Fe@Fe2O3 pretreatment enhanced production of short-chain fatty acids from anaerobic sludge fermentation: Elucidating hydrolysis-acidification performance and mechanisms - Jinbao Xu; Jipeng Zou; Xiaowei Zhang; Sifeng Jian; Liang Zuo; Peiyao Song; Linqing Qiu; Wei Li; Yongkang Dai; Yongsheng Chen; Lei Miao; Gang Guo; et al. (Journal of Environmental Chemical Engineering, 2026)