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Coupling Bioflocculation of Dehalococcoides to High-Dechlorination Rates for Ex situ and In situ Bioremediation


Abstract Bioremediation of trichloroethene (TCE) using Dehalococcoides mccartyi-containing microbial cultures is a recognized and successful remediation technology. Our work with an upflow anaerobic sludge blanket (UASB) reactor has shown that high-performance, fast-rate dechlorination of TCE can be achieved by promoting bioflocculation of Dehalococcoides mccartyi-containing cultures. The bioreactor achieved high maximum conversion rates of 1.63 ± 0.012 mmol Cl- Lculture-1 h-1 at an HRT of 3.6 hours and >97% dechlorination of TCE to ethene while continuously fed 2 mM TCE. The UASB generated bioflocs from a microbially heterogeneous dechlorinating culture and produced Dehalococcoides mccartyi densities of 1.73x10-13 cells Lculture-1 indicating tha... (more)
Created Date 2015
Contributor Fajardo-Williams, Devyn J. (Author) / Krajmalnik-Brown, Rosa (Advisor) / Torres, Cesar I (Committee member) / Popat, Sudeep C (Committee member) / Arizona State University (Publisher)
Subject Environmental engineering
Type Masters Thesis
Extent 39 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Masters Thesis Engineering 2015
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis