Remediation of arsenic-containing ferrihydrite in soil using iron- and sulfate-reducing bacteria: Implications for microbially-assisted clean technology

Ren, Xiaomin; Yan, Ningzhen; Chen, Shu; Yao, Jun; Liu, Jing

doi:10.1016/j.jece.2022.108876

Cited by 7 publications

(2 citation statements)

References 42 publications

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“…), provide the main adsorption sites for arsenic in soils [43]. And the reductive dissolution of iron (hydro) oxides is the main cause of arsenic release from soils or subsurface environments [44]. Consequently, in treatments T3, T4 and T5 inoculated with reducing bacteria, a significant decrease was observed in the reducible fraction of arsenic, indicating that the inoculation of reducing bacteria facilitated the reductive transformation of Fe(hydro) oxides in the soil, leading to the release of reducible arsenic.…”

Section: Changes In Soil Arsenic Content and Fractionationmentioning

confidence: 99%

Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil by Microbial Reduction

Zhao,

Cao,

Chen

2023

Applied Sciences

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The gradually increasing presence of arsenic, a highly toxic heavy metal, poses a significant threat to both soil environmental safety and human health. Pteris vittata has long been recognized as an efficient hyperaccumulator plant for arsenic pollution. However, the pattern of arsenic accumulation in soil impacts its bioavailability and restricts the extraction efficiency of Pteris vittata. To address this issue, microorganisms have the potential to improve the arsenic accumulation efficiency of Pteris vittata. In this work, we employed anthropogenic enrichment methods to extract functional iron–sulfur-reducing bacteria from soil as a raw material. These bacteria were then utilized to assist Pteris vittata in the phytoremediation of arsenic-contaminated soil. Furthermore, the utilization of organic fertilizer produced from fermented crop straw significantly boosted the remediation effect. This led to an increase in the accumulation efficiency of arsenic by Pteris vittata by 87.56%, while simultaneously reducing the content of available arsenic in the soil by 98.36%. Finally, the experimental phenomena were studied through a soil-microbial batch leaching test and plant potting test. And the mechanism of the microorganism-catalyzed soil iron–sulfur geochemical cycle on arsenic release and transformation in soil as well as the extraction effect of Pteris vittata were systematically investigated using ICP, BCR sequential extraction and XPS analysis. The results demonstrated that using iron–sulfur-reducing microorganisms to enhance the phytoremediation effect is an effective strategy in the field of ecological restoration.

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Section: Changes In Soil Arsenic Content and Fractionationmentioning

confidence: 99%

Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil by Microbial Reduction

Zhao,

Cao,

Chen

2023

Applied Sciences

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“…In this sense, the use of microorganisms or reducing/adsorptive materials with microbial origin has been explored in previous metal remediation works. For instance, iron- and sulfate-reducing bacteria could be used for the microbially assisted alleviation of arsenic pollution from arsenic-containing ferrihydrite soils or to induce cadmium immobilization via secondary mineralization . Also, bioclay matrices were synthesized for the remediation of metals from aqueous solutions by using fungal biomass and MMT clay in a previous work. − …”

Section: Introductionmentioning

confidence: 99%

One-Pot Green-Synthesis of Supported Reductive Biogenic Iron-Based Materials for the Removal of Cr(VI)

Paronetto,

Olivelli,

Montes

et al. 2024

Ind. Eng. Chem. Res.

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Development of environmentally friendly materials for efficient pollutant removal is crucial. In this work, a new one-pot green-synthesis of iron-based materials with a reductive/adsorption potential was developed and tested for remediation of Cr(VI) in water. Biogenic iron particles (BioFe) and BioFe supported on raw montmorillonite (BioFe-MMT) were synthesized using a ferric reducing bacteria consortium (FRB), and their structures were extensively characterized by Mössbauer spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Moreover, the microbial community in the consortium was assessed. Results indicated that BioFe-based materials presented dispersed cubic baricite microparticles containing Fe(II) and Ca2+ in their structure, making them ideal for Cr(VI) remediation. The removal efficiency of Cr(VI) from water by a combination of reduction and adsorption processes using the synthesized materials was evaluated through kinetics experiments. The removal of total chromium was more efficient using supported BioFe than using unsupported BioFe and no dependence with dissolved O2 was detected. The preparation of iron particles with excellent chromium removal performance by a new biobased synthesis could lead to a low-cost and environmentally friendly remediation technology.

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A review of passive acid mine drainage treatment by PRB and LPB: From design, testing, to construction

Wang,

Feng

et al. 2024

Environmental Research

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Remediation of arsenic-containing ferrihydrite in soil using iron- and sulfate-reducing bacteria: Implications for microbially-assisted clean technology

Cited by 7 publications

References 42 publications

Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil by Microbial Reduction

Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil by Microbial Reduction

One-Pot Green-Synthesis of Supported Reductive Biogenic Iron-Based Materials for the Removal of Cr(VI)

A review of passive acid mine drainage treatment by PRB and LPB: From design, testing, to construction

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