Characteristics and mechanisms of arsenic behavior during the microbial oxidation-reduction of iron

被引：0
|
作者：
Xiu, W. [1 ]
Guo, H. M. [1 ,2 ]
Yu, X. N. [2 ]
Yuan, W. J. [2 ]
Ke, T. T. [2 ]
机构：
[1] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China
[2] China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing, Peoples R China
来源：
ENVIRONMENTAL ARSENIC IN A CHANGING WORLD (AS2018) | 2018年
基金：
中国国家自然科学基金;
关键词：
RELEASE;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The (bio)geochemical cycling of arsenic (As) and iron (Fe) is generally coupled in high As groundwater. However, characteristics and mechanisms of As sequestration-release behavior during formation-reduction of biogenic Fe(III) minerals (bio-FeM) are poorly understood. The Pseudogulbenkiania sp. strain 2002 induced the formation of binary bio-FeM, facilitating As immobilization compared to single Fe(III) minerals. Net As release was found during reduction of binary bio-FeM by Shewanella oneidensis strain MR-1, which was affected by secondary iron mineral formation and competitive adsorption. We suggested that bio-FeM deserve more attention due to their outstanding potential roles in controlling As behavior in aquatic systems.
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页码：150 / 151
页数：2
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