+publisher:"Temple University" +contributor:("Suri, Rominder P.S.")

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Temple University

1. Bhattarai, Bikash. DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER.

Degree: PhD, 2015, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,332757

► Civil Engineering p>There are many reports indicating the presence of various emerging contaminants (ECs) in treated wastewater and other water sources. The detection of such… (more)

▼ Civil Engineering p>There are many reports indicating the presence of various emerging contaminants (ECs) in treated wastewater and other water sources. The detection of such contaminants in the environment and the ability of these contaminants to pose potential threats to the environment at very low concentrations have led to a need for more efficient treatment technologies. Cyclodextrins (CDs) have gained significant interest as an alternative adsorbent for water and wastewater treatment because of their unique physico-chemical characteristics and excellent selectivity towards organic compounds. The property of CD to form inclusion complexes with various molecules through host-guest interactions has made it a useful compound for the removal of a number of contaminants from water and wastewater. The overall goal of the study is to identify and develop a novel adsorbent for the removal of ECs of interest. The specific objectives are a) to synthesize various beta-cyclodextrin (BCD) based adsorbents by coating BCD onto different supports such as silica, filter paper, iron oxide, and zeolite, b) to perform batch and column experiments using the developed adsorbents, c) to evaluate the performance of the adsorbents in different water matrices such as MQ water, simulated wastewater in presence of humic acid, and real municipal wastewater, d) to study the regeneration potential of the adsorbents. In this research, various (BCD) based hybrid adsorbents were synthesized and their performances were evaluated based on the removal of selected ECs. At first, chemically bonded BCD onto silica particles as hybrid adsorbents were synthesized by using crosslinking agents and copolymers. Three different methods were used to synthesize 14 different BCD coated silica adsorbents. The adsorbent prepared by reacting BCD with hexamethylene diisocyanate (HMDI) as crosslinking agent and dimethyl sulfoxide (DMSO) as solvent showed best results in removing the ECs studied. The adsorbent showed more than 95% removal of 17β-estradiol (in single component) and more than 90% of most of the estrogens (mixture of 12), more than 99% of perfluorooctanoic acid (PFOA) (in single component) and more than 90% of most of the PFCs (mixture of 10), and a maximum of 90% removal in case of BPA. The adsorption capacity of the developed adsorbent was observed to be higher for the removal of 17β-estradiol and PFOA than that of commercially available activated carbon (F400) in MQ water. In order to represent the real environmental scenario, further batch experiments were conducted for the removal of two PFCs (PFOA and PFOS (perfluorooctane sulfonic acid)), 17β-estradiol, and BPA at environmentally relevant concentrations from wastewater. The adsorbent was effective in removing the ECs that were spiked in the secondary effluent of a municipal wastewater treatment plant. Furthermore, the adsorbent was successfully regenerated with methanol over four cycles without significant loss in its adsorption capacity for the removal of PFOA and estrogens. Ozonation as an…p> Advisors/Committee Members: S.%3B%22%29&pagesize-30">Suri, Rominder P.S.;, S.%22%29&pagesize-30">Suri, Rominder P.S., Zhang, Judy, Van Aken, Benoit, Pleshko, Nancy;.

Subjects/Keywords: Engineering; Environmental engineering;

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APA (6^th Edition):

Bhattarai, B. (2015). DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,332757

Chicago Manual of Style (16^th Edition):

Bhattarai, Bikash. “DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER.” 2015. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,332757.

MLA Handbook (7^th Edition):

Bhattarai, Bikash. “DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER.” 2015. Web. 16 Jan 2021.

Vancouver:

Bhattarai B. DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER. [Internet] [Doctoral dissertation]. Temple University; 2015. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,332757.

Council of Science Editors:

Bhattarai B. DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER. [Doctoral Dissertation]. Temple University; 2015. Available from: http://digital.library.temple.edu/u?/p245801coll10,332757

Temple University

2. Johnson, Candice Marcia. Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions.

Degree: PhD, 2012, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,214801

► Civil Engineering p>Steroid hormones confer biological activity to effluents of wastewater treatment plants (WWTPs). The occurrence of estrogen and androgen hormones in addition to their… (more)

▼ Civil Engineering p>Steroid hormones confer biological activity to effluents of wastewater treatment plants (WWTPs). The occurrence of estrogen and androgen hormones in addition to their biological effects in the environment have been widely studied and there is a growing consensus that mixtures of steroid hormones; albeit at low ng L-1concentrations, lead to endocrine disruption in some aquatic organisms. These mixtures may also be influenced by the contributions of synthetic estrogens and androgens, which may display either additive or antagonistic activity. In order to measure the ability of a single compound, or complex mixture to influence the function of estrogenic or androgenic signaling pathways bioassays are used. Most commonly, these tests are in vitro and may quantify the ability of a compound to bind and/or (in) activate the steroid receptors. Two commonly used bioassays for estrogenicity detection are the Yeast Estrogen Screen (YES) and the E-Screen assay. The Yeast Androgen Screen (YAS) is commonly used to measure androgenic activity. The yeast (Saccharomyces cerevisiae) are genetically transformed and express either the human Estrogen Receptor (ER) or Androgen Receptor (AR), and contain Estrogen or Androgen Responsive Elements (ERE/ARE) and Lac Z reporting plasmids. Once the receptors become activated, beta-Galactosidase is secreted into the assay medium and the level of beta-Galactosidase secretion relates to the estrogenicity or androgenicity of the sample tested. Due to its simplicity and the moderately fast assay time, the YES and YAS are commonly used assays in the analysis of complex mixtures to identify the major contributors to both estrogenic and (anti)-androgenic activity in environmental water. The effect directed approach combines both chemical methods and bioassays in a chemical fractionation scheme that is directed by the bioassays. In order to confirm the identity of the key contributors, it is important to compare the biological activities that are calculated from the concentrations of the identified hormones (given their individual biological responses) and the total biological activity measured through the use of bioassays, Equation 1. RPsCs+ RP2C2+ ...+RPnCn = IEQ (1) where Cn is the concentration of the nth mixture constituent, RP is the relative (estrogenic or androgenic) potential of the nth mixture constituent as determined in the bioassay, and IEQ is the estimated total induction equivalent concentration of the mixture by chemical methods. Cs and RPs represents the concentration and relative potential of a standard compound respectively. Agreement between the chemically and biologically derived IEQs means that the major contributors to the biological effect have been successfully identified. However, the biological assays measure the contribution of additive, antagonistic and synergistic activity in the mixture; therefore, the biologically derived IEQs represent the net biological activity. Chemical methods are unable to predict these interactions and as such the result of the…p> Advisors/Committee Members: S.%22%29&pagesize-30">Suri, Rominder P.S., Van Aken, Benoit, Manickavachagam, Muruganandham, Achary, Mohan P..

Subjects/Keywords: Environmental engineering; Toxicology; Biology; Androgen; Antagonism; Endocrine disruption; Estrogen; Prediction models; Synergism

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APA (6^th Edition):

Johnson, C. M. (2012). Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,214801

Chicago Manual of Style (16^th Edition):

Johnson, Candice Marcia. “Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions.” 2012. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,214801.

MLA Handbook (7^th Edition):

Johnson, Candice Marcia. “Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions.” 2012. Web. 16 Jan 2021.

Vancouver:

Johnson CM. Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions. [Internet] [Doctoral dissertation]. Temple University; 2012. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,214801.

Council of Science Editors:

Johnson CM. Predicting the Estrogenic and Androgenic Activity of Environmental Waters: A Quantitative Study on Mixture Interactions. [Doctoral Dissertation]. Temple University; 2012. Available from: http://digital.library.temple.edu/u?/p245801coll10,214801

Temple University

3. Taujale, Saru. INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE.

Degree: PhD, 2015, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,347169

► Civil Engineering p>Mn oxides have high redox potentials and are known to be very reactive, rendering many contaminants susceptible to degradation via oxidation. Although Mn… (more)

▼ Civil Engineering p>Mn oxides have high redox potentials and are known to be very reactive, rendering many contaminants susceptible to degradation via oxidation. Although Mn oxides typically occur as mixtures with other metal oxides (e.g., Fe, Al, and Si oxides) and natural organic matter (NOM) in soils and aquatic environments, most studies to date have studied the reactivity of Mn oxides as a single oxide system. This study, for the first time, examined the effect of representative metal oxides (Al2O3, SiO2, TiO2, and Fe oxides) and NOM or NOM-model compounds (Aldrich humic acid (AHA), Leonardite humic acid (LHA), pyromellitic acid (PA) and alginate) on the oxidative reactivity of MnO2, as quantified by the oxidation kinetics of triclosan (a widely used phenolic antibacterial agent) as a probe compound. The study also examined the effect of soluble metal ions released from the oxide surfaces on MnO2 reactivity. In binary oxide mixtures, Al2O3 decreased the reactivity of MnO2 as a result of both heteroaggregation and complexation of soluble Al ions with MnO2. At pH 5, the surface charge of MnO2 is negative while that of Al2O3 is positive resulting in intensive heteroaggregation between the two oxides. Up to 3.15 mM of soluble Al ions were detected in the supernatant of 10 g/L of Al2O3 at pH 5.0 whereas the soluble Al concentration was 0.76 mM in the mixed Al2O3 + MnO2 system at the same pH. The lower amount of soluble Al in the latter system is the result of Al ion adsorption by MnO2. The experiments with the addition of 0.001 to 0.1 mM Al3+ to MnO2 suspension indicated the triclosan oxidation rate constant decreased from 0.24 to 0.03 h-1 due to surface complexation. Fe oxides which are also negatively charged at pH 5 inhibited the reactivity of MnO2 through heteroaggregation. The concentration of soluble Fe(III) ions ( 4 mg-TOC/L or [alginate/PA] > 10 mg/L, a lower extent of heteroaggregation was also observed due to the negatively charged surfaces for all oxides. Similar effects on aggregation and MnO2 reactivity as discussed above were observed for ternary MnO2‒Al2O3‒NOM systems. HAs, particularly at high concentrations (2.0 to 12.5 mg-C/L), alleviated the effect of soluble Al ions on MnO2 reactivity as a result of the formation of soluble Al-HA complexes. Alginate and PA, however, did not form soluble complexes with Al ions so they did not affect the effect of Al ions on MnO2 reactivity. Despite the above observations, the amount of Al ions dissolved in MnO2+Al2O3+NOM mixtures was too low, as a result of NOMs adsorption on the surface to passivate oxide dissolution, to have a major impact on MnO2 reactivity. In conclusion, this study provided, for the first time, a systematical understanding of the redox activity of MnO2 in complex model systems. With this new knowledge, the gap between single oxide systems and complex environmental systems is much narrower so that it is possible to have a more accurate prediction of the fate of contaminants in the environment. p>Temple University – Thesesp> Advisors/Committee Members: Zhang, Huichun;, Van Aken, Benoit, S.%22%29&pagesize-30">Suri, Rominder P.S., Strongin, Daniel R.;.

