential of hydrophilic mineralwool as a filtering medium for the Barapullah drain contaminated water. Mineralwool performance was tested, focusing on nutrients and heavy metals removal. The effect of different HRT’s on biofilm formation was evaluated and the minimum length for optimal filter performance was researched. The fieldwork was conducted in Delhi between the 4th January and 9th February 2018. Four mineralwool filters were monitored, running with different operational parameters under the same environmental conditions. Biological activity was identified as a key factor in increasing the removals of COD and NH3-N. Bare mineralwool achieved PO4-P reduction, independently from the presence of a biofilm. Moreover, a shorter HRT determined a selection pressure for attached biomass growth, leading to a more swift biofilm formation. Unfortunately, part of the obtained results showed a high error margin. Possible reasons for these error margins are discussed. Hydrophilic mineralwool is an emerging material and not much research is yet available on its water filtering properties. This thesis suggests that mineralwool can be used as a pre-treatment step in the sanitation of polluted drains in rapidly urbanizing megacities.
LOTUS-HR
Water Management
Advisors/Committee Members: de Kreuk, Merle (mentor), Lindeboom, Ralph (mentor), Bogaard, Thom (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: mineralwool; on-site sanitation; biofilter; India; LOTUS-HR
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APA (6th Edition):
Merola, C. (. (2018). Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:4cf4717c-29a0-4ade-bdc7-92e8634586a6
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Merola, Chiara (author). “Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India.” 2018. Thesis, Delft University of Technology. Accessed April 10, 2021.
http://resolver.tudelft.nl/uuid:4cf4717c-29a0-4ade-bdc7-92e8634586a6.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Merola, Chiara (author). “Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India.” 2018. Web. 10 Apr 2021.
Vancouver:
Merola C(. Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India. [Internet] [Thesis]. Delft University of Technology; 2018. [cited 2021 Apr 10].
Available from: http://resolver.tudelft.nl/uuid:4cf4717c-29a0-4ade-bdc7-92e8634586a6.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Merola C(. Performance of mineralwool as filter medium for the treatment of contaminated drain water in the urban context of Delhi, India. [Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:4cf4717c-29a0-4ade-bdc7-92e8634586a6
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Windsor
23.
Reaume, Michael James.
Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent.
Degree: MA, Civil and Environmental Engineering, 2012, University of Windsor
URL: https://scholar.uwindsor.ca/etd/5375
► Ozone has been shown to be very effective in the transformation of several CECs that escape the wastewater treatment process, but there is concern…
(more)
▼ Ozone has been shown to be very effective in the transformation of several CECs that escape the wastewater treatment process, but there is concern whether toxic transformation products are formed. Two parallel
biofilter columns with granular activated carbon (GAC) and filter sand following a pilot scale ozone unit to treat secondary municipal wastewater treatment plant effluent were studied. The biologically activated carbon (BAC)
biofilter outperformed the sand
biofilter in terms of DOC, DO and UV
254
removal. In addition, GAC supported more biological activity than sand media. Genotoxicity results show reduced wastewater genotoxicity following ozonation and further reduction following BAC and sand biofiltration. However, bacterial re-growth did occur in both biofilters following ozonation and needs to be taken into consideration when implementing ozone-biofiltration units.
Advisors/Committee Members: Rajesh Seth.
Subjects/Keywords: BAC; Genotoxicity; Municipal wastewater treatment; Ozone; Sand biofilter
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APA (6th Edition):
Reaume, M. J. (2012). Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5375
Chicago Manual of Style (16th Edition):
Reaume, Michael James. “Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent.” 2012. Masters Thesis, University of Windsor. Accessed April 10, 2021.
https://scholar.uwindsor.ca/etd/5375.
MLA Handbook (7th Edition):
Reaume, Michael James. “Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent.” 2012. Web. 10 Apr 2021.
Vancouver:
Reaume MJ. Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent. [Internet] [Masters thesis]. University of Windsor; 2012. [cited 2021 Apr 10].
Available from: https://scholar.uwindsor.ca/etd/5375.
Council of Science Editors:
Reaume MJ. Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent. [Masters Thesis]. University of Windsor; 2012. Available from: https://scholar.uwindsor.ca/etd/5375
Louisiana State University
24.
