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Using biochar for remediation of soils contaminated with heavy metals and organic pollutants

  • Contaminated Land, Ecological Assessment and Remediation Conference Series (CLEAR 2012) : Environmental Pollution and Risk Assessments
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Abstract

Soil contamination with heavy metals and organic pollutants has increasingly become a serious global environmental issue in recent years. Considerable efforts have been made to remediate contaminated soils. Biochar has a large surface area, and high capacity to adsorb heavy metals and organic pollutants. Biochar can potentially be used to reduce the bioavailability and leachability of heavy metals and organic pollutants in soils through adsorption and other physicochemical reactions. Biochar is typically an alkaline material which can increase soil pH and contribute to stabilization of heavy metals. Application of biochar for remediation of contaminated soils may provide a new solution to the soil pollution problem. This paper provides an overview on the impact of biochar on the environmental fate and mobility of heavy metals and organic pollutants in contaminated soils and its implication for remediation of contaminated soils. Further research directions are identified to ensure a safe and sustainable use of biochar as a soil amendment for remediation of contaminated soils.

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Acknowledgments

This study was funded by the National Natural Science Foundation of China (41271337), Research Funds of the Department of Education of Zhejiang Province (Y201225755) and Zhejiang A & F University Research and Development Fund (2010FR097, 2012FR063).

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Authors and Affiliations

  1. Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, China

    Xiaokai Zhang, Hailong Wang, Lizhi He, Kouping Lu & Jianwu Li

  2. School of Environmental and Resource Sciences, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, China

    Xiaokai Zhang, Hailong Wang, Lizhi He, Kouping Lu, Jianwu Li, Jianchuan Pei & Huagang Huang

  3. Department of Civil & Environmental Engineering, Faculty of Engineering, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand

    Ajit Sarmah

  4. Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, South Australia, Australia

    Nanthi S. Bolan

  5. Yancao Production Technology Center, Bijie Yancao Company of Guizhou Province, Bijie, 551700, China

    Huagang Huang

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  1. Xiaokai Zhang
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  2. Hailong Wang
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Correspondence to Hailong Wang or Huagang Huang.

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Zhang, X., Wang, H., He, L. et al. Using biochar for remediation of soils contaminated with heavy metals and organic pollutants. Environ Sci Pollut Res 20, 8472–8483 (2013). https://doi.org/10.1007/s11356-013-1659-0

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