Uranium speciation and distribution inShewanella putrefaciensand anaerobic granular sludge in the uranium immobilization process

被引：14
作者：
Huang, Feng-Yu [1 ]
Zhang, Hai-Ling [2 ]
Wang, Yong-Peng [2 ]
Yi, Fa-Cheng [1 ]
Feng, Su [3 ]
Huang, He-Xiang [2 ]
Cheng, Meng-Xi [2 ]
Cheng, Juan [3 ]
Yuan, Wen-Juan [3 ]
Zhang, Jie [3 ]
机构：
[1] Southwest Univ Sci & Technol, Coll Environm & Resources, Mianyang 621010, Sichuan, Peoples R China
[2] China Acad Engn Phys, Inst Mat, Jiangyou 621907, Sichuan, Peoples R China
[3] Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresources & Ecoenvironm, Chengdu 610065, Sichuan, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 326卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Uranium; Speciation; Distribution; Extracellular polymeric substances (EPS); Shewanella putrefaciens; Anaerobic granular sludge (AnGS); EXTRACELLULAR POLYMERIC SUBSTANCES; REDUCTION; U(VI); BIOREMEDIATION; BIOACCUMULATION; SEQUESTRATION; BACTERIA; SULFATE;
D O I：
10.1007/s10967-020-07279-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The uranium (U) inShewanella putrefaciens(S. putrefaciens) and anaerobic granular sludge (AnGS) were fractionated, and the contents and forms of U in each fraction were investigated. The functional groups of microorganisms for U binding and the deposition of U in microbial aggregates were also analyzed. Four main approaches were found involved in U immobilization, including biosorption/complexation by microbial cells and their extracellular polymeric substances (EPS), non-reductive biomineralization, bioreduction and intracellular accumulation. Results show that non-reductive biomineralization was found to be dominated in the U(VI) immobilization process. Besides, the contribution of EPS to U removal could not be ignored.
引用
收藏
页码：393 / 405
页数：13
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