The Dynamic Experiment on Treating Acid Mine Drainage with Iron Scrap and
Sulfate Reducing Bacteria Using Biomass Materials as Carbon Source

Wang, Xianjun; Di, Junzhen; Dong, Yanrong; Yang, Yu; Liang, Bing; Fan, Meng; Wang, Tingting; An, Wenbo; Li, Zengxin; Guo, Jianzhi

doi:10.32604/jrm.2021.011678

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Di, J.Z. 's team used Maifan stone and modified lignite as surface adsorbent materials in combination with SRB to treat acidic mine drainage, and all of them achieved better results due to their large specific surface area and strong adsorption properties [21][22][23][24]. Shao, L., et al determined the total organic carbon (TOC) and total carbon (TC) contents of six biomass materials, such as corn cob, sugarcane bagasse, and peanut shell, in the leaching solution within 16 d. It was found that the TOC contents of all six materials accounted for more than 90% of TC in the leaching solution, and all of them could release a large amount of organic carbon, which met the basic conditions as the cohesive carbon source materials of SRB [25].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

An,

Hu,

Chen

et al. 2023

PLoS ONE

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The inhibition and toxicity of high acidity and heavy metals on sulfate-reducing bacteria in acid mine drainage (AMD) were targeted. Highly active SRB immobilized particles were prepared using SRB, warm sticker wastes (iron powders), corncobs, and Maifan stones as the main matrix materials, employing microbial immobilization technology. The repair ability and reusability of highly active immobilized particles for AMD were explored. The results indicate that the adaptability of immobilized particles to AMD varied under different initial conditions, such as pH, Mn2+, and SO42-. The adsorption process of immobilized particles on Mn2+ follows the quasi-second-order kinetic model, suggesting that it involves both physical and chemical adsorption. The maximum adsorption capacity of immobilized particles for Mn2+ is 3.878 mg/g at a concentration of 2.0 mg/L and pH 6. On the other hand, the reduction process of immobilized particles on SO42- adheres to the first-order reaction kinetics, indicating that the reduction of SO42- is primarily driven by the dissimilation reduction of SRB. The maximum reduction rate of SO42- by immobilized particles is 94.23% at a concentration of 800 mg/L and pH 6. A layered structure with a flocculent appearance formed on the surface of the immobilized particles. The structure’s characteristics were found to be consistent with sulfate green rust (FeII4FeIII2(OH)12SO4·8H2O). The chemisorption, ion exchange, dissimilation reduction, and surface complexation occurring between the matrices in the immobilized particles can enhance the alkalinity of AMD and decrease the concentration of heavy metals and sulfates. These results are expected to offer novel insights and materials for the treatment of AMD using biological immobilization technology, as well as improve our understanding of the mechanisms behind biological and abiotic enhanced synergistic decontamination.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

An,

Hu,

Chen

et al. 2023

PLoS ONE

Self Cite

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“…Almost all of the world's major coal-producing countries, such as the United States, Germany, South Africa, and Canada, have serious AMD pollution problems (Geldenhuis & Bell, 1998;Knöller et al,2004;Jacobs et al,2014), with AMD-polluted rivers exceeding 20000 km in the United States (Skousen et al, 2019). AMD is characterized by extreme acidity and high sulfate and heavy metal contents, which can corrode infrastructure, pollute water sources, harm aquatic life, and enter the food chain, threatening human health (Adil & Tang 2018;Senoro et al 2021; Wang et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Effects of Adding Carbon Sources and Nutrient Salts on the Acidification and Microbial Community Structure of Coal Gangue

Zhu

Ruan

et al. 2021

Preprint

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Acidic pollution from gangue oxidation has become a primary environmental problem in coal mining areas in China. The use of microorganisms to remediate acidic pollution in coal gangue piles has been indicated to be effective, but environmental differences and carbon sources in different mining areas have become important factors restricting microbial activity. Instead of the addition of new functional bacteria to gangue piles, carbon sources and nutrient salts were added to recently discharged gangue to enhance the activity of beneficial bacteria in the indigenous microbial community. The changes in pH and electrical conductivity (EC) of the gangue leachate as well as the composition and abundance of the functional microbial community on the surface of the gangue were analyzed by leaching simulation experiments and 16S rRNA sequencing. The results showed that (1) the addition of a carbon source maintained the pH of the gangue leachate at 6.31~6.65, which was significantly higher than that of the control group, but the pH of the leachate decreased significantly after the addition of the carbon source was stopped. (2) The addition of carbon sources and nutrient salts changed the microbial community composition on the surface of the gangue, and the species diversity index decreased. The dominant genera in the experimental group were Listeria, Arthrobacter, and Enterococcus; Thiobacillus was not the dominant genus in any of the treatments. (3) The functional gene types in the experimental and control groups were almost the same, but their relative abundance changed. The abundance of functional genes related to the sulfur cycle increased substantially in the experimental group, and the abundance of genes involved in the nitrogen and carbon cycles also increased, albeit to different degrees.

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Addition of carbon sources and nutrient salts can inhibit gangue acidification by changing microbial community structure

Zhu

Ruan

et al. 2022

Environ Sci Pollut Res

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The Dynamic Experiment on Treating Acid Mine Drainage with Iron Scrap and Sulfate Reducing Bacteria Using Biomass Materials as Carbon Source

Cited by 5 publications

References 33 publications

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

Effects of Adding Carbon Sources and Nutrient Salts on the Acidification and Microbial Community Structure of Coal Gangue

Addition of carbon sources and nutrient salts can inhibit gangue acidification by changing microbial community structure

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