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

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dc.contributor.advisorAlvarez, Pedro J.
dc.creatorMa, Jie
dc.date.accessioned2012-07-03T22:49:57Z
dc.date.available2012-07-03T22:49:57Z
dc.date.created2011-05
dc.date.issued2011
dc.description.abstractA 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.extent44 ppen_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS C.E. 2011 MA
dc.identifier.citationMa, Jie. "The impact of ethanol blend releases to the aesthetic quality of groundwater and the indigenous microbial community." (2011) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/64448">https://hdl.handle.net/1911/64448</a>.
dc.identifier.digitalMaJen_US
dc.identifier.urihttps://hdl.handle.net/1911/64448
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectCivil engineering
dc.subjectEnvironmental engineering
dc.titleThe impact of ethanol blend releases to the aesthetic quality of groundwater and the indigenous microbial community
dc.typeThesis
dc.type.materialText
thesis.degree.departmentChemical and Biomolecular Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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