生物炭改性及在环境污染治理方面的应用OA

Biochar is a kind of porous material formed by the pyrolysis of biomass,which has excellent surface properties and structure,and is rich in carbon.Biochar is an ideal substitute for activated carbon due to its wide source of raw materials and simple preparation process.Due to its high carbon content,large specific surface area,abundant surface functional groups,and large cation exchange capacity,biochar plays an important role in the environmental field.This paper summarizes several common biochar prepara-tion technologies,discusses the factors affecting the physical and chemical properties of biochar,and highlights several modification methods and applications of modified biochar in soil restoration and wastewater treatment.In addition,the shortcomings existing in the current research are pointed out,and suggestions for future research directions of biochar are proposed.