The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus

doi:10.3390/min8040159

	The Evidence of Decisive Effect of Both Surface Microstructure and Speciation of Chalcopyrite on Attachment Behaviors of Extreme Thermoacidophile Sulfolobus metallicus
	Zheng L(郑雷); Zhao YD(赵屹东); Ma CY(马陈燕); Xia, JL; Zhao, YD; Zheng, L; Ma, CY; Yang, Y; Yang, Y; Nie, ZY
刊名	MINERALS
	2018
卷号	8 期号:4 页码:159
关键词	chalcopyrite bioleaching Sulfolobus metallicus XANES
ISSN号	2075-163X
DOI	10.3390/min8040159
文献子类	Article
英文摘要	The 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.
WOS关键词	ACIDITHIOBACILLUS-FERROOXIDANS ; ACIDOPHILIC ARCHAEA ; ATOMIC-FORCE ; DEGREES-C ; VISUALIZATION ; ADHESION ; DISSOLUTION ; BACTERIA ; CELLS
WOS研究方向	Mineralogy ; Mining & Mineral Processing
语种	英语
WOS记录号	WOS:000434883100039
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286006]
专题	高能物理研究所_多学科研究中心高能物理研究所_加速器中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zheng L,Zhao YD,Ma CY,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	郑雷.,赵屹东.,马陈燕.,Xia, JL.,Zhao, YD.,...&Ling, WB.(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	郑雷,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.