Autotrophic Vanadium(V) Bioreduction in Groundwater by Elemental Sulfur and Zerovalent Iron

被引：151

作者：

Zhang, Baogang ^{[1
,2
]}

Qiu, Rui ^{[1
]}

Lu, Lu ^{[2
]}

Chen, Xi ^{[2
]}

He, Chao ^{[1
]}

Lu, Jianping ^{[1
]}

Ren, Zhiyong Jason ^{[2
]}

机构：

[1] China Univ Geosci Beijing, MOE Key Lab Groundwater Circulat & Environm Evolu, Sch Water Resources & Environm, Beijing 100083, Peoples R China

[2] Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2018年 / 52卷 / 13期

基金：

中国国家自然科学基金;

关键词：

MEMBRANE BIOFILM REACTOR; MICROBIAL FUEL-CELLS; ZERO-VALENT IRON; MIXED ANAEROBIC CULTURE; ORGANIC-CARBON SOURCES; SP NOV; BIOELECTRICITY GENERATION; DENITRIFICATION PROCESSES; PERCHLORATE REDUCTION; NITRATE REMOVAL;

D O I：

10.1021/acs.est.8b01317

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Vanadium (V) is an emerging contaminant in groundwater that can adversely affect human health. Although bioremediation has been shown effective, little is known on autotrophic V(V) bioreduction in the context of oligotrophic characteristics of groundwater. In this study, we demonstrate that efficient V(V) bioreductions can be coupled with bio-oxidation of elemental sulfur (5(0)) or zerovalent iron (Fe(0)), and the V(V) removal efficiencies reached 97.5 +/- 1.2% and 86.6 +/- 2.5% within 120 h using S(0) and Fe(0), respectively. V(IV) is the main reduction product and precipitates naturally in near-neutral conditions. Microbial community, functional gene, and metabolites analyses reveal that synthetic metabolisms among autotrophs and heterotrophs played major roles in V(V) reduction using S(0) and Fe(0). These results demonstrate a new approach for V(V) contaminated groundwater remediation.

引用

页码：7434 / 7442

页数：9

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