Mechanistic insights into low-dose nZVI-enhanced process stability under variable industrial loads in field-scale anaerobic treatment: Interfacial evolution and strain-resolved adaptation - Zhihong Gao; Lijing Xue; Yujia Ma; Chen Chen; Hong Ling; Lin Wang; Weiming Zhang; Jieshu Qian; Zhichao Yang; Ming Hua; Bingcai Pan (Water Research, 2026)