resuspension of sediment, a new approach for remediation of contaminated sediment论文.pdf

Environmental Pollution 213 (2016) 63e75
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Resuspension of sediment, a new approach for remediation of
contaminated sediment*
*
Mehdi Pourabadehei, Catherine N. Mulligan
Department of Building, Civil and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. W., Montreal, Qc, H3G 1M8, Canada
article info abstract
Article history: Natural events and anthropogenic activities are the reasons of undesirable resuspension of contaminated
Received 8 September 2015 sediments in aquatic environment. Uncontrolled resuspension could remobilize weakly bound heavy
Received in revised form metals into overlying water and pose a potential risk to aquatic ecosystem. Shallow harbours, with
25 January 2016
contaminated sediments are subjected to the risk of uncontrolled resuspension. Remediation of sedi-
Accepted 26 January 2016
ments in these areas cannot be performed by conventional in situ methods (. capping with or without
Available online 12 February 2016
reactive amendment). Ex situ remediation also requires dredging of sediment, which could increase the
risk of spreading contaminants. Alternatively, the resuspension technique was introduced to address
Keywords: fi
Resuspension