Subjects/Keywords: Environmental engineering;

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APA (6^th Edition):

Taujale, S. (2015). INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,347169

Chicago Manual of Style (16^th Edition):

Taujale, Saru. “INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE.” 2015. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,347169.

MLA Handbook (7^th Edition):

Taujale, Saru. “INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE.” 2015. Web. 16 Jan 2021.

Vancouver:

Taujale S. INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE. [Internet] [Doctoral dissertation]. Temple University; 2015. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,347169.

Council of Science Editors:

Taujale S. INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE. [Doctoral Dissertation]. Temple University; 2015. Available from: http://digital.library.temple.edu/u?/p245801coll10,347169

Temple University

4. Jadbabaei, Nastaran. REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES.

Degree: PhD, 2016, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,373275

► Civil Engineering p>Discharge of many organic contaminants (OCs) to the environment from industries such as pharmaceuticals, pesticides, dyestuffs, and chemical intermediates is one of the… (more)

▼ Civil Engineering p>Discharge of many organic contaminants (OCs) to the environment from industries such as pharmaceuticals, pesticides, dyestuffs, and chemical intermediates is one of the major concerns to human health and the ecosystem due to their high toxicity. Existing water and wastewater treatment techniques were not specifically designed to remove OCs, and the elimination rate can vary from negligible to over 90%. Therefore, development of treatment technologies to efficiently remove OCs from water and wastewater effluents is required. Polymeric resins are an alternative for treatment since they can selectively target certain OCs as they can be custom-synthesized during polymerization by including desired functional groups to the matrix. However, additional efforts and cost are needed for the regeneration of the exhausted resins and recycling of the sorbed contaminants. Palladium based catalysts supported on polymeric resins are a promising method to overcome regeneration problems and convert contaminants to less toxic chemicals. The main goals of this research were to (1) develop predictive models for the sorption of cationic OCs by resins based on a mechanistic understanding of the sorption mechanisms of a range of cationic OCs on two cation exchange resins and (2) synthesize novel resin-based Pd catalysts to selectively remove two toxic contaminants, i.e., 4-chlorophenol and 4-nitrophenol, convert them to less toxic chemicals, and evaluate the possibility of in situ regeneration of the spent resins. The sorption study indicated that electrostatic (ion exchange) and nonelectrostatic (adsorption) interactions between nonpolar moieties of solute and sorbent have synergistic effects on sorption. It also established predictive models for estimating the sorbed concentrations of a target contaminant on a given resin at any environmentally relevant pH. Our findings point to the significant role of adsorption in the overall catalytic reactivity. The rate determining step (RDS) switched from adsorption to surface reaction with increasing concentration of the reactant. This observation was confirmed by good fitting of the reaction kinetics to the Langmuir-Hinshelwood model developed based on the respective RDS. Our results demonstrated that Pd-resin composites are advantageous to water treatment because they can avoid the conventional resin regeneration process and enable recycling of reaction products of smaller environmental impacts. p>Temple University – Thesesp> Advisors/Committee Members: Zhang, Huichun;, S.%22%29&pagesize-30">Suri, Rominder P.S., Neretina, Svetlana, Shuai, Danmeng, Ren, Shenqiang;.

