Improving coal bioavailability for biogenic methane production via hydrogen peroxide oxidation

Chen, Tianyu; Rodrigues, Sandra; Golding, Suzanne D.; Rudolph, Victor

doi:10.1016/j.coal.2018.06.011

Cited by 26 publications

(14 citation statements)

References 63 publications

(104 reference statements)

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“…63 3.4 | Potential application of enhanced biogenic methane production by H 2 O 2 pretreatment H 2 O 2 pretreatment has been proved to efficiently increase methane production from coal and other organic matters. 27 And a concept of in situ biogenic methane production by H 2 O 2 pretreatment has been proposed by Aramaki et al that the increment of biogenic methane production could be achieved by injecting fresh microflora after H 2 O 2 pretreatment. 24 However, the previous studies mainly focused on the biomethane production from liquid product of H 2 O 2 pretreatment.…”

Section: Dynamic Changes In Coal Crystal Structure During H 2 O 2 Pmentioning

confidence: 99%

“…Even for anthracite, the aromaticity and crystalline carbon content was improved by treating with 30% H 2 O 2 for 24 hours 26 . Chen et al concluded that the contents of VFAs and dissolved TOC in sub‐bituminous were surged by up to 28.2 and 22.3 times after pretreated with H 2 O 2 27 …”

Section: Introductionmentioning

confidence: 99%

“…Tamamura et al treated lignite with 0.3% H 2 O 2 resulting in the production of biomethane reached about 6 m 3 per ton of lignite 23 . Chen et al concluded that the biomethane yield from the liquid phase of subbituminous after treated by 50% H 2 O 2 can be boosted by a maximum of 10 times 27 . Wang et al found that after pretreated subbituminous coal with 3% H 2 O 2 for 30 days, the biomethane with a peak yield of 437.1 Scf/ton coal was obtained after 184 days of cultivation 29 .…”

Section: Introductionmentioning

confidence: 99%

“…26 Chen et al concluded that the contents of VFAs and dissolved TOC in sub-bituminous were surged by up to 28.2 and 22.3 times after pretreated with H 2 O 2 . 27 Several literatures have also reported that biomethane production was increased after treating coal with H 2 O 2 . Jones et al found that the conversion rate of H 2 O 2pretreated coal into biogenic methane was higher than that of unpretreated coal.…”

mentioning

confidence: 99%

“…23 Chen et al concluded that the biomethane yield from the liquid phase of subbituminous after treated by 50% H 2 O 2 can be boosted by a maximum of 10 times. 27 Wang et al found that after pretreated subbituminous coal with 3% H 2 O 2 for 30 days, the biomethane with a peak yield of 437.1 Scf/ton coal was obtained after 184 days of cultivation. 29 Most of the previous studies determined the biomethane production from liquid phase after H 2 O 2 pretreatment, little was known about the methane-producing potential of residual coal.…”

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confidence: 99%

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Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment

et al. 2020

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Summary The conversion of coal to methane by anaerobic microorganisms is an efficient, clean, and green way to utilize coal. However, methane production is relatively low due to the low bioavailability of coal. H2O2 has been demonstrated to increase methane production by transferring coal to liquid organics. Little is known about the bioavailability of residual coal after H2O2 pretreatment. Here, H2O2 was employed to pretreat anthracite, and the potential of residual coal to produce methane was analyzed. The optimum conditions for pretreatment were 30% H2O2 for 12 hours when the methane production reached 254.97 μmol/g coal, increased by 24.98% compared with that in unpretreated coal. The results of FTIR showed that the substitutions of aromatics, alkanes rings, aliphatics, and even C=C structure in coal were depolymerized and oxygen‐containing functional groups were generated after pretreatment with H2O2. The oxygen‐containing functional groups were further degraded by anaerobic microflora. The XRD results showed that the crystal structure of coal decreased after pretreatment with H2O2 following 27 days of cultivation. These results suggested that H2O2 pretreatment mainly altered coal by increasing the oxygen‐containing functional groups and decreasing the crystal structure of coal to facilitate coal biodegradation and enhance biomethane production. The effect of H2O2 on the production of biomethane was not only to produce easily degradable organics, but also to change the coal structure and promote the degradation of residual coal. Therefore, the enhancement of biomethane production by H2O2 pretreatment on surface bioconversion and underground coalbed methane mining should take the increase methane yield from residual coal into account.

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Section: Dynamic Changes In Coal Crystal Structure During H 2 O 2 Pmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment

et al. 2020

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Biogenic methane generation from Vietnamese coal after pretreatment with hydrogen peroxide

et al. 2021

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Summary The application of coal as a methanogenic substrate is limited due to its recalcitrant nature, thus, requiring pretreatment for increasing bioavailability of coal. This paper describes the pretreatment of Vietnamese coal from the Red River Basin. The coal sample was treated with 3% (vol/vol) hydrogen peroxide, which resulted in 45.4% (weight %) solubilization of coal and release of various organics into the liquid phase. This dissolved fraction was analyzed for total dissolved organic carbon, Fourier transform infrared spectroscopy, high‐performance size exclusion chromatography, and high‐performance liquid chromatography. The detailed analytical investigations revealed the presence of aliphatics and aromatics hydrocarbons in the liquid phase. Short‐chain organic acids, including oxalic, citric, malic, malonic, formic, and acetic acids were also observed. The dissolved fraction was subjected to methanogenesis. Methane generation achieved the peak at 218.5 μmol/g coal after 500 days of incubation. The effect of the pretreatment process on inorganic matter of the residual coal samples was also assessed using inductively coupled plasma mass spectrometry. The pretreatment caused a reduction in metal content of the residual coal sample. The findings of the paper can be prospected as a feasibility study of methane production from Vietnamese coal after its pretreatment using hydrogen peroxide.

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A review on microbial metabolism to increase coalbed methane generation and coal pretreatment to improve its bioavailability

Tang

Chen

et al. 2023

Front. Earth Sci.

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Improving coal bioavailability for biogenic methane production via hydrogen peroxide oxidation

Cited by 26 publications

References 63 publications

Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment

Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment

Biogenic methane generation from Vietnamese coal after pretreatment with hydrogen peroxide

A review on microbial metabolism to increase coalbed methane generation and coal pretreatment to improve its bioavailability

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Improving coal bioavailability for biogenic methane production via hydrogen peroxide oxidation

Cited by 26 publications

References 63 publications

Available methane from anthracite by combining coal seam microflora andH2O2pretreatment

Available methane from anthracite by combining coal seam microflora andH2O2pretreatment

Biogenic methane generation from Vietnamese coal after pretreatment with hydrogen peroxide

A review on microbial metabolism to increase coalbed methane generation and coal pretreatment to improve its bioavailability

Contact Info

Product

Resources

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Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment

Available methane from anthracite by combining coal seam microflora andH₂O₂pretreatment