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dc.contributor.authorSanders, James P.
dc.contributor.authorAndrade, Natasha A.
dc.contributor.authorMenzie, Charles A.
dc.contributor.authorAmos, C. Bennett
dc.contributor.authorGilmour, Cynthia C.
dc.contributor.authorHenry, Elizabeth A.
dc.contributor.authorBrown, Steven S.
dc.contributor.authorGhosh, Upal
dc.date.accessioned2018-07-02T15:30:11Z
dc.date.available2018-07-02T15:30:11Z
dc.date.issuedJune 5, 2018
dc.description.abstractIn situ amendment of sediments with highly sorbent materials like activated carbon (AC) is an increasingly viable strategy to reduce the bioavailability of persistent, sediment‐associated contaminants to benthic communities. Because in situ sediment remediation is an emerging strategy, much remains to be learned about the field conditions under which amendments can be effective, the resilience of amendment materials toward extreme weather conditions, and the optimal design of engineered applications. Here we report the results of a multi‐year, pilot‐scale field investigation designed to measure the persistence and efficacy of AC amendments to reduce the bioavailability of polychlorinated biphenyls (PCBs) in an intertidal Phragmites marsh. The amendments tested were granular AC (GAC), GAC with a layer of sand, and a pelletized fine AC. Key metrics presented include vertically‐resolved black carbon concentrations in sediment and PCB concentrations in sediment, porewater, and several invertebrate species. The results demonstrate that all three amendments withstood Hurricane Sandy and remained in place for the duration of the study, successfully reducing porewater PCB concentrations by 34–97%. Reductions in invertebrate bioaccumulation were observed in all amendment scenarios, with pelletized fine AC producing the most pronounced effect. Our findings support the use of engineered AC amendments in intertidal marshes, and can be used to inform amendment design, delivery, and monitoring at other contaminated sediment sites.en_US
dc.description.urihttps://setac.onlinelibrary.wiley.com/action/showCitFormats?doi=10.1002%2Fetc.4186en_US
dc.format.extent33 pagesen_US
dc.genrejournal articles postprintsen_US
dc.identifierdoi:10.13016/M2251FP16
dc.identifier.citationSanders, J. P., Andrade, N. A., Menzie, C. A., Amos, C. B., Gilmour, C. C., Henry, E. A., Brown, S. S. and Ghosh, U. (2018), Persistent Reductions in the Bioavailability of PCBs at a Tidally Inundated Phragmites australis Marsh Amended with Activated Carbon. Environ Toxicol Chem. Accepted Author Manuscript. . doi:10.1002/etc.4186en_US
dc.identifier.uri10.1002/etc.4186
dc.identifier.urihttp://hdl.handle.net/11603/10951
dc.language.isoen_USen_US
dc.publisherWileyen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Chemical, Biochemical & Environmental Engineering Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please contact the author.
dc.subjectpolychlorinated biphenyls (PCBs)en_US
dc.subjectamendment of sediments with activated carbon (AC)en_US
dc.subjectpilot‐scale field investigationen_US
dc.subjectreducing porewater PCB concentrationsen_US
dc.subjectintertidal Phragmites marshesen_US
dc.titlePersistent Reductions in the Bioavailability of PCBs at a Tidally Inundated Phragmites australis Marsh Amended with Activated Carbonen_US
dc.typeTexten_US


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