Subjects/Keywords: Environmental engineering;

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APA (6^th Edition):

Jadbabaei, N. (2016). REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,373275

Chicago Manual of Style (16^th Edition):

Jadbabaei, Nastaran. “REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES.” 2016. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,373275.

MLA Handbook (7^th Edition):

Jadbabaei, Nastaran. “REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES.” 2016. Web. 16 Jan 2021.

Vancouver:

Jadbabaei N. REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES. [Internet] [Doctoral dissertation]. Temple University; 2016. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,373275.

Council of Science Editors:

Jadbabaei N. REMOVAL OF ORGANIC CONTAMINANTS FROM WATER BY POLYMERIC RESINS: PREDICTIVE MODELING AND DEVELOPMENT OF RESIN-PD COMPOSITES. [Doctoral Dissertation]. Temple University; 2016. Available from: http://digital.library.temple.edu/u?/p245801coll10,373275

Temple University

5. Dietrich, Michael Thomas. COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR.

Degree: PhD, 2016, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,408072

► Civil Engineering p>Clean water is essential to life. Growth in world population, changing diets, and a warming climate are driving an increase in the demand… (more)

▼ Civil Engineering p>Clean water is essential to life. Growth in world population, changing diets, and a warming climate are driving an increase in the demand for water. Better management of water resources will help prevent scarcity, but in order to fully meet the future demand for safe, clean drinking water, new water treatment technologies are needed. This dissertation investigates a technology which is not well understood; the combination of ozone and ultrasound as potentially an efficient technology. Since nearly all previously published studies of combined ozone/ultrasound utilized batch reactors, a continuous flow reactor was constructed for this research. 1,4-Dioxane, henceforth referred to as dioxane, was chosen to evaluate the effectiveness of the combined ozone/ultrasound process. Dioxane is commonly detected in surface and groundwater and is a suspected human carcinogen. A recalcitrant contaminant, it resists direct oxidation by chlorine, oxygen, ozone, and biological treatment. It is miscible in water and doesn't sorb readily to organic matter, so it spreads rapidly in groundwater contamination plumes. It also resists air stripping and filtration, including reverse osmosis. For these reasons, dioxane makes an excellent candidate to measure the effectiveness of advanced oxidation processes, such as combined ozone/ultrasound. The treatment of dioxane by advanced oxidation processes has been studied extensively in the past. However, only one study has been published using combined ozone/ultrasound, and it was done in a batch reactor operating at a high ultrasonic frequency. The reactor built for this study also permitted reactor pressurization effects to be studied in a manner that has not been reported before for the combined ozone/ultrasound process. In this study, the combination of ozone and ultrasound was found to cause synergistic removal of dioxane from drinking water; the removal achieved by the combination significantly exceeded the sum of the removal achieved by ozone and ultrasound separately. In fact, the combination of ozone and ultrasound was found to remove more than double the dioxane that would be removed by doing both treatment processes separately. Ultrasound (20 kHz) was ineffective in removing dioxane alone, achieving less than 20% removal. At 16 mg/L, ozone alone was found to achieve removal of up to 86% after a 16 minute treatment time, but appears sensitive to matrix effects, especially pH. When ultrasound was combined with just 1.2 mg/L of aqueous ozone, over 90% removal occurred after a 16 minute treatment. Removal of dioxane was found to be driven not by ozone itself, but by radicals, suggesting that the decomposition of ozone is responsible for the generation of radical species and subsequent removal of dioxane. Ultrasound was found to increase the decomposition of ozone and appeared to be driving increased mass transfer of ozone into the aqueous phase. Modest reactor pressure appears to aid dioxane removal, but further increases in pressure did not appear to further enhance…p> Advisors/Committee Members: S.%3B%22%29&pagesize-30">Suri, Rominder P.S.;, Zhang, Huichun, McKenzie, Erica R., Hutapea, Parsaoran;.

Subjects/Keywords: Environmental engineering; Water resources management;

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APA (6^th Edition):

Dietrich, M. T. (2016). COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,408072

Chicago Manual of Style (16^th Edition):

Dietrich, Michael Thomas. “COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR.” 2016. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,408072.

MLA Handbook (7^th Edition):

Dietrich, Michael Thomas. “COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR.” 2016. Web. 16 Jan 2021.

Vancouver:

Dietrich MT. COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR. [Internet] [Doctoral dissertation]. Temple University; 2016. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,408072.

