Effect of Staphylococcus epidermidis on U(VI) sequestration by Al-goethite

doi:10.1016/j.jhazmat.2019.01.022

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 医学物理与技术中心

	Effect of Staphylococcus epidermidis on U(VI) sequestration by Al-goethite
	Zhang, Zexin 3,4; Liu, Haibo 3; Liu, Lei 4; Song, Wencheng 4; Sun, Yubing 1,2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2019-04-15
卷号	368 页码:52-62
关键词	Al-goethite S. epidermidis U(VI) Sequestration XPS
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2019.01.022
通讯作者	Liu, Haibo(liuhaibosky116@hfut.edu.cn) ; Song, Wencheng(wencsong@cmpt.ac.cn) ; Sun, Yubing(sunyb@ncepu.edu.cn)
英文摘要	Effect of Staphylococcus epidermidis (S. epidermidis) on U(VI) sequestration by Al-goethite were conducted under different geologic conditions. The batch experiments showed that S. epidermidis significantly enhanced the adsorption rates of U(VI) at pH < 9.0 due to the additional metal binding sites. The maximum adsorption capacities of U(VI) on Al-goethite and Al-goethite +S. epidermidis at pH 4.0 and 310 K were calculated from Langmuir equation to be 13.16 and 47.86 mg/g, respectively. The decreased adsorption of U(VI) on Al-goethite + S. epidermidis at high carbonate and pH conditions were primarily driven by the electrostatic repulsion between negatively charged U(VI)-carbonate complexes and the negatively charged adsorbents. According to XPS analysis, the adsorbed U(VI) can be reduced to U(IV) by S. epidermidis, whereas inhibited reduction of U(VI) on Al-goethite + S. epidermidis at high pH could be attributed to the complexation of structural Fe(111) with the oxygen-containing functional groups of S. epidermidis. FT-IR analysis further demonstrated that the bonding of structural Fe(III) with functional groups (e.g., carboxyl and phosphate groups) of S. epidermidis. These results herein are important to understand the fate and transport of U(VI) on the mineral-bacteria ternary systems in the near-surface environment.
资助项目	National Natural Science Foundation of China[21876179] ; National Natural Science Foundation of China[41402030] ; National Natural Science Foundation of China[21607156] ; National Natural Science Foundation of China[21822602] ; Anhui Provincial Natural Science Foundation[1708085MD87]
WOS关键词	EXTRACELLULAR POLYMERIC SUBSTANCES ; ZERO-VALENT IRON ; GRAPHENE OXIDE NANOSHEETS ; ILLITE-SMECTITE MINERALS ; MICROBIAL REDUCTION ; BACILLUS-SUBTILIS ; HEAVY-METAL ; SACCHAROMYCES-CEREVISIAE ; CLAY-MINERALS ; ADSORPTION
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000461270900006
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/42452]
专题	医学物理与技术中心
通讯作者	Liu, Haibo; Song, Wencheng; Sun, Yubing
作者单位	1.North China Elect Power Univ, Coll Environm Sci & Engn, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China 2.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215123, Peoples R China 3.Hefei Univ Technol, Sch Resources & Environm Engn, Key Lab Nanomineral & Pollut Control, Hefei 230009, Anhui, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, Ctr Med Phys & Technol, Anhui Prov Key Lab Med Phys & Technol, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zexin,Liu, Haibo,Liu, Lei,et al. Effect of Staphylococcus epidermidis on U(VI) sequestration by Al-goethite[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,368:52-62.
APA	Zhang, Zexin,Liu, Haibo,Liu, Lei,Song, Wencheng,&Sun, Yubing.(2019).Effect of Staphylococcus epidermidis on U(VI) sequestration by Al-goethite.JOURNAL OF HAZARDOUS MATERIALS,368,52-62.
MLA	Zhang, Zexin,et al."Effect of Staphylococcus epidermidis on U(VI) sequestration by Al-goethite".JOURNAL OF HAZARDOUS MATERIALS 368(2019):52-62.