Role of biochar in polyaromatic hydrocarbons remediation and environment management

Polycyclic aromatic hydrocarbons (PAHs) have been reported as priority pollutants due to their teratogenicity, genotoxicity, and carcinogenicity. Efficient remediation techniques are being sought for effective treatment and reuse of PAHs contaminated sediments. Biochar application for such purposes has been recently imposed as a sustainable and innovative technology. Biochar is actively involved in the sorption and consequent removal of PAHs from contaminated environmental samples. This chapter detailed the production and properties of biochar obtained from the pyrolysis of different raw materials. The application of biochar in the remediation of PAHs obtained from different sources is discussed. Biochar in combination with capping agents has been utilized, and its application in soil ecosystems increases the removal of PAHs. The insights into the knowledge gaps and future perspectives have been discussed. This suggests that biochar application offers new avenues for PAHs remediation while simultaneously providing a sustainable solution to the waste biomass problem.