ZnCl2-enhanced soy sauce residue biochar via single-step pyrolysis: Dual enhancement of thermal process safety and 4-chlorophenol adsorption capacity - Chongbin Zhang; Cong Wang; Jian Yang; Hongyang Li; Yongzheng Shang; Mengnan Shen; Chen Lyu; Chenyang Li; Shuang Zhong; Lulu Tang (Process Safety and Environmental Protection, 2025)