SOLUBLE SALTS REDUCTION AND METALS BEHAVIOR OF DREDGED SEDIMENT FOR REUSE IN HIGHWAY SLOPE APPLICATIONS

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dc.contributor.advisorDavis, Allen P.en_US
dc.contributor.advisorAydilek, Ahmet H.en_US
dc.contributor.authorHuffert, Michelle Ben_US
dc.contributor.departmentCivil Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2019-10-02T05:32:23Z
dc.date.available2019-10-02T05:32:23Z
dc.date.issued2019en_US
dc.description.abstractWaterways are dredged routinely to maintain navigation channels, resulting in large quantities of dredged materials (DM) that require disposal. This study examines the innovative reuse of DM as a topsoil alternative in highway slopes. The dredged material met Maryland Department of Transportation, State Highway Administration (MDOT SHA) topsoil requirements for pH, organic matter, and particle size distribution, and required 122 cm (48 inches) of rainwater to leach soluble salts to below limits. Column leach tests were performed on DM and topsoil to evaluate metal leaching behavior; extractions were performed to determine total and potentially mobile metals content. DM leached metals concentrations below drinking water maximum contaminant levels (MCLs) for >95% of the samples tested, and passed a toxicity characteristic leaching procedure (TCLP). Extraction data showed higher total concentrations of arsenic, chromium, and lead as compared to topsoil, but similar concentrations in the EDTA-extracted fractions indicating that metals are strongly bound.en_US
dc.identifierhttps://doi.org/10.13016/m3av-oleb
dc.identifier.urihttp://hdl.handle.net/1903/25181
dc.language.isoenen_US
dc.subject.pqcontrolledEnvironmental engineeringen_US
dc.subject.pqcontrolledCivil engineeringen_US
dc.subject.pquncontrolledDredged sedimenten_US
dc.subject.pquncontrolledinnovative reuseen_US
dc.subject.pquncontrolledmetalsen_US
dc.subject.pquncontrolledsalinityen_US
dc.subject.pquncontrolledtopsoilen_US
dc.titleSOLUBLE SALTS REDUCTION AND METALS BEHAVIOR OF DREDGED SEDIMENT FOR REUSE IN HIGHWAY SLOPE APPLICATIONSen_US
dc.typeThesisen_US

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