HUBEI AGRICULTURAL SCIENCES ›› 2018, Vol. 57 ›› Issue (14): 5-5.doi: 10.14088/j.cnki.issn0439-8114.2018.14.001

• Reviews •     Next Articles

Research Progress of Biochar on Soil Remediation of Heavy Metal Pollution

WANG Jing, MU Zhen-zhen, REHMAT Islam, MENG Xian-gang   

  1. School of Chemical and Biogical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
  • Received:2018-04-27 Online:2018-07-25 Published:2019-12-19

Abstract: Biochar is a product obtained by pyrolysis of biomass under certain temperature and oxygen-limited(or oxygen-blocking) conditions. The method of biochar treatment of heavy metal pollution in soil is proposed by introducing the concept, preparation method and physicochemical properties of biochar. The use of biochar or the combination of biochar with other materials can be used as a way to control heavy metal pollution. The use of biochar adsorption to repair contaminated soil can reduce the bioavailability of heavy metal ions and reduce the heavy metal content in plants. However, current research and repair methods still have shortcomings, and it is expected to find environmentally friendly, scientific and reasonable materials and techniques to repair heavy metal pollution in the soil.

Key words: biochar, soil, heavy metal pollution, adsorption

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