Microorganisms in Coal Desulfurization (Review)

Котельников, В. Я.; Saryglar, Ch.A.; Chysyma, R.B.

doi:10.1134/s0003683820050105

Cited by 15 publications

(10 citation statements)

References 36 publications

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“…Unlike sulfate, the initial concentration of dibenzothiophene decreased with an increase in coal concentration, i.e., an average of 0.56, 0.51, and 0.27 mM, respectively, in 10%, 15%, and 20% coal medium. Organic sulfur such as dibenzothiophene is covalently bound to form large complex structures in coal (Kotelnikov et al, 2020). If the coal is more concentrated, the heating effect using autoclavingsterilization on coal degradation will decrease, resulting in less organic sulfur released into the medium.…”

Section: Resultsmentioning

confidence: 99%

“…The genus Pseudomonas is known to degrade various aromatic hydrocarbons. They were widely used as a bioremediation agent of environmental pollutants (Wasi et al, 2013) and a member of consortia in coal desulfurization (Kotelnikov et al, 2020;Makgato and Chirwa, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…Biodesulfurization is an alternative to minimize the tightly associated sulfur content associated with coal which works at medium temperature, hence lower operational cost. Most studies on coal biodesulfurization employ bacteria as the sulfur releasing agent, which is considered an economical and environmentally friendly technique (Jatoi et al, 2021;Kotelnikov et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Although it is suspected that their growth occurs very slowly, or even quiescent or dormant in the coal (Burke and Wiley, 1937), due to limited growth factors, their coexistence in coal over millions of years of maturation has resulted in a consortium of bacteria that even helps restructure coal carbon. Some studies demonstrating the effectiveness of microbial consortia in reducing sulfur content in coal were oriented to the final results (Kotelnikov et al, 2020). Biodesulfurization of a mixed culture bacteria worked more efficiently than physicochemical methods, lowering SO2 emissions by 72.4% and reducing ash content by 33% (Makgato and Chirwa, 2020).…”

Section: Introductionmentioning

confidence: 99%

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The Alternating Growth of Bacteria within a Consortium During Desulfurization of Coal

Pikoli

Aditiawati

Astuti

et al. 2021

Environ. Nat. Resour. J.

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Efforts to reduce organic sulfur in coal are taken through biodesulfurization by using desulfurization bacteria to release covalently-bound sulfur from the coal matrix. Coal is a complex hydrocarbon material that requires collaboration from more than one type of bacteria in a consortium for desulfurization. The current study shows how the individual members of a bacterial consortium obtained directly from coal samples grew on the coal. Mineral medium containing sub-bituminous coal with a concentration of 10%, 15%, and 20% served as a carbon source and the only sulfur to support the consortium's growth. The examination included growth patterns, concentrations of dibenzothiophene as an organic sulfur representative, pH, and sulfate concentration as the sulfur product released into the medium. The growth of individual members of the consortium was observed for 336 h. The consortium grew in all three coal concentrations with slightly different cell growth patterns and the release of dibenzothiophene. Members of the consortium grew alternately and overlapped, which showed possible linkages or dependence on products and existence from the growth of other members. The existence of the primary strain Moraxella osloensis COK1 indicated that they played a role in the activities and growth of other members. The alternating growth is discussed to produce a hypothetical illustration of how several other members play in using sulfur in a well-known desulfurization pathway. In conclusion, this study provides a deeper insight into the value of consortium members individually but growing together while swarming coal as a complex resource to become low-sulfur coal.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Alternating Growth of Bacteria within a Consortium During Desulfurization of Coal

Pikoli

Aditiawati

Astuti

et al. 2021

Environ. Nat. Resour. J.

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“…Low-rank coal is a low metamorphic degree coal with a lignin structure [1], which is abundant in the world [2,3]. Unfortunately, due to the high ash and volatile content of low-rank coal, the pollution caused by its direct combustion is serious [4][5][6][7]. Traditional low-rank coal treatment methods, such as gasi cation and pyrolysis, have the disadvantages of harsh process conditions and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Action modes of surfactants on biodegradation of Wudong low-rank coal by Pseudomonas aeruginosa

Liu

Shi

et al. 2022

Preprint

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Adding surfactants is an effective method to improve the biodegradation rate of coal. In this study, the action modes of nonionic Triton X-100, anionic surfactant SDS and cationic surfactant DTAB on the biodegradation of Xinjiang Wudong low-rank coal by Pseudomonas aeruginosa were investigated. By measuring cell membrane permeability and cell surface hydrophobicity of Pseudomonas aeruginosa, it was found that the permeability of cell membrane was enhanced under the action of Triton X-100, and reached the highest at 4 CMC, while SDS and DTAB inhibited the permeability of cell membrane. Cell surface hydrophobicity increased under the influence of Triton X-100, SDS and DTAB and reached a maximum at CMC. According to the effects of surfactants on the degradation rates of coal, it was shown that the improvement of cell membrane permeability could promote the degradation of coal, but the increase of cell surface hydrophobicity could inhibit the degradation of coal. When Triton X-100, SDS and DTAB were all at their optimal concentrations for the growths of Pseudomonas aeruginosa, the coal biodegradation rates reached 78.63 %, 55.93 % and 20.93 %, respectively. The adsorption experiment of bacteria on the coal surface and the low-temperature nitrogen adsorption experiment of coal presented that the improvement of permeability of cell membrane was the main factor for Triton X-100 to improve the coal degradation rate, even if it can slightly increase cell surface hydrophobicity. For SDS and DTAB, the decrease of cell membrane permeability and the increase of cell surface hydrophobicity are all not conducive to the biodegradation of coal.

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Indispensable role of coal as an energy source in Turkey with focus on biodesulphurization studies and advances

Mishra

Panda

Akçıl

2021

Case Studies in Chemical and Environmental Engineering

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Microorganisms in Coal Desulfurization (Review)

Cited by 15 publications

References 36 publications

The Alternating Growth of Bacteria within a Consortium During Desulfurization of Coal

The Alternating Growth of Bacteria within a Consortium During Desulfurization of Coal

Action modes of surfactants on biodegradation of Wudong low-rank coal by Pseudomonas aeruginosa

Indispensable role of coal as an energy source in Turkey with focus on biodesulphurization studies and advances

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