Council of Science Editors:

Dietrich MT. COMBINED OZONE AND ULTRASOUND PROCESS FOR THE DESTRUCTION OF 1,4-DIOXANE IN CONTINUOUS FLOW REACTOR. [Doctoral Dissertation]. Temple University; 2016. Available from: http://digital.library.temple.edu/u?/p245801coll10,408072

Temple University

6. Andaluri, Gangadhar. Ultrasound induced destruction of emerging contaminants.

Degree: PhD, 2011, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,111771

► Civil Engineering p>There are many reports indicating the presence of emerging contaminants such as: estrogen hormones, 1,4-dioxane and perfluoro-octanoic acids in the natural environment. Estrogen… (more)

▼ Civil Engineering p>There are many reports indicating the presence of emerging contaminants such as: estrogen hormones, 1,4-dioxane and perfluoro-octanoic acids in the natural environment. Estrogen hormones are considered important emerging class of contaminants due to their endocrine disrupting effects. These compounds are invariably found in the environment originating mostly from natural sources. Trace concentrations of estrogen hormones (low µg/L concentrations) have been detected in municipal wastewater treatment plants and observed in receiving water bodies. 1,4-Dioxane (C4H8O2) is used as an organic solvent and solvent stabilizer numerous in chemical processes. The United States Environmental Protection Agency (US-EPA) has recognized 1,4-dioxane as a toxic chemical and a possible human carcinogen. 1,4-dioxane has been detected as a contaminant in the natural environment, drinking water supplies, superfund sites, public groundwater sources in the United States, Canada and Japan at concentrations greater than the permissible standards. Perfluorinated chemicals such as perfluoro-octanoic acid (PFOA) and perfluorooctane-sulfonate (PFOS) have been manufactured for use in a variety of industrial and consumer applications. Due to their environmental persistence, PFOAs have been detected in surface waters at a number of locations at concentrations ranging from pg/L to ng/L. Elevated concentrations of PFOAs have been measured in surface and ground waters near specific point sources. Through this project, successful attempts have been made for the destruction of emerging contaminants using ultrasound. This study deals with the optimization of various process parameters for the destruction of estrogen hormones. The influence of process parameters such as power density, reactor geometry, power intensity, ultrasound amplitude, and external mixing was investigated. Artificial neural network (ANN) approach was used to describe the interactions between optimized parameters. The important findings obtained in the present work for the optimized estrogen degradation can help tackle the challenges of scale up such as operational optimization and energy consumption. The effect of process conditions such as pH and presence of oxidizing agents on the ultrasonic destruction of 1,4-dioxane and PFOA was studied. Acidic conditions favored the destruction of both the compounds. The presence of activated sulfate radicals enhanced the reaction rate kinetics. An innovative technology using electric potential and ultrasound for the removal organic contaminants was developed. The existence of organic contaminants in ionic form under certain process conditions has led to the development of this technology. Applying a low electric potential across the probe enhances the mass transfer of the contaminants into effective reaction zone, thereby enhancing the total destruction. A two-fold increase in the reaction rates was observed. This study shows ultrasound as an efficient and effective treatment technology for the destruction of emerging…p> Advisors/Committee Members: S.%22%29&pagesize-30">Suri, Rominder P.S., Biswas, Saroj K., Van Aken, Benoit, Singh, Tony S., Neretina, Svetlana.

Subjects/Keywords: Environmental Engineering; Engineering; Electro-Sonolysis; Emerging Contaminants; Reactor Optimization; Ultrasound

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APA (6^th Edition):

Andaluri, G. (2011). Ultrasound induced destruction of emerging contaminants. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,111771

Chicago Manual of Style (16^th Edition):

Andaluri, Gangadhar. “Ultrasound induced destruction of emerging contaminants.” 2011. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,111771.

MLA Handbook (7^th Edition):

Andaluri, Gangadhar. “Ultrasound induced destruction of emerging contaminants.” 2011. Web. 16 Jan 2021.

Vancouver:

Andaluri G. Ultrasound induced destruction of emerging contaminants. [Internet] [Doctoral dissertation]. Temple University; 2011. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,111771.

Council of Science Editors:

Andaluri G. Ultrasound induced destruction of emerging contaminants. [Doctoral Dissertation]. Temple University; 2011. Available from: http://digital.library.temple.edu/u?/p245801coll10,111771

Temple University

7. Kaveh, Rashid. TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS.

Degree: PhD, 2014, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,303672

► Civil Engineering p>Plants are exposed to various environmental contaminants through irrigation with reclamation water and land application of municipal biosolids. Plants have been shown to… (more)

