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

文献类型：期刊论文

作者Zhang, Zexin2,4; Liu, Haibo4; Liu, Lei2; Song, Wencheng2; Sun, Yubing1,3
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2019-04-15
卷号368页码:52-62
ISSN号0304-3894
关键词Al-goethite S. epidermidis U(VI) Sequestration XPS
DOI10.1016/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.
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
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 ; 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
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.Chinese Acad Sci, Hefei Inst Phys Sci, Ctr Med Phys & Technol, Anhui Prov Key Lab Med Phys & Technol, Hefei 230031, Anhui, Peoples R China
3.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215123, Peoples R China
4.Hefei Univ Technol, Sch Resources & Environm Engn, Key Lab Nanomineral & Pollut Control, Hefei 230009, 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.

入库方式： OAI收割

来源：合肥物质科学研究院

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