Biodesulfurization of coal with Acidithiobacillus caldus and analysis of the interfacial interaction between cells and pyrite

He, Huan; Hong, Fen-fen; Tao, Xiuxiang; Li, Lei; Chen, Songjiang; Yang, Zhao

doi:10.1016/j.fuproc.2012.04.006

Cited by 47 publications

(16 citation statements)

References 28 publications

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“…In addition, HDS is difficult to remove heterocyclic organosulfur such as benzothiophene (BT), dibenzothiophene (DBT) and their derivatives. Due to these reasons, many groups [7][8][9][10] have been engaged in the exploitation of non-HDS technologies for transportation fuels, including extraction [11][12] , oxidation [13][14] , adsorption [15][16] , biological desulfurization [17][18] and others [19][20] .…”

Section: Introductionmentioning

confidence: 99%

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

et al. 2016

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The extractive desulfurization of thiophene (TS), dibenzothiophene (DBT), and benzothiophene (BT) in model oil was carried out using carboxylic acid-based deep eutectic solvents (DES). It was found that DES formed by formic acid as hydrogen bond donor and Tetrabutylammonium bromide (TBAB) as hydrogen bond acceptor could efficiently separate organosulfur from oils. The influence parameters in this process were discussed, such as extraction temperature, reaction time, mass ratio of DES to oil; multistage extraction effect; recycle times and regeneration of DES. The results showed that the desulfurization selectivity of TBAB/HCOOH followed the order TS < BT ≈DBT. Under the Optimized conditions, the sulfur removal of BT, DBT and TS were 81.75%, 80.47% and 72% in a single stage, respectively, and after three cycles, it will rise to 98.32%, 98.24% and 97.6%. The sulfur content in fuels can be achieved to less than 8.4, 8.8 and 12 ppm for BT, DBT and TS. In addition, by mechanism discussion, it was proved that hydrogen bonding between the sulfide and DES was the main driving force of the extraction desulfurization process.

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Section: Introductionmentioning

confidence: 99%

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

et al. 2016

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“…And the total sulfur removal rate of 65.23% was obtained, in which the removal rate of organic sulfur was 81.45%, inorganic sulfur of 38.78%. Although pyritic desulfurization was worse than some of the reported results, 13 total desulfurization of the two-step approach was better than the majority of other leaching test results, 10,24,30 which demonstrated that two-step biodesulfurization could further expand in future. Compared with the total desulfurization rate of 67.83% of our previous flotation-biodesulfurization method, the "two-step" bioleaching method was slightly lower than it, 18 but it was a more energy-saving and economical technology.…”

Section: "Two-step" Leaching Biodesulfurization Testmentioning

confidence: 54%

“…8,9 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 [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.…”

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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“…Lignite surface turned into corrosive morphology after desulfurization. He et al [161] also found similar results using Acidithiobacillus caldus in the desulfurization of Indonesia coal.…”

Section: Bio-beneficiationmentioning

confidence: 58%

Recent advances in beneficiation for low rank coals

2015

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Biodesulfurization of coal with Acidithiobacillus caldus and analysis of the interfacial interaction between cells and pyrite

Cited by 47 publications

References 28 publications

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

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

Recent advances in beneficiation for low rank coals

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