▼ Civil Engineering p>Plants are exposed to various environmental contaminants through irrigation with reclamation water and land application of municipal biosolids. Plants have been shown to take up contaminants from soil and groundwater, and to some extent, metabolize them in their tissues. These mechanisms have potential important implications for the environment and human health. First, as plants constitute the basis of the terrestrial food chain, accumulation of toxic chemicals or their metabolites inside plant tissues may lead to contamination of animals and humans. Second, the recognition of the capability of plants to take up and metabolize contaminants has led to the development of a plant-based remediation technology, referred to as phytoremediation. Phytoremediation is defined as the use of higher plants for the removal of environmental contaminants from soil and groundwater. Although phytoremediation is conceptually attractive as a green, environmental-friendly technology, the metabolism of xenobiotic compounds by plants is often slow and incomplete, possibly resulting in the accumulation of toxic pollutants and/or their metabolites inside plant tissues. Without further detoxification, phytoremediation may result in pollution transfer, potentially threatening the food chain, and eventually humans. Gaining further knowledge about the fate of environmental contaminants inside plant tissues is therefore of paramount importance for conducting environmental risk assessment and enhancing the efficiency of phytoremediation applications. It's an attractive concept today to cultivate plants on contaminated lands, in order to combine the benefits of phytoremediation with plant-based biofuel production. Unlike conventional plant bioenergy production, plant biomass grown on marginal contaminated soil will not compete with land for food production. However, the effect of contaminants on the plant biomass and bioenergy feedstock yield have received little attention. Molecular biology techniques, such as high-throughput gene expression analysis, constitute powerful tools to understand the molecular bases of the plant metabolism and response to environmental contaminants. The objective of this thesis is to understand the physiological and transcriptional responses of two model plants, thale cress (Arabidopsis thaliana) and soybean (Glycine max), exposed to various classes of contaminants, including silver nanoparticles (AgNPs), pharmaceuticals (zanamivir - ZAN and oseltamivir phosphate - OSP), explosives (2,4,6-trinitrotoluene - TNT), and polychlorinated biphenyls (PCBs). Detection of the contaminants inside plants tissues was performed using advance analytical methods, including inductively-coupled plasma - mass spectrometry (ICP-MS), gas-chromatography - mass spectrometry (GC-MS), and liquid-chromatography (LC-MS). The effects of contaminants on plants were assessed by recording various plant metrics, including biomass, root and shoot length, and soybean production. The transcriptional response of plants to exposure to…p> Advisors/Committee Members: Van Aken, Benoit;, S.%22%29&pagesize-30">Suri, Rominder P.S., Eisenman, Sasha W., Tehrani, Rouzbeh Afsarmanesh, Strongin, Daniel R.;.

Subjects/Keywords: Environmental engineering;

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kaveh, R. (2014). TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,303672

Chicago Manual of Style (16^th Edition):

Kaveh, Rashid. “TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS.” 2014. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,303672.

MLA Handbook (7^th Edition):

Vancouver:

Kaveh R. TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS. [Internet] [Doctoral dissertation]. Temple University; 2014. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,303672.

Council of Science Editors:

Kaveh R. TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS. [Doctoral Dissertation]. Temple University; 2014. Available from: http://digital.library.temple.edu/u?/p245801coll10,303672

Temple University

8. Ranjbar Kolachaie, Sibia. USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE.

Degree: PhD, 2015, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,361879

► Civil Engineering p>Microalga-based technologies are introduced to provide a new generation of biofuels. The cultivation of microalgae in wastewater as the growth medium may offer… (more)

▼ Civil Engineering p>Microalga-based technologies are introduced to provide a new generation of biofuels. The cultivation of microalgae in wastewater as the growth medium may offer the dual benefit of wastewater treatment and sustainable biofuel production. The potential of microalgal biomass to be converted into biodiesel depends on the accumulation of lipids, mainly triacylglycerols. However, the presence of toxic contaminants in municipal or industrial wastewater could negatively affect the biomass growth and modify the pattern of lipid accumulation in algae cells. This research aims to evaluate the potential of cultivating microalgae in wastewater for the removal of selected contaminants and the production of biodiesel. The hypothesis underlying this work was that growing microalgae in the presence of contaminants, typically found in wastewater, may induce a stress response that potentially increases the lipid productivity and enhances the biofuel yield. This research explored the potential of microalgae to be used for the removal of wastewater pollutants while accumulating high concentrations of neutral lipid that can be converted into biodiesel. Physiological and transcriptional responses of two genera of green algae were observed in the presence of stresses induced by toxic metals in raw hydraulic fracturing flowback water and pharmaceuticals found in municipal wastewater. Two green algae, Dunaliella salina and Chlorella vulgaris, were selected based on the availability of genetic information, current trends in the alga industry, and specific growth requirement in hypersaline flowback water and municipal wastewater. The first part of this research focuses on the possibility of using the salt-tolerant green microalga, D. salina, for the removal of toxic metals from hydraulic fracturing flowback water. In the second part of this research, the freshwater green microalga, C. vulgaris, was exposed to a suite of pharmaceuticals, commonly found in municipal wastewater, and the effects on the biomass growth and lipid accumulation were evaluated. In Chapter 3, aqueous geochemical characteristics of hydraulic fracturing flowback water were determined. Metagenomic analysis was also used to characterize the microbial community structure of the water samples. This technique included DNA extraction, PCR amplification of genes for 16S and 18S ribosomal RNA, and pyrosequencing. Although the two flowback water samples were shown to have water property measures in the range of reported values in literature, they were significantly different from each other regarding water properties such as total dissolved solids and total organic carbon. They also had distinct microbial community structures. It was shown the flowback water samples contained mainly halophilic, anaerobic, and thermophilic species with a pattern that was expected to be seen in natural gas shale reservoirs. Chapter 4 covers the characterization of the effects of contaminants (toxic metals) in hydraulic fracturing flowback water on the biomass growth and cellular…p> Advisors/Committee Members: Van Aken, Benoit;, Pleshko, Nancy, Strongin, Daniel R., S.%22%29&pagesize-30">Suri, Rominder P.S., Tehrani, Rouzbeh Afsarmanesh;.

