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A Biogeochemical Evaluation of Disposal Options

by Robert P. Gambrell, Louisiana State Univ, Cent for, Wetland Resources, Baton Rouge, LA, USA,
William H. Patrick, Jr., Louisiana State Univ, Cent for, Wetland Resources, Baton Rouge, LA, USA,
Robert M. Engler, Louisiana State Univ, Cent for, Wetland Resources, Baton Rouge, LA, USA,



Document Type: Proceeding Paper

Part of: Dredging and Dredged Material Disposal

Abstract:

This paper briefly reviews some of the factors that should be considered in selecting an environmentally sound disposal method for contaminated sediments on the basis of the biogeochemical properties of the dredged material and the disposal site. Many of the processes regulating the transport and availability of toxic materials are strongly affected by the physical, chemical, and biological characteristics of the dredged material. Biological and chemical oxidation-reduction conditions of sediment/water systems and dredged sediments play a major role in influencing the immobilization/mobilization processes. These and other physical and chemical properties of dredged materials that affect contaminant mobility can be substantially altered depending on the disposal method selected.

Subject Headings: Material properties | Dredged materials | Chemical properties | Sediment | Chemical processes | Biological processes | Materials processing

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