Award Date
1-1-2000
Degree Type
Thesis
Degree Name
Master of Engineering (ME)
Department
Civil and Environmental Engineering
First Committee Member
Jacimaria Ramos Batista
Number of Pages
212
Abstract
This thesis investigated the feasibility of using a membrane-immobilized biofilm reactor to remove perchlorate from waters. Perchlorate (ClO4 -) is easily reduced under anaerobic conditions to harmless chloride (Cl-). In this system, the perchlorate-contaminated water is physically separated from the biofilm by the membrane. Perchlorate diffuses, without the need of external energy, to the degrading biofilm, thereby minimizing the contamination of the product water by microbes. A mixed microbial culture capable biologically of reducing perchlorate was enriched and attached to the membrane surface. The results demonstrated the feasibility of using a membrane-immobilized biofilm reactor to remove perchlorate from waters. In addition, the results showed that nitrate and salinity negatively affect perchlorate biodegradation, while sulfate does not have a major effect on perchlorate biodegradation.
Keywords
Biofilm; Immobilized; Membrane; Perchlorate; Removal; Waters
Controlled Subject
Environmental engineering; Municipal engineering; Sanitary engineering
File Format
File Size
5785.6 KB
Degree Grantor
University of Nevada, Las Vegas
Language
English
Permissions
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Repository Citation
Liu, Jian, "The removal of perchlorate from waters by a membrane-immobilized biofilm" (2000). UNLV Retrospective Theses & Dissertations. 1216.
http://dx.doi.org/10.25669/7d9k-byo4
Rights
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