Isotopic and genomic interrogation unravels the sustaining mechanism of nitrate-dependent Fe(II) oxidation via organic carbon-driven internal iron cycle - Xiaojing Hao; Lei Wu; Wei Zeng; Qingteng Gong; Mengjia Zhan; Haohao Miao; Chengcheng Yuan; Yongzhen Peng (Water Research, 2026)