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REMOVAL OF MICROPOLLUTANTS IN BIOFILTERS: HYDRODYNAMIC EFFECTS ON BIOTRANSFORMATION RATES

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dc.contributor.authorCarpenter, Corey
dc.contributor.chairHelbling, Damian E
dc.contributor.committeeMemberWeber-Shirk, Monroe
dc.contributor.committeeMemberRichardson, Ruth E.
dc.date.accessioned2017-04-04T20:28:40Z
dc.date.available2017-12-08T07:00:33Z
dc.date.issued2017-01-30
dc.description.abstractGlobal water resources contain a variety of organic chemicals, including pharmaceuticals, personal care products, and pesticides at trace concentrations. This study investigated the application of biofiltration for the removal of these so-called micropollutants from drinking water resources. The objective of this work was to examine how hydrodynamics influence biotransformation rates in biofiltration processes. Measurements included biomass concentration, depths of the biological zone, and removal rates of 29 micropollutants at environmentally-relevant concentrations in bench-scale biofiltration columns operated under three distinct hydrodynamic regimes. Higher superficial velocities led to less concentrated surface biomass but a deeper biological zone and more total biomass. Eleven micropollutants underwent biotic removal and second-order rate constants were not significantly different between hydrodynamic regimes for each micropollutant. Of these micropollutants, five had significantly greater second-order rate constants at deeper biofilter depths. This work is an important step in improving our understanding of how hydrodynamics influence drinking water biofiltration performance.
dc.identifier.doihttps://doi.org/10.7298/X45B00DN
dc.identifier.otherCarpenter_cornell_0058O_10018
dc.identifier.otherhttp://dissertations.umi.com/cornell:10018
dc.identifier.otherbibid: 9906153
dc.identifier.urihttps://hdl.handle.net/1813/47906
dc.language.isoen_US
dc.subjectEnvironmental engineering
dc.subjectBiofiltration
dc.subjectMicropollutants
dc.subjectTrace organic contaminants
dc.titleREMOVAL OF MICROPOLLUTANTS IN BIOFILTERS: HYDRODYNAMIC EFFECTS ON BIOTRANSFORMATION RATES
dc.typedissertation or thesis
dcterms.licensehttps://hdl.handle.net/1813/59810
thesis.degree.disciplineCivil and Environmental Engineering
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Civil and Environmental Engineering

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