Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/16477
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Type: Journal article
Title: An inter-laboratory study to test the ability of amendments to reduce the availability of Cd, Pb, and Zn in situ
Author: Brown, S.
Christensen, B.
Lombi, E.
McLaughlin, M.
McGrath, S.
Colpaert, J.
Vangronsveld, J.
Citation: Environmental Pollution, 2005; 138(1):34-45
Publisher: Elsevier Sci Ltd
Issue Date: 2005
ISSN: 0269-7491
1873-6424
Statement of
Responsibility: 
Sally Brown, Barbara Christensen, Enzo Lombi, Mike McLaughlin, Steve McGrath, Jan Colpaert and Jaco Vangronsveld
Abstract: An international inter-laboratory research program investigated the effectiveness of in situ remediation of soils contaminated by cadmium, lead and zinc, measuring changes in soil and soil solution chemistry, plants and soil microbiota. A common soil, from mine wastes in Jasper County MO, was used. The soil was pH 5.9, had low organic matter (1.2 g kg−1 C) and total Cd, Pb, and Zn concentrations of 92, 5022, and 18 532 mg kg−1, respectively. Amendments included lime, phosphorus (P), red mud (RM), cyclonic ashes (CA), biosolids (BIO), and water treatment residuals (WTR). Both soil solution and NH4NO3 extractable metals were decreased by all treatments. Phytotoxicity of metals was reduced, with plants grown in P treatments having the highest yields and lowest metal concentration (0.5, 7.2 and 406 mg kg−1 Cd, Pb, and Zn). Response of soil micro-organisms was similar to plant responses. Phosphorus addition reduced the physiologically based extraction test Pb from 84% of total Pb extracted in the untreated soil to 34.1%. Addition of phosphorus to Pb, Zn and Cd contaminated mine waste was able to reduce metal toxicity for a range of biological endpoints. Addition of phosphorus to Pb, Zn and Cd contaminated mine waste was able to reduce metal toxicity for a range of biological endpoints.
Keywords: In situ remediation; Pb mine wastes; Phosphorus; Bioavailability
Description: Copyright © 2005 Elsevier Ltd All rights reserved.
RMID: 0020050848
DOI: 10.1016/j.envpol.2005.02.020
Description (link): http://www.elsevier.com/wps/find/journaldescription.cws_home/405856/description#description
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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