Synergistic Enhancement of Cobalt Adsorption by Graphitization and Magnetic Modification of Biochar: Synthesis, Characterization, Performance and Mechanism - Hui Liu; Chen Li; Zhichao Fan; Zhirui Dou; Beibei Lu; Xiao Fan; Xiaohui Ji; Jinlong Lai; Qian Fu; Songlin Gong; Xinna Wang; Jie Liu (Water, Air, & Soil Pollution, 2025)