TABLE 8.

Different types of biochar for the remediation of PTE-polluted soil and water.

Biochar	Media	PTEs	References
Wheat straw	Soil	Zn, Cd	Qian et al. (2019)
Sugar cane	Soil	Pb	Abdelhafez et al. (2016)
Orange peel, sugarcane bagasse	Soil	Pb, As	Abdelhafez et al. (2014)
Rice straw	Soil	Pb, Cu	Wang et al. (2019)
Sugar cane straw	Soil	Zn, Pb, and Cd	Puga et al. (2015)
Orchard prune residue	Soil	Cd, Cr, Cu, Ni, Pb, and Zn	Fellet et al. (2011)
Hardwood	Soil	As,Cd, Cu, and Zn	Beesley and Marmiroli (2011)
Chicken manure and green waste	Soil	Cd, Cu, and Pb	Park et al. (2011)
Chicken manure	Soil	Cr	Choppala et al. (2012)
Sewage sludge	Soil	Cu, Ni, Zn, Cd and Pb	Méndez et al. (2012)
Rice straw	Soil	Cu, Pb, and Cd	Jiang et al. (2012)
Quail litter	Soil	Cd	Suppadit et al. (2012)
Wood and bark	Water	Cd and Pb	Mohan et al. (2007)
Sugar cane bagasse and orange peel	Water	Pb	Abdelhafez and Li (2016)
Dairy manure	Water	Pb	Cao et al. (2009)
Dairy waste and sugar beet	Water	Pb, Cu, Ni, and Cd	Inyang et al. (2012)
Dairy manure	Water	Cu, Zn, and Cd	Xu et al. (2013)
Crop straws	Water	Cu	Tong and Xu (2013)
Digested sludge	Water	Pb and Cd	Ni et al. (2019)
Rice straw	Water	Pb	Shen et al. (2019)
Algae	Water	Co	Bordoloi et al. (2017)