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Journal of Chemistry
Volume 2013 (2013), Article ID 509520, 6 pages
http://dx.doi.org/10.1155/2013/509520
Research Article

Immobilization of Lead from Pb-Contaminated Soil Amended with Peat Moss

1Department of Environmental Engineering, Gyeongnam National University of Science and Technology (GNTECH), Jinju 660-758, Republic of Korea
2Green Technology Institute, GNTECH, Jinju 660-758, Republic of Korea
3Centre for Mined Land Rehabilitation, The University of Queensland, St. Lucia, QLD 4072, Australia
4Department of Landscape Architecture, GNTECH, Jinju 660-758, Republic of Korea

Received 30 May 2013; Revised 31 July 2013; Accepted 2 August 2013

Academic Editor: Daryoush Afzali

Copyright © 2013 Seul-Ji Lee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Immobilization of lead (Pb) using soil amendments can reduce Pb toxicity and bioavailability in soil. This study evaluated Pb immobilization in a Pb-contaminated soil by using peat moss through various tests. The Pb-contaminated soil (2000 mg Pbkg−1) was amended with 1%, 5%, and 10% of peat moss to immobilize Pb in the soil. The immobilization properties of Pb in the contaminated soil were evaluated by a column leaching experiment, a microcosm test, and a batch incubation test. Peat moss significantly reduced the Pb leaching in all of the experiments and more effectively reduced mobility and toxicity of Pb in the column leaching and microcosm tests than bioavailability in the batch incubation test. The immobilized lead from the soils amended with 1%, 5%, and 10% of peat moss was 37.9%, 87.1%, and 95.4% from the column leaching test, 18.5%, 90.9%, and 96.4% from the microcosm test, and 2.0%, 36.9%, and 57.9% from the NH4NO3 extraction method, respectively, indicating that peat moss can be effectively used for the remediation of Pb-contaminated soil.