Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for +publisher:"NSYSU" +contributor:("Long-chem Wu"). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


NSYSU

1. Peng, Tzu-chin. Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater.

Degree: Master, Environmental Engineering, 2008, NSYSU

This study was to investigate the reaction behavior of nanoscale [Fe3O4]MgO and trichlorothylene (TCE) in aqueous solutions. In addition, effects of environmental variables on TCE removal from a simulated groundwater system were investigated. At first, two types of metal oxide composites containing both nanoscale Fe3O4 and MgO (designated H-[Fe3O4]MgO and S-[Fe3O4]MgO, respectively) were prepared. Then they were characterized and verified by various apparatuses and methods including X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, specific surface area measurements. Since the substrate of S-[Fe3O4]MgO with a molar ratio of Fe3O4/MgO = 1/5 (designated S1/5-[Fe3O4]MgO) had a much greater specific surface area than that of the substrate of S-[Fe3O4]MgO with a molar ratio of Fe3O4/MgO = 5/5 (designated S5/5-[Fe3O4]MgO), S1/5-[Fe3O4]MgO was selected as the model composite for the treatment of TCE in this study. Results of batch tests showed that S1/5-[Fe3O4]MgO had the best treatment performance among various metal oxides and their composites. For an initial TCE concentration of 10 mg/L, however, only 45% removal could be achieved by 5.0 g/L of dispersed S1/5-[Fe3O4]MgO. Nevertheless, a greater removal efficiency could be obtained for a higher initial TCE concentration in a simulated groundwater system. Test results also showed that a lower temperature and higher pH would retard the relevant reaction rates in TCE removal. In the simulated groundwater system employed in this work, the existence of humic acid (< 10 mg/L) played an insignificant role in affecting the TCE removal. Analysis of TCE adsorption on S1/5-[Fe3O4]MgO in aqueous solution indicated that a Langmuir-type of chemical adsorption would have a better fit. Results of gas chromatography further showed the existence of small to trace amounts of TCE degradation products including cis-1,2-dichloroethylene, trans-1,2-dichloroethylene, vinyl chloride, ethene and methane, etc. Thus, the relevant reaction mechanisms and pathways for the destructive adsorption were proposed. Advisors/Committee Members: Chin-jen Lu (chair), Hsiu-wei Chen (chair), Long-chem Wu (chair), Gordon C. C. Yang (committee member).

Subjects/Keywords: destructive adsorption; simulated groundwater; trichlorothylene; nanoscale; [Fe3O4]MgO

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Peng, T. (2008). Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0214108-135138

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):

Peng, Tzu-chin. “Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater.” 2008. Thesis, NSYSU. Accessed February 21, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0214108-135138.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Peng, Tzu-chin. “Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater.” 2008. Web. 21 Feb 2019.

Vancouver:

Peng T. Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater. [Internet] [Thesis]. NSYSU; 2008. [cited 2019 Feb 21]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0214108-135138.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Peng T. Reaction Behavior of Nanoscale [Fe3O4]MgO and Trichlorothylene in the Groundwater. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0214108-135138

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.