Mechanistic insights into the detoxification of Cr(VI) and immobilization of Cr and C during the biotransformation of ferrihydrite-polygalacturonic acid-Cr coprecipitates

作者：Zhang, Hanyue; Lu, Yang; Ouyang, Zhuozhi; Zhou, Wenjing; Shen, Xinyue; Gao, Kun; Chen, Shuling; Yang, Yang; Hu, Shiwen^*; Liu, Chongxuan

来源：Journal of Hazardous Materials, 2023, 448: 130726.

DOI：10.1016/j.jhazmat.2023.130726

• Detoxification
• Polygalacturonic acid
• Chromium

Coupled reactions among chromium (Cr), organic matter (OM), and iron (Fe) minerals play significant roles in Cr and carbon (C) cycling in Cr-contaminated soils. Although the inhibitory effects of Cr or polysaccharides acid (PGA) on ferrihydrite transformation have been widely studied, mechanistic insights into detoxification of Cr(VI) and immobilization of Cr and C during the microbially mediated reductive transformation of ferrihydrite remain unclear. In this study, underlying sequestration mechanisms of Cr and C during dissimilatory Fe reduction at

• 单位
  环境保护部华南环境科学研究所; 西北农林科技大学; 中国科学院; 中国科学院研究生院