Synergistic H₂O₂-granular activated carbon pretreatment mitigates nanofiltration membrane fouling during secondary effluent treatment: Performance and mechanisms - Qinghao He; Bing Xu; Xiangfeng Jia; Yixuan Li; Yongshan Ma; Guangchao Li; Xinwei Kang; Feiyue Ge; Daliang Xu; Xuewu Zhu (Journal of Water Process Engineering, 2026)