Award Date
1-1-2000
Degree Type
Thesis
Degree Name
Master of Science (MS)
Department
Civil and Environmental Engineering
First Committee Member
Jacimaria Ramos Batista
Number of Pages
238
Abstract
This thesis investigates the feasibility of using several types of ion-exchange resins to remove perchlorate from waters. The capability of the resins to remove perchlorate, as well as their regeneration efficiency, were evaluated using both synthetic solutions and perchlorate-contaminated water from the Las Vegas Valley. For synthetic solutions, styrenic strong base resins showed high perchlorate removal efficiency but regeneration efficiency was low. Acrylic strong-base resins showed satisfactory perchlorate removal, but they regenerate better than the styrenic counterpart. Acrylic weak base resin showed satisfactory perchlorate removal efficiency and very high regeneration efficiency when regenerated with NaCl or caustic solutions. High concentrations of humic substances and sulfate, present in the perchlorate-contaminated groundwater, significantly affected perchlorate removal by the majority of the resins tested. Despite the affinity of the tested resins for sulfate, perchlorate was removed from the water by pushing sulfate out of the resin.
Keywords
Exchange; Ion; Perchlorate; Removal; Resins; Waters
Controlled Subject
Environmental engineering
File Format
File Size
6021.12 KB
Degree Grantor
University of Nevada, Las Vegas
Language
English
Permissions
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Repository Citation
Vieira, Adriano Rosa, "The removal of perchlorate from waters using ion-exchange resins" (2000). UNLV Retrospective Theses & Dissertations. 1175.
http://dx.doi.org/10.25669/j385-oza3
Rights
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