Physical Treatment for Biochar Modification: Opportunities, Limitations and Advantages

Biochar is a thermo-chemically synthesized/fabricated product of biomass. Recently, biochar applications have spanned into various disciplines such as environmental remediation, water purification, catalysis, tissue engineering, additive in organic waste compost, electrode material and modifier, etc. Modification of biochar is done for specific applications. It brings out the activation of the raw biochar through physical and chemical treatments. Physical modification is frequently done to achieve the superior quality of biochar. In recent years, the application of physical modification method has gained attention as a cost-effective and greener method. The current chapter comprehensively describes the recent developments in physical treatment processes of biochar, opportunities, challenges along with future prospects.