Wu, Qiang.
Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment.
Degree: MSCE, Civil and Environmental Engineering, 2003, Louisiana State University
URL: etd-0612103-153504
;
https://digitalcommons.lsu.edu/gradschool_theses/1815
► Floating Bead Biofilters (FBFs) have been applied to aquacultural recirculating tanks and domestic wastewater treatment systems for controlling total ammonia nitrogen (TAN), biochemical oxygen…
(more)
▼ Floating Bead Biofilters (FBFs) have been applied to aquacultural recirculating tanks and domestic wastewater treatment systems for controlling total ammonia nitrogen (TAN), biochemical oxygen demand (BOD), and total suspended solids (TSS). Support modified media in these FBFs provide a large surface area (1150~1475 m2/m3) so that the active biofilm can be retained in the FBF by attaching to the media surface. Understanding the theories involved in biofilm processes greatly helps in sizing, designing, and modeling of FBF systems. Fundamental biofilm processes like mass transport of various substrates into the biofilm and the substrate utilization within the biofilm were studied. A mathematical model (MSB Model) was set up to predict the development of the FBFs characteristics such as biofilm growth, substrates utilization, dissolved oxygen consumption, BOD loading removal, volumetric oxygen consumption rate by filter (OCF), and bead bed volume under the different conditions. This model was then calibrated with a set of bioclarification data. The model results were consistent with literature defining the relationships between dissolved oxygen consumption, BOD loading removal, and biofilm growth. This model is specifically used to predict design parameters for FBFs in a municipal sewage treatment systems. The entire study was based on the following experimental parameters: OCF, dissolved oxygen (DO), hydraulic loading, BOD loading, maximum ratio of BOD removal to OCF (MX-factor).
Subjects/Keywords: wastewater treatment; biofilter; mathematical modeling
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APA (6th Edition):
Wu, Q. (2003). Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment. (Masters Thesis). Louisiana State University. Retrieved from etd-0612103-153504 ; https://digitalcommons.lsu.edu/gradschool_theses/1815
Chicago Manual of Style (16th Edition):
Wu, Qiang. “Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment.” 2003. Masters Thesis, Louisiana State University. Accessed April 10, 2021.
etd-0612103-153504 ; https://digitalcommons.lsu.edu/gradschool_theses/1815.
MLA Handbook (7th Edition):
Wu, Qiang. “Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment.” 2003. Web. 10 Apr 2021.
Vancouver:
Wu Q. Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment. [Internet] [Masters thesis]. Louisiana State University; 2003. [cited 2021 Apr 10].
Available from: etd-0612103-153504 ; https://digitalcommons.lsu.edu/gradschool_theses/1815.
Council of Science Editors:
Wu Q. Mathematical modeling analysis of Floating Bead Biofilter applications to domestic wastewater treatment. [Masters Thesis]. Louisiana State University; 2003. Available from: etd-0612103-153504 ; https://digitalcommons.lsu.edu/gradschool_theses/1815
University of Georgia
25.
Wang, Li.
Microbial degradation kinetics of volatile organic compound mixtures in a biofilter.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/23753
► Biofiltration degradation kinetics of an aldehyde mixture containing hexanal, 2-methylbutanal, and 3-methylbutanal was investigated using a bench-scale, synthetic medium based biofilter. The adsorption capacity of…
(more)
▼ Biofiltration degradation kinetics of an aldehyde mixture containing hexanal, 2-methylbutanal, and 3-methylbutanal was investigated using a bench-scale, synthetic medium based biofilter. The adsorption capacity of the synthetic medium for
3-methylbutanal was 10 times that of compost. Higher moisture content leads to higher removal efficiency. RTD analysis showed no compaction or channeling. Kinetic analysis suggested an overall first order model was more appropriate. In the range of 20-50
ppmv inlet each, hexanal had a significantly higher reaction rate compared to the branched aldehydes. SEM analysis of the medium samples showed microbial growth suggesting removal of the aldehydes could be attributed to biodegradation. Methanethiol was
added into the system 15 months later. Low removal of methanethiol was observed, yet the reaction rates of the aldehydes increased. DMDS was formed along the reactor. An external mass transfer model was fit to the data suggesting the overall reaction was
limited by mass transfer.
