Suo, Zhangyao, Anrui Li, Xueyan Li, Andan Wang, Rui Fan, Jie Yang, Xurundong Kan, and Jianqiang Zhang. 2025. “Research Progress on the Role of Biochar in COD Degradation in Wastewater”. International Journal of Natural Resources and Environmental Studies 5 (3): 237-44. https://doi.org/10.62051/ijnres.v5n3.26.