Uranium bioremediation with U(VI)-reducing bacteria

You, Wenbo; Peng, Wanting; Tian, Zhichao; Zheng, Maosheng

doi:10.1016/j.scitotenv.2021.149107

Cited by 77 publications

(21 citation statements)

References 163 publications

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“…In most cases, the first step in the recovery process from these mineral or material resources consists of leaching steps (Abhilash and Pandey, 2013;Zhang et al, 2016), followed by concentration and separation processes, such as solvent extraction (Wu et al, 2018) (including extractant impregnated sorbents (Mosleh et al, 2020), and membranes), precipitation (Borai et al, 2016;Hamza et al, 2019) (eventually coupled to bioreduction, (You et al, 2021)). The sorption of uranium was investigated using different types of sorbents such as ion exchange resins (Ang et al, 2017;Smirnov et al, 2017), chelating resins (Ang et al, 2018;Zidan et al, 2020), mineral sorbents (Gladysz-Plaska et al, 2018;Liao et al, 2019), biosorbents (Dabbagh et al, 2018;Hamza et al, 2021;Nuhanovic et al, 2019;Ozudogru and Merdivan, 2020), biobased char (Ahmed et al, 2021), or iron-based materials (Chen et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

Hamza

Wei

Khalafalla

et al. 2022

Science of The Total Environment

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Section: Introductionmentioning

confidence: 99%

U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

Hamza

Wei

Khalafalla

et al. 2022

Science of The Total Environment

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“…Enzymatic uranium reduction can occur directly or indirectly in the cytoplasm, periplasm, at the outer membrane or extracellularly ( Figure 2 and Table 1 ) (reviewed in You et al, 2021 ). It has been investigated particularly in Geobacter species, which often dominate in anaerobic uranium-reductive bioremediation setups ( Yun-Juan et al, 2005 ; Shelobolina et al, 2008 ; Chandler et al, 2010 ).…”

Section: Uranium Reduction Mechanismsmentioning

confidence: 99%

“…A more extensive screening of different metals can be useful to identify key inhibitors of uranium reduction. Besides metal ions, also uranyl speciation and concentration, pH, temperature, electron donors and acceptors can affect uranium reduction rates (recently reviewed by You et al, 2021 ). Nevertheless, uranium reduction can still be an asset in several conditions.…”

Section: General Implications For Technological Applicationsmentioning

confidence: 99%

Molecular Mechanisms Underlying Bacterial Uranium Resistance

Rogiers

Williamson²,

Leys³

et al. 2022

Front. Microbiol.

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Environmental uranium pollution due to industries producing naturally occurring radioactive material or nuclear accidents and releases is a global concern. Uranium is hazardous for ecosystems as well as for humans when accumulated through the food chain, through contaminated groundwater and potable water sources, or through inhalation. In particular, uranium pollution pressures microbial communities, which are essential for healthy ecosystems. In turn, microorganisms can influence the mobility and toxicity of uranium through processes like biosorption, bioreduction, biomineralization, and bioaccumulation. These processes were characterized by studying the interaction of different bacteria with uranium. However, most studies unraveling the underlying molecular mechanisms originate from the last decade. Molecular mechanisms help to understand how bacteria interact with radionuclides in the environment. Furthermore, knowledge on these underlying mechanisms could be exploited to improve bioremediation technologies. Here, we review the current knowledge on bacterial uranium resistance and how this could be used for bioremediation applications.

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“…Others studies showed that the community relationship became more complex owing to competition between microorganisms during bioremediation [15,16]. Exogenous microorganisms competition with in-situ microorganisms, leading to the change in the community structure [17]. Therefore, under the conditions of exogenous microbial remediation, the microbial community competition and change relationship in the remediation environment need to be studied for ecological safety and protection in the process of bioremediation of uranium pollution.…”

Section: Introductionmentioning

confidence: 99%

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

Tang

Zhong

et al. 2021

Minerals

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Bacillus sp. is widely used in the remediation of uranium-contaminated sites. However, little is known about the competitive process of microbial community in the environment during bioremediation. The bioremediation of uranium tailings using Bacillus sp. was explored, and the bacterial community was analyzed by high-throughput sequencing at different stages of remediation. Bacillus sp. reduced the leaching of uranium from uranium tailings. The lowest uranium concentration was 17.25 μg/L. Alpha diversity revealed that the abundance and diversity of microorganisms increased with the extension of the culture time. The microbial abundance and diversity were higher in the treatment group than in the control group. The dominant species at the phyla level were Firmicutes and Proteobacteria in the uranium tailings environment, whereas the phylum of Proteobacteria was significantly increased in the treatment group. Based on the genus level, the proportions of Arthrobacter, Rhodococcus and Paenarthrobacter decreased significantly, whereas those of Clostridium sp., Bacillus and Pseudomonas increased dramatically. Hence, the remediation of uranium contamination in the environment was due to the functional microorganisms, which gradually became the dominant strain in the treatment, such as Desulfotomaculum, Desulfosporporosinus, Anaerocolumna, Ruminiclostridium and Burkholderia. These findings provided a promising outlook of the potential for remediation strategies of soil contaminated by uranium. The dynamic characteristics of the microbial community are likely to provide a foundation for the bioremediation process in practice.

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Uranium bioremediation with U(VI)-reducing bacteria

Cited by 77 publications

References 163 publications

U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

U(VI) and Th(IV) recovery using silica beads functionalized with urea- or thiourea-based polymers – Application to ore leachate

Molecular Mechanisms Underlying Bacterial Uranium Resistance

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

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