The influence mechanism of fulvic acid on Fe(II)-catalyzed transformation of Cr(III)-bearing schwertmannite: pH effect and nanoscale redistribution of Cr and C - Qian Yao; Limiao Cai; Xiaohu Jin; Xiaofei Li; Changdong Ke; Yirong Deng; Chuling Guo; Guining Lu; Zhi Dang; Xiaoyun Yi (Chemical Engineering Journal, 2024)