Unveiling the crucial role of iron mineral phase transformation in antimony(V) elimination from natural water

Autor: Xiaoyun Liu, Yunyan Wang, Hongrui Xiang, Jiahui Wu, Xu Yan, Wenchao Zhang, Zhang Lin, Liyuan Chai
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Eco-Environment & Health, Vol 2, Iss 3, Pp 176-183 (2023)
Druh dokumentu: article
ISSN: 2772-9850
DOI: 10.1016/j.eehl.2023.07.006
Popis: Antimony (Sb) in natural water has long-term effects on both the ecological environment and human health. Iron mineral phase transformation (IMPT) is a prominent process for removing Sb(V) from natural water. However, the importance of IMPT in eliminating Sb remains uncertain. This study examined the various Sb–Fe binding mechanisms found in different IMPT pathways in natural water, shedding light on the underlying mechanisms. The study revealed that the presence of goethite (Goe), hematite (Hem), and magnetite (Mag) significantly affected the concentration of Sb(V) in natural water. Elevated pH levels facilitated higher Fe content in iron solids but impeded the process of removing Sb(V). To further our understanding, polluted natural water samples were collected from various locations surrounding Sb smelter sites. Results confirmed that converting ferrihydrite (Fhy) to Goe significantly reduced Sb levels (
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