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Mechanism for Photopromoted Release of Vanadium from Vanadium Titano-Magnetite
Hu, Xingyun; Peng, Xianjia; Kong, Linghao
2018-02-20
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume52Issue:4Pages:1954-1962
AbstractThe release of V from vanadium titanomagnetite, a predominant natural source of V, was studied under light irradiation. The release rate of V from vanadium titano-magnetite was accelerated by light irradiation, and the oxidation of V was detected. The essence of the photo promoted release of V is that the immobile low valence V is transformed to the mobile V(V) by photoinduced active species generated from the photocatalysis process of magnetite. Among the photoinduced active species, center dot OH and H2O2 were recognized as the most important oxidizing agents. Not only can they directly convert the immobile low-valence V to the mobile V(V) but also initiate the Fenton reaction, which produces more center dot OH and then further promotes the oxidation of low-valence V. In addition, a conceptual model of the photo promoted release of V was proposed. This study, as part of a broader study of the release behavior of V, can improve the understanding of the pollution problem about V, as well as the fate and environmental geochemistry cycling of V in the natural environment.
Department环境水质学国家重点实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/41157
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Hu, Xingyun,Peng, Xianjia,Kong, Linghao. Mechanism for Photopromoted Release of Vanadium from Vanadium Titano-Magnetite[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(4):1954-1962.
APA Hu, Xingyun,Peng, Xianjia,&Kong, Linghao.(2018).Mechanism for Photopromoted Release of Vanadium from Vanadium Titano-Magnetite.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(4),1954-1962.
MLA Hu, Xingyun,et al."Mechanism for Photopromoted Release of Vanadium from Vanadium Titano-Magnetite".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.4(2018):1954-1962.
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