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Using phosphorus and zeolite to immobilize lead in two contrasting contaminated urban soils
Li JH1,2; Jia CJ1; Lu Y1; Shim H3
2016
Source PublicationPolish Journal of Environmental Studies
ISSN1230-1485
Volume25Issue:4Pages:1589-1594
Abstract

Lead (Pb) contamination of urban soil is a threat to human health, and reducing the risk of Pb-contaminated soil is a continuing international concern. Soil stabilization technique has been considered as a promising remediation technique to facilitate the immobilization of Pb in soil. The purpose of this study was to evaluate the effects of different amendments, including H3PO4, Ca(H2PO4)2, H3PO4+Ca(H2PO4)2, and zeolite on Pb levels in two naturally contaminated urban soils. Pb speciation and bioavailability was evaluated by the sequential extraction test (SET) and the toxicity characteristic leaching procedure (TCLP) after a two-month incubation. The application of phosphorus amendments significantly reduced the TCLP-Pb concentration in two soil types and the SET-Pb in Soil 1 (alkaline but with high Pb level), whereas the zeolite amendment diminished the SET-Pb in two soil types and the TCLP-Pb in Soil 1. Nevertheless, regardless of the soil type, the application of phosphorus amendments resulted in a significant increase of residual Pb. These phosphate amendments may be a viable strategy in the in situ remediation of Pb contamination in urban soils.

KeywordAmendments Bioavailability Immobilization Pb Urban Soils
DOI10.15244/pjoes/61901
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000381108800022
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorLu Y
Affiliation1.South China Agr Univ, Coll Nat Resources & Environm Sci, Guangzhou 510642, Guangdong, Peoples R China
2.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA
3.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau 999078, Peoples R China
Recommended Citation
GB/T 7714
Li JH,Jia CJ,Lu Y,et al. Using phosphorus and zeolite to immobilize lead in two contrasting contaminated urban soils[J]. Polish Journal of Environmental Studies,2016,25(4):1589-1594.
APA Li JH,Jia CJ,Lu Y,&Shim H.(2016).Using phosphorus and zeolite to immobilize lead in two contrasting contaminated urban soils.Polish Journal of Environmental Studies,25(4),1589-1594.
MLA Li JH,et al."Using phosphorus and zeolite to immobilize lead in two contrasting contaminated urban soils".Polish Journal of Environmental Studies 25.4(2016):1589-1594.
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