Subjects/Keywords: Environmental engineering; Engineering; Biology;

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ranjbar Kolachaie, S. (2015). USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,361879

Chicago Manual of Style (16^th Edition):

Ranjbar Kolachaie, Sibia. “USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE.” 2015. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,361879.

MLA Handbook (7^th Edition):

Ranjbar Kolachaie, Sibia. “USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE.” 2015. Web. 16 Jan 2021.

Vancouver:

Ranjbar Kolachaie S. USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE. [Internet] [Doctoral dissertation]. Temple University; 2015. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,361879.

Council of Science Editors:

Ranjbar Kolachaie S. USE OF MICROALGAE FOR WASTEWATER TREATMENT AND BIOFUEL PRODUCTION: EFFECTS OF ENVIRONMENTAL CONTAMINANTS ON THE CELLULAR RESPONSE. [Doctoral Dissertation]. Temple University; 2015. Available from: http://digital.library.temple.edu/u?/p245801coll10,361879

Temple University

9. Chatterjee, Sabyasachi. Calcite and Calcium Oxalate Sequestration of Heavy Metals.

Degree: PhD, 2009, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,50093

► Engineering p>Heavy metals like cadmium, lead and zinc pose a significant threat to human health and environment. Several factors such as pH, EH, organic matter… (more)

▼ Engineering p>Heavy metals like cadmium, lead and zinc pose a significant threat to human health and environment. Several factors such as pH, EH, organic matter and clay content of the soil affect the bioavailability of such heavy metals in the environment. The presence of several naturally occurring minerals such as calcite (calcium carbonate, CaCO3) and calcium oxalate (CaC2O4.) in the environment significantly influence the fate and transport of some of the heavy metal cations. Sequestration of heavy metals such as cadmium (Cd) and zinc (Zn) from solution by calcite has been clearly demonstrated in the literature. However, studies on heavy metal sequestration by calcite and calcium oxalate from a multi-metal environmental that represents real world situations are rare. In this contribution, column flow studies of Cd and Zn sequestration by calcite exposed to influent solutions saturated or non-saturated with calcite and containing either 1 mg/L of Cd, 1 mg/L of Zn or combined 1 mg/L of Zn and Cd, followed by desorption of the sequestered metals were conducted. Complementary scanning electron microscopy (SEM) coupled with electron dispersive x-ray spectroscopy (EDS) data were generated. Kinetic studies show that reaction rates of Cd and Zn with calcite are governed by a simple rate law with reaction orders of less than 1 (0.02 - 0.07) indicating at least mathematically, the occurrence of reactions that went to completion if the reaction orders did not change. When the influent solution contains a single cation, the rate of Zn removal from solution by calcite and calcium oxalate is greater than Cd removal rate. However in a multi-cation environment, cadmium removal rate was greater than zinc removal rate. MINTEQA2 a geochemical equilibrium speciation model was used to compute the equilibrium between the various species in the cation-calcite environment. Complimentary desorption studies and surface SEM/EDS analysis indicate that the removal of Cd and Zn from solution by calcite and calcium oxalate is probably due to precipitation/complexation reaction. The SEM and EDS results appear to confirm the presence of a precipitate on the mineral surface in the case of the influent solution containing Zn. The current research also examines the effect of citrate, a commonly present urinary tract species on calcium oxalate dissolution. The dissolution studies indicate that citrate solution is capable of dissolving sodium oxalate at high pH. The dissolution of calcium oxalate results in the release of heavy metals that were previously sequestered within the mineral. Results show that a greater percentage of zinc was removed than cadmium, from calcium oxalate due to its dissolution by citrate. p>Temple University – Thesesp> Advisors/Committee Members: Kargbo, David M., Boufadel, Michel C., Strongin, Daniel R., S.%22%29&pagesize-30">Suri, Rominder P.S., Hasan, Zameer U..

Subjects/Keywords: Engineering, Environmental; Chemistry, Physical; calcite; calcium oxate; dissolution; heavy metals; MINTEQA2; speciation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chatterjee, S. (2009). Calcite and Calcium Oxalate Sequestration of Heavy Metals. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,50093

Chicago Manual of Style (16^th Edition):

Chatterjee, Sabyasachi. “Calcite and Calcium Oxalate Sequestration of Heavy Metals.” 2009. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,50093.

