The characterization of a novel magnetic biochar derived from sulfate-reducing sludge and its application for aqueous Cr(Ⅵ) removal through synergistic effects of adsorption and chemical reduction

Yong‐Jun Chen, Rui Ma, Xunchi Pu, Xiaoying Fu, Xiaoyu Ju, Muhammad Arif, Xueqian Yan, Jin Qian, Yu Liu