TY - JOUR
T1 - Autotrophic Vanadium(V) Bioreduction in Groundwater by Elemental Sulfur and Zerovalent Iron
AU - Zhang, Baogang
AU - Qiu, Rui
AU - Lu, Lu
AU - Chen, Xi
AU - He, Chao
AU - Lu, Jianping
AU - Ren, Zhiyong Jason
N1 - Funding Information:
This research work was supported by the National Natural Science Foundation of China (NSFC) (No. 41672237, No. 91647115) and Beijing Nova Program (No. Z171100001117082). B.Z. was supported by China Scholarship Council (No. 201706405028).
Publisher Copyright:
Copyright © 2018 American Chemical Society.
PY - 2018/7/3
Y1 - 2018/7/3
N2 - 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 (S(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.
AB - 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 (S(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.
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U2 - 10.1021/acs.est.8b01317
DO - 10.1021/acs.est.8b01317
M3 - Article
C2 - 29874055
AN - SCOPUS:85048371811
SN - 0013-936X
VL - 52
SP - 7434
EP - 7442
JO - Environmental Science & Technology
JF - Environmental Science & Technology
IS - 13
ER -