MLA Handbook (7^th Edition):

Chatterjee, Sabyasachi. “Calcite and Calcium Oxalate Sequestration of Heavy Metals.” 2009. Web. 16 Jan 2021.

Vancouver:

Chatterjee S. Calcite and Calcium Oxalate Sequestration of Heavy Metals. [Internet] [Doctoral dissertation]. Temple University; 2009. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,50093.

Council of Science Editors:

Chatterjee S. Calcite and Calcium Oxalate Sequestration of Heavy Metals. [Doctoral Dissertation]. Temple University; 2009. Available from: http://digital.library.temple.edu/u?/p245801coll10,50093

Temple University

10. Zhang, Wei. LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems.

Degree: PhD, 2011, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,139476

► Civil Engineering p>The longitudinal solute transport modeling is critical in river and stream water quality management, control, and the mitigation of hazardous riverine spills. One… (more)

▼ Civil Engineering p>The longitudinal solute transport modeling is critical in river and stream water quality management, control, and the mitigation of hazardous riverine spills. One of the widely used "deadzone" model is the transient storage model (TSM). TSM is a significant improvement over the advection-dispersion model (ADM), but it cannot simulate the breakthrough curve (BTC) immediately after a large pool. Additionally, the calibration (parameterization) method is challenged by the non-identifiability which is common to all inverse modeling, and it seems TSM cannot be easily used as a predictive tool, more of an interpretive tool of solute transport, i.e., is the parameter set calibrated via inverse modeling transferable? Pools are fundamental stream morphology unit in streams with mixed bed materials in pool-riffle or pool-step sequences. Understanding of how a pool impacts the longitudinal solute transport is the first step towards improving current model such as TSM or developing new models. By introducing a dimensionless group, e= Q/(Dt W) (where, Q is the average volumetric flow rate; Dt is an average transverse dispersion coefficient; W is the channel flow width), derived from non-dimensionalization of the governing equations of one of the most rigorous 2-dimansional (2D) (depth-averaged) model, Mike21, this work presents an alternative way of longitudinal solute transport investigation. Using the 2D fully hydrodynamic Mike21, numerical experiments were conducted on hypothetical streams in this dissertation. Simulation study on hypothetical stream with pool reveals that a pool's effects on longitudinal solute transport are manifested by three aspects: boosting longitudinal spreading (concentration peak attenuation), causing a solute plume delay and increasing solute residence time. These effects fade like a "wake" as the solute plume moves downstream. e provides an insight into the physics of longitudinal transport; it outlines a relative transverse mixing intensity of a stream. The internal transport and mixing condition (including the secondary circulations) in a pool together with the pool's dimensions determine the pool's storage effects especially when e >>1. The BTCs downstream from a pool may be "heavy tailed" (i.e., have enormously slow decaying rate) which cannot be modeled by the TSM. Results also suggest that the falling limb of a BTC more accurately characterizes the pool's storage effects because the corresponding solute has more chance to sample the entire storage area. n a more fundamental perspective, the predictive ability of inverse modeling parameterized model is discussed and conclusion is made about the role of a stream/river system's nonlinearity in determining the predictability; a misleading mis-nomenclature in TSM application is also demonstrated with a numerical experiment. p>Temple University – Thesesp> Advisors/Committee Members: Boufadel, Michel C., Kargbo, David M., Khoury, Naji N. (Naji Najib), Ryan, Robert, S.%22%29&pagesize-30">Suri, Rominder P.S., Udo-Inyang, Philip D., Darvish, Kurosh.

Subjects/Keywords: Civil Engineering; Environmental Engineering; longitudinal dispersion; numerical simulation; open channel flow; parameter-transferring; solute transport; surface storage

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, W. (2011). LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,139476

Chicago Manual of Style (16^th Edition):

Zhang, Wei. “LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems.” 2011. Doctoral Dissertation, Temple University. Accessed January 16, 2021. http://digital.library.temple.edu/u?/p245801coll10,139476.

MLA Handbook (7^th Edition):

Vancouver:

Zhang W. LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems. [Internet] [Doctoral dissertation]. Temple University; 2011. [cited 2021 Jan 16]. Available from: http://digital.library.temple.edu/u?/p245801coll10,139476.

Council of Science Editors:

Zhang W. LONGITUDINAL SOLUTE TRANSPORT IN OPEN-CHANNEL FLOW - A Numerical Simulation Study on Longitudinal Dispersion, Surface Storage Effects, Transverse Mixing, Uncertainties and Parameter-Transferring Problems. [Doctoral Dissertation]. Temple University; 2011. Available from: http://digital.library.temple.edu/u?/p245801coll10,139476

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