Bacterial Diversity Analysis of Coal Mine Drainage Enriched by Different Energy Sources

Yang, Yu; Ren, Gaimei; Peng, Z.K.; Wang, Xiang

doi:10.1021/ef400214h

Cited by 5 publications

(4 citation statements)

References 27 publications

(19 reference statements)

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“…The 9K medium was used for cultivation of A. caldus and A. thiooxidans, which contained 3.0 g of (NH 4 ) 2 SO 4 , 0.1 g of KCl, 0.5 g of K 2 HPO 4 , 0.5 g of MgSO 4 , 0.01 g of Ca(NO 3 ) 2 , and 1 L of deionized water. 17 Sulfur sources, elemental sulfur, were added to the medium at the concentration of 10 g/L. The final pH value was 2.0.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Research on the Effect of Surfactants on the Biodesulfurization of Coal

Zhang

Ren

et al. 2017

Energy Fuels

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The hydrophobicity of coal limits the adsorption of microorganisms and the efficiency of biological desulfurization was influenced, while the surfactant can enhance the interaction of the four phases, air, water, bacteria, and coal grain. In this experiment, three types of surfactant, anionic (SDS), cationic (DTAB), and nonionic (Tween 20), were investigated at 30 °C, and the cell concentration, pH value, leaching time, and coal biodesulfurization rate of the coal desulfurization system were detected. It is shown that the total desulfurization rate approached 29.7% in 16 days when 1100 mg/L Tween 20 was added in the shaking test, which represented the optimum efficiency. Further column leaching desulfurizating experiments showed that the desulfurization rate of the experimental group with Tween 20 (12.75%) was notably higher than that of the control group (8.32%). Along with the processing of desulfurization, the cell concentration decreased at first, and then rapidly increased, and finally stayed constant. The pH value of coal water slurry increased. The leaching time increased with the process of the desulfurization system. We concluded that the nonionic surfactant has a significant effect on coal biodesulfurization.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Research on the Effect of Surfactants on the Biodesulfurization of Coal

Zhang

Ren

et al. 2017

Energy Fuels

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“…Bacterial diversity of AMD collected from the Meitanba mine, Hunan province, China, was studied by different energy sources including coal, sulfur, ferrous sulfate, and a mixture of sulfur and ferrous sulfate (Yang et al, 2013a). The distribution of the microbial communities of the carbon group was more similar to the sulfur group than the sulfur+ferrous sulfate group.…”

Section: Biologicalmentioning

confidence: 99%

Mine Drainage: Characterization, Treatment, Modeling, and Environmental Aspect

Wei

Wolfe

Han

2014

Water Environment Research

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Globally, mine drainage is a persistent environmental problem facing the mining industry. This review covers the literature published in 2013 on topics relating to acid mine drainage (AMD) or acid rock drainage (ARD) due to the presence of sulfide bearing minerals in active and abandoned coal/hard rock mining sites or waste spoil piles. This review is divided into the four sections: 1) mine drainage characterization, 2) mine drainage treatment 3) modeling and simulation, and 4) environmental aspect. Mine Drainage Characterization Physicochemical Characterization. The characteristics of mine sites have profound impacts on the quality and quantity of acid mine drainage (AMD) or acid rock drainage (ARD), the toxicity of the contaminants, the fate and transport of the metals, and the required treatment or remediation methods. The mine drainage from the Globe-Progress gold mine, New Zealand, were circumneutral (pH 6-8) with high HCO 3 -and SO 4 2-(both up to 300 mg/L) and elevated As (0.5 mg/L) and Sb(~3 mg/L) (Druzbicka and Craw, 2013). The Sb/As ratio in the mine drainage ranged from 1 in historic mines, to ~30 below the modern mine. It was found mining methods and contrasting ore types had a dramatic effect on the metalloid contents. The characteristics of alkaline mine drainage from 11 active and abandoned mines were examined in the Lokpaukwu-Ishiagu mining areas of Nigeria, where very high concentrations of TDS, hardness, chloride, calcium,

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“…There are some desulfurizing bacteria, both organosulfur and inorganosulfur, discovered to be used in coal biodegradation. Examples of inorganosulfur bacteria such as Acidithiobacillus caldus , Acidithiobacillus ferrooxidans , Acidithiobacillus thiooxidans and examples of organosulfur desulfurizing bacteria such as Pseudomonas , Bacillus , and Rhodococcus were found . Dibenzothiophene (DBT) is one of the representatives of organic sulfur in coal .…”

Section: Introductionmentioning

confidence: 99%

“…Examples of inorganosulfur bacteria such as Acidithiobacillus caldus, Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans [10][11][12] and examples of organosulfur desulfurizing bacteria such as Pseudomonas, Bacillus, and Rhodococcus were found. 5,13,14 Dibenzothiophene (DBT) is one of the representatives of organic sulfur in coal. 15 There are two pathways, Kodama and sulfur-specific (4S), 16,17 that microbially degrade organic sulfur when the DBT is used as a model compound.…”

Section: Introductionmentioning

confidence: 99%

Biodesulfurization of coal using Rhodococcus erythropolis SX‐12 and Acidithiobacillus ferrooxidans GF: A two‐step approach

Yang

Zhang

et al. 2019

Energy Science & Engineering

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The sulfur of coal limits its clean utilization, while the biodesulfurization technology shows great development potential and application prospects for coal desulfurization. With a view to studying the different sulfur metabolism preferences of bacteria, two‐step bioleaching desulfurization of coal was proposed in this paper in which the organic sulfur desulfurizing bacteria and inorganic sulfur oxidizing bacteria were, respectively, used to remove sulfur from coal. An organic sulfur desulfurizing strain, Rhodococcus erythropolis SX‐12, was isolated from petroleum‐polluted soil collected from the Daqing Oilfield, which has been discovered to be capable of degrading dibenzothiophene (DBT) with an optimum temperature of 30°C and an initial pH of 7.0. Rhodococcus erythropolis SX‐12, as organic sulfur desulfurizing bacteria, were employed for the first step bioleaching desulfurization. Laboratory‐preserved Acidithiobacillus ferrooxidans GF, an inorganic sulfur oxidizing strain, was applied to second step bioleaching desulfurization. After conducting two‐step bioleaching, the sulfur content of the raw coal decreased from 4.973% to 1.729% and the total desulfurization rate of 65.23% was obtained after 30‐day incubation. Therefore, the “two‐step” leaching biodesulfurization test is more likely to provide a new strategy for the process design of biodesulfurization of coal.

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Bacterial Diversity Analysis of Coal Mine Drainage Enriched by Different Energy Sources

Cited by 5 publications

References 27 publications

Research on the Effect of Surfactants on the Biodesulfurization of Coal

Research on the Effect of Surfactants on the Biodesulfurization of Coal

Mine Drainage: Characterization, Treatment, Modeling, and Environmental Aspect

Biodesulfurization of coal using Rhodococcus erythropolis SX‐12 and Acidithiobacillus ferrooxidans GF: A two‐step approach

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