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Title: Strategic selection of an optimal sorbent mixture for in-situ remediation of heavy metal contaminated sediments: framework and case study
Authors: Chiang, Yi Wai ×
Santos, Rafael
Ghyselbrecht, Karel
Cappuyns, Valérie
Martens, Johan
Swennen, Rudy
Van Gerven, Tom
Meesschaert, Boudewijn #
Issue Date: 30-Aug-2012
Series Title: Journal of Environmental Management vol:105 pages:1-11
Abstract: Aquatic sediments contaminated with heavy metals originating from mining and metallurgical activities pose significant risk to the environment and human health. These sediments not only act as a sink for heavy metals, but can also constitute a secondary source of heavy metal contamination. A variety of sorbent materials has demonstrated the potential to immobilize heavy metals. However, the complexity of multi-element contamination makes choosing the appropriate sorbent mixture and application dosage highly challenging. In this paper, a strategic framework is designed to systematically address the development of an in-situ sediment remediation solution through Assessment, Feasibility and Performance studies. The decision making tools and the experimental procedures needed to identify optimum sorbent mixtures are detailed. Particular emphasis is given to the utilization and combination of commercially available and waste-derived sorbents to enhance the sustainability of the solution. A specific case study for a contaminated sediment site in Northern Belgium with high levels of As, Cd, Pb and Zn originating from historical non-ferrous smelting is presented. The proposed framework is utilized to achieve the required remediation targets and to meet the imposed regulations on material application in natural environments.
URI: 
ISSN: 0301-4797
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Process Engineering for Sustainable Systems Section
Microbial and Molecular Systems - miscellaneous
Division of Geology
Centre for Surface Chemistry and Catalysis
Technologiecluster Bioengineering Technologie
Bioengineering Technology TC, Technology Campus Ostend
Research Centre for Economics and Corporate Sustainability, Campus Brussels
Faculty of Economics and Business (FEB) - miscellaneous
× corresponding author
# (joint) last author

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