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Concurrent reduction of trichloroethylene and perchlorate in continuous flow-through soil columns


Abstract The objective of this study was to evaluate possible bioremediation strategy for aerobic aquifers by combining ZVI chemical reduction and microbial reductive dechlorination for TCE and ClO4-. To achieve this objective, continuous flow-through soil columns were used to test the hypothesis that bioaugmentation with dechlorinating enrichment cultures downstream of the ZVI injection can lead to complete reduction of TCE and ClO4- in aerobic aquifers. We obtained soil and groundwater from a Superfund site in Arizona. The experiments consisted of 205 cm3 columns packed with soil and ZVI, which fed 1025 cm3 columns packed with soil, biostimulated with fermentable substrates and bioaugmented. Aerobic groundwater was pumped through the ZVI columns.... (more)
Created Date 2019
Contributor Rao, Shefali (Author) / Krajmalnik-Brown, Rosa (Advisor) / Delgado, Anca G. (Advisor) / LaPat-Polasko, Laurie (Committee member) / Arizona State University (Publisher)
Subject Environmental engineering
Type Masters Thesis
Extent 52 pages
Language English
Copyright
Note Masters Thesis Civil, Environmental and Sustainable Engineering 2019
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis