Research Mentor(s)

Ruth Sofield, Benjamin Maki

Affiliated Department

Environmental Sciences

Sort Order

29

Start Date

19-5-2016 12:00 PM

End Date

19-5-2016 3:00 PM

Keywords

enic, sediment, activated carbon, sorption

Document Type

Event

Abstract

Arsenic from anthropogenic sources and geological weathering is a contaminant of concern in sediment environments of Washington State. Legacy contamination can be attributed to extensive application of lead-arsenate pesticides and industrial smelting processes. Arsenic contamination of sediment provides an exposure pathway into groundwater and can potentially contaminate drinking water. Metal bioavailability of contaminated sediment is greatly influenced by the presence of acid volatile sulfides and organic carbon. Activated carbon (AC) has been shown to be an effective in-situ treatment for decreasing bioavailability of organic contaminants in sediment. Less is known about the applicability of AC to decrease metal mobility in the sediment environment.

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May 19th, 12:00 PM May 19th, 3:00 PM

Kinetic and equilibrium sorption modeling of arsenite and arsenate onto Lake Whatcom sediments and activated carbon.

Environmental Sciences

Arsenic from anthropogenic sources and geological weathering is a contaminant of concern in sediment environments of Washington State. Legacy contamination can be attributed to extensive application of lead-arsenate pesticides and industrial smelting processes. Arsenic contamination of sediment provides an exposure pathway into groundwater and can potentially contaminate drinking water. Metal bioavailability of contaminated sediment is greatly influenced by the presence of acid volatile sulfides and organic carbon. Activated carbon (AC) has been shown to be an effective in-situ treatment for decreasing bioavailability of organic contaminants in sediment. Less is known about the applicability of AC to decrease metal mobility in the sediment environment.