Influencing factors of biochar adsorption properties and its application in soil
Biochar is a kind of solid carbon material produced by high temperature pyrolysis,mainly composed of carbon elements. It possesses characteristics of being sturdy,stable,and having high porosity. Currently,biochar can be applied to the treatment of heavy metals and organic pollutants in water bodies,as well as in soil for purposes including pH regulation,soil improvement,carbon sequestration,pollution control,and enhancement of agricultural production. The factors affecting the adsorption performance of biochar and the application of biochar in soil were reviewed,and the more reasonable application of biochar in soil was prospected. The main factors affecting the adsorption properties of biochar include raw material type,pyrolysis temperature,pyrolysis time,pH,dosage and modification methods. The application of biochar in soil mainly includes improving the physical and chemical properties of soil,adsorption of heavy metals and organic pollutants in soil,provide nutrients and promote plant growth,etc.