The Research Progress of Biochar for Heavy Metal Soil Remediation was Briefly Discussed

Abstract

Due to its structural advantages, biochar has developed pore structure, large porosity, surface potential energy, and more oxygen and nitrogen functional groups on the surface, which can adsorb and solidified heavy metals and organic pollutants in contaminated soil to achieve the purpose of repairing contaminated soil. At the same time, adding an appropriate amount of biochar to the soil can also enhance soil nutrition and improve water retention performance, and promote the good development of microbial systems. At present, it has become a research hotspot of contaminated soil remediation. In this paper, the preparation technology of biochar, the remediation mechanism of biochar and heavy metal pollutants, as well as the development prospect and precautions are described, in order to provide theoretical reference for the study of biochar in soil remediation.