Subjects/Keywords: Biofilter; synthetic matrix; kinetics; aldehyde; microorganisms; reaction rate
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Manager
APA (6th Edition):
Wang, L. (2014). Microbial degradation kinetics of volatile organic compound mixtures in a biofilter. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/23753
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Li. “Microbial degradation kinetics of volatile organic compound mixtures in a biofilter.” 2014. Thesis, University of Georgia. Accessed April 10, 2021.
http://hdl.handle.net/10724/23753.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Li. “Microbial degradation kinetics of volatile organic compound mixtures in a biofilter.” 2014. Web. 10 Apr 2021.
Vancouver:
Wang L. Microbial degradation kinetics of volatile organic compound mixtures in a biofilter. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10724/23753.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang L. Microbial degradation kinetics of volatile organic compound mixtures in a biofilter. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/23753
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
26.
-3510-8690.
Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters.
Degree: PhD, Civil Engineering, 2019, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/2828
► Drinking-water biologically active filters (biofilters) can transform organic and inorganic contaminants. One concern with biofilters is their potential to develop headloss more rapidly than do…
(more)
▼ Drinking-water biologically active filters (biofilters) can transform organic and inorganic contaminants. One concern with biofilters is their potential to develop headloss more rapidly than do conventional, abiotic filters. Phosphorus (P) supplementation is one proposed engineering enhancement strategy for mitigating increased headloss, but experiences with P supplementation in the field have been mixed, with some plants observing lower headloss while others observe no hydraulic benefit.
P limitation in drinking water typically is identified by a biodegradable carbon to phosphorus molar ratio (C:P) greater than 100 in the water. This study evaluated the impact of five increasingly restrictive C:P ratios on substrate consumption, biofilm properties, and headloss in bench-scale biofilters. An improved protocol was developed to extract extracellular polymeric substances (EPS) from granular filter media so that EPS concentrations could be related to headloss. The ratio of phosphatase activity to total glycosidase activity (PHO:GLY) was positively correlated to the ΔC:P ratio (calculated using the change in dissolved organic carbon concentration across the
biofilter), suggesting its suitability as an indicator of P limitation in biofilters. As the imposed P limitation was increased, substrate consumption decreased, biomass concentration decreased, EPS concentrations increased, the biofilm was more filamentous, and the microbial community contained a higher proportion of Bradyrhizobiaceae and Hyphomicrobiaceae. The biofilm alone did not cause substantial increases in headloss within the timescale of interest for full-scale biofilters; however, in the presence of influent particles, headloss accumulated more rapidly in the P-limited column (average PHO:GLY 205), which had higher EPS concentrations and more filamentous biofilm morphology, than in the balanced column (average PHO:GLY 31).
The impact of P supplementation was evaluated at three pilot systems. P supplementation lowered headloss by >35% and resulted in less filamentous biofilm morphology in the one system where headloss was monitored, but substrate consumption, biomass concentration, EPS concentrations, and microbial community composition did not change in response to P supplementation in any of the tested pilot systems. The pilot-scale biofilters had PHO:GLY ratios similar to the balanced (ΔC:P 150) bench-scale column, so the existing P limitation likely was mild. This study demonstrated the utility of PHO:GLY in identifying P limitation.
Advisors/Committee Members: Kirisits, Mary Jo (advisor), Gordon, Vernita D (committee member), Kinney, Kerry A (committee member), Lawler, Desmond F (committee member), Speitel Jr., Gerald E (committee member).
Subjects/Keywords: Drinking-water biofilter; Extracellular polymeric substances; Phosphorus limitation
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APA (6th Edition):
-3510-8690. (2019). Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/2828
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-3510-8690. “Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed April 10, 2021.
http://dx.doi.org/10.26153/tsw/2828.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-3510-8690. “Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters.” 2019. Web. 10 Apr 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-3510-8690. Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Apr 10].
Available from: http://dx.doi.org/10.26153/tsw/2828.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-3510-8690. Impact of phosphorus limitation on the hydraulic performance of drinking-water biologically active filters. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/2828
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Canterbury
27.
Dang, Quang Anh.
The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.
