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The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus
Ling, WB; Wang, L; Liu, HC; Nie, ZY; Yang, Y; Yang, Y; Ma, CY; Zheng, L; Zhao, YD; Xia, JL; Ma CY(马陈燕); Zheng L(郑雷); Zhao YD(赵屹东)
2018
Source PublicationMINERALS
ISSN2075-163X
Volume8Issue:4Pages:159
SubtypeArticle
AbstractThe effect of the surface microstructure and chemical speciation of chalcopyrite on the attachment behaviors of thermoacidophilic archaeon Sulfolobus metallicus was evaluated for the first time by using integrated techniques including epifluorescence microscopy (EFM) and sulfur K-edge X-ray absorption near edge structure (S K-edge XANES) spectroscopy, as well as scanning electron microscopy with energy dispersive spectrometry (SEM/EDS) and Fourier transform infrared (FT-IR) spectroscopy. In order to obtain the specific surface, the chalcopyrite slices were electrochemically oxidized at 0.87 V and reduced at -0.54 V, respectively. The EFM analysis showed that the quantity of cells attaching on the mineral surface increased with time, and the biofilm formed faster on the electrochemically treated slices than on the untreated ones. The SEM-EDS analysis indicated that the deficiency in energy substrate elemental sulfur (S-0) in the specific microsize of local defect sites was disadvantageous to the initial attachment of cells. The XANES and FT-IR data suggested that the elemental sulfur (S-0) could be in favor of initial attachment, and surface jarosites inhibited the adsorption and growth of S. metallicus. These results demonstrated that not only the surface microstructure but also the chemical speciation defined the initial attachment behaviors and biofilm growth of the extreme thermophilic archaeon S. metallicus.
Keywordchalcopyrite bioleaching Sulfolobus metallicus XANES
DOI10.3390/min8040159
WOS KeywordACIDITHIOBACILLUS-FERROOXIDANS ; ACIDOPHILIC ARCHAEA ; ATOMIC-FORCE ; DEGREES-C ; VISUALIZATION ; ADHESION ; DISSOLUTION ; BACTERIA ; CELLS
Indexed BySCI ; ADS
Language英语
WOS Research AreaMineralogy ; Mining & Mineral Processing
WOS SubjectMineralogy ; Mining & Mineral Processing
WOS IDWOS:000434883100039
ADS Bibcode2018Mine....8..159L
ADS URLhttps://ui.adsabs.harvard.edu/abs/2018Mine....8..159L
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2018Mine....8..159L/citations
Citation statistics
Cited Times:1 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286006
Collection多学科研究中心
加速器中心
东莞研究部
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Ling, WB,Wang, L,Liu, HC,et al. The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus[J]. MINERALS,2018,8(4):159.
APA Ling, WB.,Wang, L.,Liu, HC.,Nie, ZY.,Yang, Y.,...&赵屹东.(2018).The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus.MINERALS,8(4),159.
MLA Ling, WB,et al."The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus".MINERALS 8.4(2018):159.
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