Activated peroxydisulfate by sorghum straw-based biochar for enhanced tartrazine degradation: Roles of adsorption and radical/nonradical processes - Xiaojuan Chen; Yu Zhou; Jiesen Li; Suresh C. Pillai; Nanthi Bolan; Juhua He; Ning Li; Song Xu; Xin Chen; Qinghua Lin; Hailong Wang (Environmental Pollution, 2023)