Degree: PhD, Chemical Engineering, 2019, University of Canterbury
URL: http://dx.doi.org/10.26021/2977
► This study quantitatively determined the importance and potential interaction between operating conditions – combination of residual pollutant concentration and water potential and soil type on…
(more)
▼ This study quantitatively determined the importance and potential interaction between operating conditions – combination of residual pollutant concentration and water potential and soil type on %CO2 recovery and biofilter performance (elimination capacity - EC). A 2 x 3 factorial design was adopted, which included two levels of operating conditions: (1) low residual pollutant concentrations and wetter conditions and (2) high residual pollutant concentrations; and drier conditions. This experimental design was done for three types of soil (Soil 1, Soil 2, Soil 3).
A continuous lab-scale differential biofilter was used as a research tool to control the environmental conditions. The biofilter was operated without supplemental nutrient addition to remove a variety of pollutants (toluene and methane) in an air stream. The carbon flux was rigorously tracked through the biofiltration system. Over the range of operation, the carbon balance closure for 37 experiments was 96.1 ± 5.3%. The carbon fraction found in the liquid phase was less than 5% of the degraded carbon. Majority of the biodegraded carbon (> 90%) ends up in the form of either CO2 or active biomass/EPS.
In general, operating the toluene biofilters at low residual concentrations (5 ppm to 49 ppm) and wetter condition (-10 cmH₂O) resulted in a 20% higher EC and a 20% higher CO₂ than operating at high residual concentrations (115 ppm to 146 ppm) and drier condition (-100 cmH₂O). Conversely, operating the methane biofilters at low residual concentrations (1709 ppm to 1942 ppm) and wetter condition (-10 cmH₂O) resulted in a 35% lower EC and a 45% higher CO₂ than operating at high residual concentrations (8590 ppm to 9054 ppm) and drier condition (-100 cmH2O).
Soil type had a strong effect on the EC and %CO₂ recovery in methane biofilters and on the EC in toluene biofilters. Among three soil types, Soil 2 had the lowest EC. The interaction between soil type and operating condition was not significant. Preliminary microbial analysis suggested the differences in the community structure was mainly attributed to the soil type rather than the operating conditions, type of substrate during acclimation.
A feedback control system was developed to maintain the residual toluene to the desired value. The impact of residual toluene concentration on biofilter performance packed with Soil 2 was investigated. Substrate inhibition occurred when the residual toluene concentration exceeded 250 ppm. Start-up concentration studies showed that starting the reactor at a lower residual concentration (20 ppm) then increasing it to higher value (65 ppm) increased the EC by 22% compared to starting the reactor at a high residual concentration (65 ppm).
Subjects/Keywords: Soil biofilter; toluene; methane; carbon balance; feedback control system
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APA (6th Edition):
Dang, Q. A. (2019). The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/2977
Chicago Manual of Style (16th Edition):
Dang, Quang Anh. “The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.” 2019. Doctoral Dissertation, University of Canterbury. Accessed April 10, 2021.
http://dx.doi.org/10.26021/2977.
MLA Handbook (7th Edition):
Dang, Quang Anh. “The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter.” 2019. Web. 10 Apr 2021.
Vancouver:
Dang QA. The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. [Internet] [Doctoral dissertation]. University of Canterbury; 2019. [cited 2021 Apr 10].
Available from: http://dx.doi.org/10.26021/2977.
Council of Science Editors:
Dang QA. The effects of residual concentration and moisture content on pollutant removal and carbon recovery in a soil biofilter. [Doctoral Dissertation]. University of Canterbury; 2019. Available from: http://dx.doi.org/10.26021/2977
University of Sydney
28.
Kabir, Md. Imran.
Dynamics of heavy metals in urban green water infrastructures
.
