Synergy between pyridine anaerobic mineralization and vanadium (V) oxyanion bio-reduction for aquifer remediation

Shi, Jiaxin; Li, Zongyan; Zhang, Baogang; Li, Lei; Sun, Weimin

doi:10.1016/j.jhazmat.2021.126339

Cited by 13 publications

(7 citation statements)

References 82 publications

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“…The fitting results of RT 57 Fe Mossbauer spectroscopy for Fe speciation showed that the recorded spectra were equipped with four sextets (Figure 5), whose hyperfine parameters were typical for the pyrrhotite at RT (Table S3). 38 A slight broadening of the line width was found with increasing reaction time, which was associated with a decrease in Fe% of pyrrhotite.…”

Section: ■ Resultsmentioning

confidence: 99%

“…55 Sulf urif ustis, a chemolithoautotrophic S 0 oxidizer, 56 was enriched in the biosystem. Their activities resulted in the declined S 0 area in the XPS pattern for possible V(V) reduction, 57 accompanied by the appearance of the SO 4 2− signal with the operation proceeding (Figure 4I−L). These results collectively confirmed that microbes delivered electrons for V(V) reduction through the sustained oxidation of Fe and S elements in pyrrhotite in the biosystem.…”

Section: ■ Resultsmentioning

confidence: 99%

“…The valences of relevant elements of the minerals in different reaction periods were characterized by X-ray photoelectron spectroscopy (XPS) (ECSALAB 250Xi, Thermo Fisher Scientific). The iron phases at different reaction periods were characterized using 57 Fe transmission Mossbauer spectroscopy (TMS) (MFD-500A, Topologic System). The detailed analysis methods are described in the Supporting Information.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Vanadate Bio-Detoxification Driven by Pyrrhotite with Secondary Mineral Formation

Zhang

Wang

et al. 2023

Environ. Sci. Technol.

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Vanadium(V) is a redox-sensitive heavy-metal contaminant whose environmental mobility is strongly influenced by pyrrhotite, a widely distributed iron sulfide mineral. However, relatively little is known about microbially mediated vanadate [V(V)] reduction characteristics driven by pyrrhotite and concomitant mineral dynamics in this process. This study demonstrated efficient V(V) bioreduction during 210 d of operation, with a lifespan about 10 times longer than abiotic control, especially in a stable period when the V(V) removal efficiency reached 44.1 ± 13.8%. Pyrrhotite oxidation coupled to V(V) reduction could be achieved by an enriched single autotroph (e.g., Thiobacillus and Thermomonas) independently. Autotrophs (e.g., Sulfurifustis) gained energy from pyrrhotite oxidation to synthesize organic intermediates, which were utilized by the heterotrophic V(V) reducing bacteria such as Anaerolinea, Bacillus, and Pseudomonas to sustain V(V) reduction. V(V) was reduced to insoluble tetravalent V, while pyrrhotite oxidation mainly produced Fe(III) and SO4 2–. Secondary minerals including mackinawite (FeS) and greigite (Fe3S4) were produced synchronously, resulting from further transformations of Fe(III) and SO4 2– by sulfate reducing bacteria (e.g., Desulfatiglans) and magnetotactic bacteria (e.g., Nitrospira). This study provides new insights into the biogeochemical behavior of V under pyrrhotite effects and reveals the previously overlooked mineralogical dynamics in V(V) reduction bioprocesses driven by Fe(II)-bearing minerals.

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Section: ■ Resultsmentioning

confidence: 99%

Section: ■ Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Vanadate Bio-Detoxification Driven by Pyrrhotite with Secondary Mineral Formation

Zhang

Wang

et al. 2023

Environ. Sci. Technol.

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“…After being purified and quantified, a mixture of amplicons was used for high-throughput 16S rRNA gene sequencing on MiSeq (Illumina, San Diego, CA, USA). The resulting data were processed, and microbial communities were analyzed, as previously described [ 32 , 33 ].…”

Section: Methodsmentioning

confidence: 99%

Heterotrophic Bioleaching of Vanadium from Low-Grade Stone Coal by Aerobic Microbial Consortium

Zhang

Shi

Meng

et al. 2022

IJERPH

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Bioleaching is a viable method that assists in increasing the vanadium output in an economical and environmentally friendly manner. Most bioleaching is conducted by pure cultures under autotrophic conditions, which frequently require strong acidity and produce acid wastewater. However, little is known about heterotrophic bioleaching of vanadium by mixed culture. This study investigated the bioleaching of vanadium from low-grade stone coal by heterotrophic microbial consortium. According to the results, vanadium was efficiently extracted by the employed culture, with the vanadium recovery percentage in the biosystem being 7.24 times greater than that in the control group without inoculum. The average vanadium leaching concentration reached 680.7 μg/L in the first three cycles. The kinetic equation indicated that the main leaching process of vanadium was modulated by a diffusion process. Scanning electron microscopy revealed traces of bacterial erosion with fluffy structures on the surface of the treated stone coal. X-ray photoelectron spectroscopy confirmed the reduction of the vanadium content in the stone coal after leaching. Analysis of high-throughput 16S rRNA gene sequencing revealed that the metal-oxidizing bacteria, Acidovorax and Delftia, and the heterotrophic-metal-resistant Pseudomonas, were significantly enriched in the bioleaching system. Our findings advance the understanding of bioleaching by aerobic heterotrophic microbial consortium and offer a promising technique for vanadium extraction from low-grade stone coals.

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“…Furthermore, revealing bacterial community structures in the WWRbased V(V) bio-detoxification processes would be vital and can give insights into the microbial restoring mechanisms. Recently, dominant and functional bacteria in V(V) reduction systems using various kinds of carbon sources have been widely determined (Hao et al, 2021c;Shi et al, 2021;Chen et al, 2022). The highly toxic V(V) could be reduced to the less toxic V(IV) by many species in a polluted environment (V(V)-reducingrelated bacteria, VRB) (Supplementary Table S1).…”

Section: Introductionmentioning

confidence: 99%

Vanadium (V) bio-detoxification based on washing water of rice as microbial and carbon sources

Hao

Wang

Shi

et al. 2023

Front. Environ. Sci.

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Mining and smelting result in vanadium (V) being released into the environment. Biologically removing V(V) with washing water of rice (WWR) was investigated in this study. Over a 7-d trial, the V(V) removal efficiency increased with dosing washing water of rice dosage up to 56.6%. The results demonstrated that washing water of rice could be used as carbon and microbial sources for biologically reducing V(V). Using domesticated sludge as the inoculum could enhance V(V) detoxification performance, and 95.5% of V(V) was removed in the inoculated system for 5 d. Soluble V(V) was transformed into insoluble V(IV) (VO2), which could be further removed with precipitation. In addition to ABC transporters, a two-component system was also involved in V(V) reduction. The study confirmed that washing water of rice could be utilized for V(V) bio-detoxification.

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Synergy between pyridine anaerobic mineralization and vanadium (V) oxyanion bio-reduction for aquifer remediation

Cited by 13 publications

References 82 publications

Vanadate Bio-Detoxification Driven by Pyrrhotite with Secondary Mineral Formation

Vanadate Bio-Detoxification Driven by Pyrrhotite with Secondary Mineral Formation

Heterotrophic Bioleaching of Vanadium from Low-Grade Stone Coal by Aerobic Microbial Consortium

Vanadium (V) bio-detoxification based on washing water of rice as microbial and carbon sources

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