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The impact of ethanol blend releases to the aesthetic quality of groundwater and the indigenous microbial community

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dc.contributor.advisor Alvarez, Pedro J.
dc.creator Ma, Jie
dc.date.accessioned 2012-07-03T22:49:57Z
dc.date.available 2012-07-03T22:49:57Z
dc.date.created 2011-05
dc.date.issued 2011
dc.identifier.uri http://hdl.handle.net/1911/64448
dc.description.abstract A pilot-scale aquifer system was used to evaluate groundwater quality impacts from a continuous release of an aqueous 10% v:v ethanol solution mixed with benzene and toluene (50 mg/L each). The geochemical footprints (methane, volatile fatty acids (VFAs), pH, oxidation reduction potential (ORP), dissolved oxygen (DO) and temperature) were monitored over 11 months. The accumulation ofVFAs (particularly butyric acid) during the summer exceeded the secondary maximum contaminant level value for odor, which represents a previously unreported aesthetic impact. Temperature variations (3.9 to 30.0 °C) significantly affected microbial activities, and a strong correlation was observed between groundwater temperature and CH4/VFAs generation (p < 0.05). Quantitative real-time PCR (qPCR) analysis showed that ethanol blend increased the microbial population and enriched the fermentative groups for acetogenesis and methanogenesis.
dc.format.extent 44 pp
dc.format.mimetype application/pdf
dc.language.iso eng
dc.title The impact of ethanol blend releases to the aesthetic quality of groundwater and the indigenous microbial community
dc.identifier.digital MaJ
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Civil and Environmental Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Ma, Jie. (2011) "The impact of ethanol blend releases to the aesthetic quality of groundwater and the indigenous microbial community." Masters Thesis, Rice University. http://hdl.handle.net/1911/64448.

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