Degree: 2015, University of Sydney
URL: http://hdl.handle.net/2123/14510
► In urban environments, the breakdown of chemicals and pollutants, especially ions and metal compounds, can be favoured by Green Water Infrastructures (GWIs). If a better…
(more)
▼ In urban environments, the breakdown of chemicals and pollutants, especially ions and metal compounds, can be favoured by Green Water Infrastructures (GWIs). If a better picture of chemicals and pollutants input and an improved understanding of hydrological and biogeochemical processes affecting these pollutants were known, GWIs could be designed to efficiently retain these pollutants for site-specific meteorological patterns and pollutant load. To fill in these gaps, the existing literature was surveyed to retrieve a comprehensive dataset of anions and heavy metal pollutants incoming to urban environments. The existing literature was then surveyed to review the metal retention efficiency, and hydrological- and metal biogeochemical- models of GWIs. Next, biogeochemical processes related to inorganic metal compounds were proposed to be integrated in biogeochemical models of GWIs. A deterministic model has been developed to describe the bulk breakdown rate, accumulation and leaching of Cu, Pb, and Zn in GWIs. The model describes aqueous complexation, mineral adsorption and kinetic methylation of those metals, and has been tested against experimental hydrographs and pollutographs of a GWI (a stormwater biofilter in Monash University) over a period of 100 days. Parameter calibration resulted in R2 98% and in NRMSE < 12% against cumulative effluent water and metal mass. The concentration of Cu and Pb was linearly correlated to the hydraulic conductivity, and equilibrium and kinetic rate constants, whereas Zn concentration was exponentially correlated to them; it was found that ± 20% change in these parameter values returned changes in Cu, Pb and Zn concentrations within about ± 52%, ± 45% and ± 96%, respectively. The maximum annual metal load in the outflow from the biofilter was observed for the rainfall combination with lowest frequency and highest intensity. This model can be effectively used to assist in designing biofilters and assessing their long-term performance.
Subjects/Keywords: Metal geochemistry;
Modelling;
Stormwater biofilter;
Urban ecosystem;
Water sensitive urban design
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APA (6th Edition):
Kabir, M. I. (2015). Dynamics of heavy metals in urban green water infrastructures
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/14510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kabir, Md Imran. “Dynamics of heavy metals in urban green water infrastructures
.” 2015. Thesis, University of Sydney. Accessed April 10, 2021.
http://hdl.handle.net/2123/14510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kabir, Md Imran. “Dynamics of heavy metals in urban green water infrastructures
.” 2015. Web. 10 Apr 2021.
Vancouver:
Kabir MI. Dynamics of heavy metals in urban green water infrastructures
. [Internet] [Thesis]. University of Sydney; 2015. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/2123/14510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kabir MI. Dynamics of heavy metals in urban green water infrastructures
. [Thesis]. University of Sydney; 2015. Available from: http://hdl.handle.net/2123/14510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
29.
Huang, Jing-yi.
Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips.
Degree: Master, Environmental Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625108-103903
► This study armed to develop a biotrickling biofilter packed only with fern chips for the removal of air-borne low concentration VOCs (volatile organic compounds) emitted…
(more)
▼ This study armed to develop a biotrickling
biofilter packed only with fern chips for the removal of air-borne low concentration VOCs (volatile organic compounds) emitted from a solvent refinery located in Kaohsiung county of southern Taiwan. The fern chips could avoid the shortcomings of traditional media, such as compaction, drying, and breakdown, which lead to the performance failure of the biofilters.
A pilot-scale
biofilter (0.80 mL Ã 0.75 mW Ã 1.50 mH) packed with 0.24 m3 fern chips was used for the performance study. The study was conducted in the plant by drawing vented gas streams from two distillation columns and two solvent storage vessels. The gas streams contain aromatics and oxygenated hydrocarbons such as benzene, alcohols, and esters.
Results indicated that suitable nutrition rates are 10, 100, and 10 g/m3.d, respectively, of milk powder, Urea-N, and K2HPO4-P, accompanied with a water spraying rate of 125 L/m3.d. Around 85% of VOCs in the influent gas with concentrations of 600-3,200 ppm (as CH4) could be removed under an average loading of 60 g VOC (as methane)/m3.h. A test indicated that odor intensity (expressed as dilution to threshold (D/T) ratio) of the influent gas could be reduced from around 7,330 to 73.
Advisors/Committee Members: Mei-Jywan Syu (chair), Wen-Jhy Lee (chair), Ming-Shean Chou (committee member).
Subjects/Keywords: fern chips; Biotrickling biofilter; waste gas from solvent-manufacturing plants; volatile organic compounds (VOCs)
Record Details
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Huang, J. (2008). Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625108-103903
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Jing-yi. “Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips.” 2008. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625108-103903.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Jing-yi. “Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips.” 2008. Web. 10 Apr 2021.
Vancouver:
Huang J. Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625108-103903.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang J. Performance Study on the Treatment of Airborne VOCs Generated from A Chemical Plant by A Pilot Biofiter Packed with Fern Chips. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625108-103903
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
30.
Tseng, Chia-Ling.
Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips.
Degree: Master, Environmental Engineering, 2010, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804110-102654
► Organic solvent production plants emit waste gases containing volatile organic compounds (VOCs) which are usually harmful to the environments and public healths. Plant managers are…
(more)
▼ Organic solvent production plants emit waste gases containing volatile organic compounds (VOCs) which are usually harmful to the environments and public healths. Plant managers are obligated to control the VOC emission to meet regulations at reasonable costs. A solvent plant located in southern Taiwan emits VOC-containing gas streams from some distillation columns and storage vessels with a total ventilation gas flow rate of 2.6-3.6 m3/min which contains VOCs with concentrations of less than 1,000 mg C/m3. Due to a concern of plantâs safety, the plant managers constructed a full-scale
biofilter for eliminating a part of the VOCs and the associated odors in the waste gas. This study aimed to investigate the effects of operation parameters such as EBRT (empty bed retention time) of the gas through the biofiltration media and organic loading to the media on the VOC removal efficiency.
The
biofilter is constructed of RC (reinforced concrete) with outer dimensions of 8.45 mL Ã 3.30 mW Ã 3.00 mH. The filter was also instrumented with inverters for control of speed of induced fans, and with thermometers, hygrometers, and wind speed meters. Fern chips with a total packing volume of 36 m3 was used as the biofiltration media. After inoculation with suitable microorganisms, the waste gas was introduced to the filter for VOC elimination. Nutrients (urea, milk, and a phosphate salt) and water were supplemented to the media on a daily basis.
The investigation period is July, 2008 to May, 2010. In the period, THC (total hydrocarbon) concentrations for the influent and effluent gases to and from the reactor were daily measured. In addition, on a weekly basis, compositions of the VOCs in gas samples were detected by a gas chromatography equipped with a flame ionization dector (FID). On the same time basis, pH, COD (chemical oxygen demand), SS (suspended solids) in a sample of the trickled liquid from the media was analyzed. Media pH and moisture content were also analyzed for understanding the environmental conditions around the microorganisms for the VOC degradation.
Results indicated that the media was in conditions of pH = 4.5-7.0, moisture = 11-61 % in the experimental phase. Trickled liquid had low COD and SS contents which can be easily treated by the existing wastewater unit in the plant, or be recycled to the media. Avarage THC, NMHC (nonmethane hydrocarbon), and VOCs were 71, 73, and 79%, respectively, with gas EBRTs of 4.2-6.3 min. With media pH of 4-5 and moisture contents 51-57%, over 90% of the influent VOCs coulb be eliminated. However, nearly dried media (moisture around 10%) had VOC removal efficiencies of lower than 30%. Nutrition tests indicate that the VOC removal efficiency was nearly proportional to milk supplementation rate. Removal of ethnaol and acetic could easily be removed with an efficiency of over 97% while 2-pentane was only 74%. Odor intensities of the treated gas could be controlled to <1,000 (dilutions to threshold) according to 3 test data.
Advisors/Committee Members: Mei-Jywan Syu (chair), Ming-Shean Chou (committee member), Ju-Sheng Huang (chair).
Subjects/Keywords: air pollution control; volatile organic compounds (VOCs); fern chips; organic solvents; trickling bed biofilter
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tseng, C. (2010). Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804110-102654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tseng, Chia-Ling. “Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips.” 2010. Thesis, NSYSU. Accessed April 10, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804110-102654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tseng, Chia-Ling. “Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips.” 2010. Web. 10 Apr 2021.
Vancouver:
Tseng C. Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips. [Internet] [Thesis]. NSYSU; 2010. [cited 2021 Apr 10].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804110-102654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tseng C. Performance Study on the Field Treatment of VOCs Emitted from a Solvent Plant by Biofilter Packed with Fern Chips. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804110-102654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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