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The biodegradation of valeric, butyric, propionic and acetic acids in anoxic, subsurface, soil environments

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dc.contributor.authorSandberg, Scott A.en
dc.contributor.committeechairNovak, John T.en
dc.contributor.committeememberBoardman, Gregory D.en
dc.contributor.committeememberHoehn, Robert C.en
dc.contributor.departmentEnvironmental Sciences and Engineeringen
dc.date.accessioned2015-05-08T19:38:39Zen
dc.date.available2015-05-08T19:38:39Zen
dc.date.issued1988en
dc.description.abstractThe biodegradation potential of two subsurface soils was characterized by monitoring the biodegradation of short-chain fatty acids in anaerobic soil microcosms. Valerate, butyrate, propionate, and acetate concentrations were monitored independently using separate microcosms. The effect of sulfate on the microbial communities was also investigated. One soil, from Newport News, Virginia, consisted of a sandy loam collected beneath a low lying, grassy field. The microcosms containing the soil were characterized by: a neutral pH, the utilization of sulfate with concomitant precipitation of iron sulfide , an increase in the degradation rate as a result of sulfate addition, and a production of bicarbonate directly related to acid mineralization. Another soil, from Blacksburg, Virginia, consisted of a silty-clay collected beneath a wooded hilltop. Microcosms containing the soil were characterized by : a pH between 4 and 5, little sulfate utilization with no visible iron sulfide precipitation, an increase in degradation rates upon the addition of sulfate, and little or no accumulation of bicarbonate. These results indicate that short-chain fatty acids are readily degraded in subsurface anaerobic soil systems and that these rates are dependent on the availability of electron acceptors and the diversity of the indigenous population.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 83 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/52069en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 19782742en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1988.S253en
dc.subject.lcshGroundwater -- Qualityen
dc.subject.lcshSoil acidityen
dc.titleThe biodegradation of valeric, butyric, propionic and acetic acids in anoxic, subsurface, soil environmentsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEnvironmental Sciences and Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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