Sulfide-driven mixotrophic partial denitrification: From performance to microbial mechanism - Zebin Chen; Peilun Kang; Shengqi Ye; Bing Xie; Xinyu Xie; Jingwen Song; Yiting Ma; Zixuan Wu; Xi Cui; Xiaojing Zhang; Guangwei Yu; Yuhai Liang (Chemical Engineering Journal, 2026)