Non-radical activation of peroxydisulfate by Fe-doped piggery digestate biochar for efficient sulfamethoxazole removal - Jiayi Li; Yunlong Wu; Qiqi Tang; Yuansheng Wang; Jiaqu Tan; Min Yu; Zhen Zhang; Zhixiao Lv; Yulong Zhang; Xueming Lin (Journal of Environmental Chemical Engineering, 2026)