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Type: Journal article
Title: The influence of sewage sludge properties on sludge-borne metal availability
Author: Merrington, G.
Oliver, I.
Smernik, R.
McLaughlin, M.
Citation: Advances in Environmental Research, 2003; 8(1):21-36
Publisher: Elsevier Sci Ltd
Issue Date: 2003
ISSN: 1093-0191
Statement of
G. Merrington, I. Oliver, R. J. Smernik and M. J. McLaughlin
Abstract: With the advent of more stringent controls on wastewater treatment, sewage sludge production in Europe and many parts of the world is increasing. With this increase comes the problem of sludge disposal, and recycling to land arguably offers an economically and environmentally sustainable option. However, a major limitation of sewage sludge reuse is the potential release of heavy metals from the sludge and heavy metal accumulation to toxic levels in topsoils. The properties of the sludge play a crucial role in determining the initial release and subsequent availability of heavy metals in amended soils. Bioavailable forms of heavy metals in recently amended soils are most likely to be those that are bioavailable in the sewage sludge. In this paper, published research on the importance of sewage sludge characteristics on metal release and bioavailability will be reviewed and contrasted with original research. A selection of sludges from around Australia has been collected for this purpose. Through the use of incubation studies, isotope dilution techniques, ion-selective electrode measurements and 13C-NMR spectroscopy, the importance of a range of sludge properties on heavy metal behaviour in sludges and sludge-amended soils is addressed.
Keywords: Sewage sludge; heavy metals; availability; retention
Description: Copyright © 2002 Elsevier Ltd. All rights reserved.
RMID: 0020031415
DOI: 10.1016/S1093-0191(02)00139-9
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Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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