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Title: Waste Derived Sorbents and Their Potential Roles in Heavy Metal Remediation Applications
Authors: Chiang, Yi Wai ×
Santos, Rafael
Ghyselbrecht, Karel
Van Gerven, Tom
Cappuyns, Valérie
Martens, Johan
Meesschaert, Boudewijn
Issue Date: 23-Apr-2013
Series Title: E3S Web of Conferences vol:1 (2013)
Conference: 16th International Conference on Heavy Metals in the Environment location:Rome, Italy date:23-27 September 2012
Article number: 25003
Abstract: Inorganic waste materials that have the suitable inherent characteristics could be used as precursors for the synthesis of micro- and mesoporous materials, which present great potential to be re-utilized as sorbent materials for heavy metal remediation. Three inorganic waste materials were studied in the present work: inherently formed water treatment residuals (WTRs) from an integrated drinking water/wastewater treatment plant, and fly ash and bottom ash samples from a municipal solid waste incinerator (MSWI). These wastes were converted into three sorbent materials: ferrihydrite-like materials derived from drying of WTRs, hydroxyapatite-like material derived from ultrasound assisted synthesis of MSWI fly ash with phosphoric acid solution, and a zeolitic material derived from alkaline hydrothermal conversion of MSWI bottom ash. The performance of these materials, as well as their equivalent commercially available counterparts, was assessed for the adsorption of multiple heavy metals (As, Cd, Co, Ni, Pb, Zn) from synthetic solutions, contaminated sediments and surface waters; and satisfactory results were obtained. In addition, it was observed that the combination of sorbents into sorbent mixtures enhanced the performance levels and, where applicable, stabilized inherently mobile contaminants from the waste derived sorbents.
URI: 
ISSN: 2267-1242
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Bioengineering Technology TC @ Kulab
Technologiecluster Bioengineering Technologie
Center for Research on Economic Markets and their Environments - HUB-EHSAL
Centre for Surface Chemistry and Catalysis
Division of Geology
Microbial and Molecular Systems - miscellaneous
Process Engineering for Sustainable Systems Section
× corresponding author

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