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Iron L-edge and sulfur K-edge XANES spectroscopy analysis of pyrite leached by Acidianus manzaensis
Alternative TitleAcidianus manzaensis浸出黄铁矿过程中铁L边和硫K边XANES光谱学分析
Liu, HC; Xia, JL; Nie, ZY; Ma, YL; Ma, CY; Zheng, L; Hong, CH; Zhao, YD; Ma CY(马陈燕); Zheng L(郑雷); Hong CH(洪才浩); Zhao YD(赵屹东)
2015
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
EISSN2210-3384
Volume25Issue:7Pages:2407-2414
SubtypeArticle
AbstractIron L-edge and sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy analysis of pyrite leached by extreme thermophilic Archaea strain Acidianus manzaensis (A. manzaensis) was carried out. Leaching experiments show that the oxidation of pyrite can be accelerated by A. manzaensis. Leaching results show that with the increase of leaching time, pH value in the leaching solution gradually decreases, redox potential increases rapidly from day 0 to day 3, and then increases slowly. The SEM results show that the pyrite surfaces are corroded gradually by A. manzaensis, and the XRD results show that the leaching residues contain new compositions of jarosite and elemental sulfur (S-0). The iron L-edge XANES spectroscopy analysis of pyrite during biooxidation indicates that pyrite is gradually converted to Fe(III)-containing species. The sulfur K-edge XANES spectroscopy analysis indicates that elemental sulfur is produced during bioleaching and maintains mass fractions of 3.2%-5.9%. Sodium thiosulfate was also detected from day 2 to day 4, indicating the existence of thiosulfate during biooxidation of pyrite.
Keywordpyrite bioleaching chemical speciation XANES Acidianus manzaensis
Subject AreaMetallurgy & Metallurgical Engineering
DOI10.1016/S1003-6326(15)63856-0
Indexed BySCI ; EI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000359325300037
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228691
Collection多学科研究中心
Recommended Citation
GB/T 7714
Liu, HC,Xia, JL,Nie, ZY,et al. Iron L-edge and sulfur K-edge XANES spectroscopy analysis of pyrite leached by Acidianus manzaensis[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2015,25(7):2407-2414.
APA Liu, HC.,Xia, JL.,Nie, ZY.,Ma, YL.,Ma, CY.,...&赵屹东.(2015).Iron L-edge and sulfur K-edge XANES spectroscopy analysis of pyrite leached by Acidianus manzaensis.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,25(7),2407-2414.
MLA Liu, HC,et al."Iron L-edge and sulfur K-edge XANES spectroscopy analysis of pyrite leached by Acidianus manzaensis".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 25.7(2015):2407-2414.
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