Elucidating Multiple Electron-Transfer Pathways for Metavanadate Bioreduction by Actinomycetic <i>Streptomyces microflavus</i>

Wang, Shixiang; Zhang, Baogang; Fei, Yangmei; Liu, Huan; Zhao, Yi; Guo, Huaming

doi:10.1021/acs.est.3c07288

Cited by 35 publications

(3 citation statements)

References 83 publications

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“…Cytochrome c (Cyt c) and GSH were both maximized in the anaerobic system, confirming their involvement in V(V) reduction through electron transfer under anaerobic operations. Similar increasing trends of Cyt c and GSH contents were also observed during the anaerobic bioreduction of soluble V(V) …”

Section: Resultsmentioning

confidence: 99%

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

He,

Zhang,

Yan

et al. 2024

ACS Nano

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Abundant smelting ash is discharged during pyrometallurgical vanadium (V) production. However, its associated V speciation and resultant ecological impact have remained elusive. In this study, V speciation in smelting ash and its influence on the metabolism of soil microorganisms were investigated. Smelting ashes from V smelters contained abundant V (19.6− 115.9 mg/g). V(V) was the dominant species for soluble V, while solid V primarily existed in bioavailable forms. Previously unrevealed V nanoparticles (V-NPs) were prevalently detected, with a peak concentration of 1.3 × 10 13 particles/g, a minimal size of 136.0 ± 0.6 nm, and primary constituents comprising FeVO 4 , VO 2 , and V 2 O 5 . Incubation experiments implied that smelting ash reshaped the soil microbial community. Metagenomic binning, gene transcription, and component quantification revealed that Microbacterium sp. and Tabrizicola sp. secreted extracellular polymeric substances through epsB and yhxB gene regulation for V-NPs aggregation to alleviate toxicity under aerobic operations. The V K-edge X-ray absorption near-edge structure (XANES) spectra suggested that VO 2 NPs were oxidized to V 2 O 5 NPs. In the anaerobic case, Comamonas sp. and Achromobacter sp. reduced V(V) to V(IV) for detoxification regulated by the napA gene. This study provides a deep understanding of the V speciation in smelting ash and microbial responses, inspiring promising bioremediation strategies to reduce its negative environmental impacts.

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Section: Resultsmentioning

confidence: 99%

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

He,

Zhang,

Yan

et al. 2024

ACS Nano

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“…flow batteries (Watt et al, 2018;Wang et al, 2023). The rising demand in vanadium production has led to intensive anthropogenic emission, which makes vanadium a re-emerging environmental problem and draws increasingly more attention from research entities (Watt et al, 2018).…”

mentioning

confidence: 99%

“…Vanadium exposure can lead to potential adverse effects (Huang et al, 2015;Fei et al, 2023;He et al, 2023), which calls for stricter environmental regulation on vanadium level in the environmental medium. The mobilization of environmental vanadium can occur through natural pathways, i.e., weathering of vanadium bearing rocks (Hope et al, 2008;Shiller and Mao, 2000) and volcanic activities (Bortnikova et al, 2009), as well as wide ranges of anthropogenic activities, which has significantly surpassed the vanadium output induced by natural processes (Schlesinger et al, 2017).…”

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confidence: 99%

Emission Inventory Development for Spatiotemporal Release of Vanadium from Anthropogenic Sources in China

Zhang,

Jiang

et al. 2024

Preprint

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Abstract. Anthropogenic activities contribute primarily to the toxic vanadium presence in the surface environment, but quantitative assessment of its emissions from anthropogenic sources to various environmental receptors is still lacking. This study has developed nationwide vanadium emission inventory in China during 2015–2019, covering five major anthropogenic sources, including coal combustion, stationary oil burning, transportation, industrial production, and waste handling. Cumulative emission flux modelling has shown that 211094 t, 3725 t, and 0.1 t of vanadium were discharged into atmosphere, soil and water during this period. Coal combustion and stationary source of oil burning are the largest vanadium contributors, accounting for 47.5 % and 39.6 % of emission inventory. Shandong, Liaoning, Hebei, Guangdong and Hunan are among the largest provincial emitters. Emissions pertinent to raw coal combustion mainly increase by 719 t and 316 t in the provinces of North China and Northwestern China, respectively. Vanadium output pertinent to steelmaking constitutes 88.2 % emission in industrial production, and continued to increase in all regions. Emissions induced by vanadium mining shows remarkable spatial heterogeneity, with 66.1 % output determined in Southwestern China. Emissions pertinent to raw coal and coke combustion was the main source of uncertainty for the inventory development, resulting in output uncertainty ranging from -47.5 % to 63.7 % and -49.4 % to 53.7 %.

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Magnetic Chitosan/ZrO₂ Composites for Vanadium(V) Adsorption while Concurrently being Transformed to a Dual Functional Catalyst

Zhang,

Zhi,

Hou

et al. 2024

Chemistry A European J

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Spent adsorbents for recycling as catalysts have drawn considerable attention due to their environmentally benign chemistry properties. However, traditional thermocatalytic strategies limit their applications. Here, we developed an enhanced photocatalytic strategy to expand the range of their applications. A magnetic chitosan/ZrO2 composites (MZT) for V(V) adsorption, which were prepared using chitosan, ZrO2 and Fe3O4 by one‐pot synthesis. The spent MZT as a catalyst was used to synthesize 2‐phenylbenzimidazole, yielding up to 89.7%. It also was implemented to photocatalysis reactions for recycle. The discolored rates of rhodamine B (RhB) were 72.3% and 97.4% by new and spent MZT, respectively. The new and spent MZT showed the forbidden bands were 251 nm and 561 nm, respectively. The result displayed spent MZT red shifted to the cyan light region. The mechanism of catalysis also has been studied in detail.

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Elucidating Multiple Electron-Transfer Pathways for Metavanadate Bioreduction by Actinomycetic Streptomyces microflavus

Cited by 35 publications

References 83 publications

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

Emission Inventory Development for Spatiotemporal Release of Vanadium from Anthropogenic Sources in China

Magnetic Chitosan/ZrO₂ Composites for Vanadium(V) Adsorption while Concurrently being Transformed to a Dual Functional Catalyst

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Elucidating Multiple Electron-Transfer Pathways for Metavanadate Bioreduction by Actinomycetic Streptomyces microflavus

Cited by 35 publications

References 83 publications

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

Emission Inventory Development for Spatiotemporal Release of Vanadium from Anthropogenic Sources in China

Magnetic Chitosan/ZrO2 Composites for Vanadium(V) Adsorption while Concurrently being Transformed to a Dual Functional Catalyst

Contact Info

Product

Resources

About

Magnetic Chitosan/ZrO₂ Composites for Vanadium(V) Adsorption while Concurrently being Transformed to a Dual Functional Catalyst