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

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• 作者：Xiaokai Zhang (1) (2)
  Hailong Wang (1) (2)
  Lizhi He (1) (2)
  Kouping Lu (1) (2)
  Ajit Sarmah (3)
  Jianwu Li (1) (2)
  Nanthi S. Bolan (4)
  Jianchuan Pei (2)
  Huagang Huang (2) (5)
  
• 关键词：Biochar ; Black carbon ; Heavy metals ; Organic pollutants ; Remediation ; Soil contamination
• 刊名：Environmental Science and Pollution Research
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：20
• 期：12
• 页码：8472-8483
• 全文大小：
• 作者单位：Xiaokai Zhang (1) (2)
  Hailong Wang (1) (2)
  Lizhi He (1) (2)
  Kouping Lu (1) (2)
  Ajit Sarmah (3)
  Jianwu Li (1) (2)
  Nanthi S. Bolan (4)
  Jianchuan Pei (2)
  Huagang Huang (2) (5)
  
  1. Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, China
  2. School of Environmental and Resource Sciences, Zhejiang A & F University, Lin’an, Hangzhou, Zhejiang, 311300, China
  3. Department of Civil & Environmental Engineering, Faculty of Engineering, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
  4. Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, South Australia, Australia
  5. Yancao Production Technology Center, Bijie Yancao Company of Guizhou Province, Bijie, 551700, China
  
• ISSN：1614-7499

文摘

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.