Master of Engineering (ME)
Civil and Environmental Engineering
First Committee Member
David E. James
Number of Pages
This thesis investigates the feasibility of combining ion exchange and biological reduction to remove perchlorate contamination from waters and eliminate it from the environment. Perchlorate can be removed from water by ion exchange. However, regeneration of these resins creates a waste stream, concentrating the perchlorate and other components in the regenerant solution. This waste stream can then be channeled to a biological reactor where perchlorate is reduced by microorganisms. Perchlorate-reducing microorganisms are ubiquitous in nature, yet biological treatment of these waste streams would expose these microorganisms to high salt or ammonium concentrations and high perchlorate levels. In studying the impact of these three parameters on a mixed culture of perchlorate reducers, results showed high concentrations of salt, ammonium and perchlorate negatively affected the biological reduction of perchlorate; however, possible acclimation of these microorganisms to high ammonium and perchlorate levels may be possible.
Biological; Contaminated; Generated; Perchlorate; Remediation; Solutions; Treatment; Waste; Waters
Environmental engineering; Environmental sciences
University of Nevada, Las Vegas
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Gingras, Tina Mary, "Biological treatment of waste solutions generated from the remediation of perchlorate-contaminated waters" (2002). UNLV Retrospective Theses & Dissertations. 1483.