Methanogenic fermentation of lignite with carbon-bearing additives, inferred from stable carbon and hydrogen isotopes

Bucha, Michał; Jędrysek, Mariusz-Orion; Kufka, Dominika; Pleśniak, Łukasz; Marynowski, Leszek; Kubiak, Katarzyna; Błaszczyk, Mieczysław

doi:10.1016/j.coal.2017.11.020

Cited by 29 publications

(10 citation statements)

References 58 publications

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“…In this study, the CH 4 production rate of the enriched microbial consortium was significantly improved by the addition of glucose (Figure 3A), which was consistent with findings in the literature that glucose could enhance CH 4 production in anaerobic digestion systems (Bucha et al, 2018;Maletic et al, 2018;Vu and Min, 2019;Li et al, 2021).…”

Section: Discussionsupporting

confidence: 91%

Co-metabolic Effect of Glucose on Methane Production and Phenanthrene Removal in an Enriched Phenanthrene-Degrading Consortium Under Methanogenesis

Zhou

Wang

et al. 2021

Front. Microbiol.

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Anaerobic digestion is used to treat diverse waste classes, and polycyclic aromatic hydrocarbons (PAHs) are a class of refractory compounds that common in wastes treated using anaerobic digestion. In this study, a microbial consortium with the ability to degrade phenanthrene under methanogenesis was enriched from paddy soil to investigate the cometabolic effect of glucose on methane (CH4) production and phenanthrene (a representative PAH) degradation under methanogenic conditions. The addition of glucose enhanced the CH4 production rate (from 0.37 to 2.25mg⋅L−1⋅d−1) but had no influence on the degradation rate of phenanthrene. Moreover, glucose addition significantly decreased the microbial α-diversity (from 2.59 to 1.30) of the enriched consortium but showed no significant effect on the microbial community (R2=0.39, p=0.10), archaeal community (R2=0.48, p=0.10), or functional profile (R2=0.48, p=0.10). The relative abundance of genes involved in the degradation of aromatic compounds showed a decreasing tendency with the addition of glucose, whereas that of genes related to CH4 synthesis was not affected. Additionally, the abundance of genes related to the acetate pathway was the highest among the four types of CH4 synthesis pathways detected in the enriched consortium, which averagely accounted for 48.24% of the total CH4 synthesis pathway, indicating that the acetate pathway is dominant in this phenanthrene-degrading system during methanogenesis. Our results reveal that achieving an ideal effect is diffcult via co-metabolism in a single-stage digestion system of PAH under methanogenesis; thus, other anaerobic systems with higher PAH removal efficiency should be combined with methanogenic digestion, assembling a multistage pattern to enhance the PAH removal rate and CH4 production in anaerobic digestion.

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Section: Discussionsupporting

confidence: 91%

Co-metabolic Effect of Glucose on Methane Production and Phenanthrene Removal in an Enriched Phenanthrene-Degrading Consortium Under Methanogenesis

Zhou

Wang

et al. 2021

Front. Microbiol.

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“…Processing coal to methanogenic substrates is the most difficult and rate-limiting step in biogenic methane production. Many efforts have been made at laboratory scales to stimulate lignite degradation by: (i) supplying additional nutrients, such as nitrogen or phosphorus-containing compounds, yeast extract, or trypticase soy broth to stimulate autochthonous microflora (Barnhart et al, 2013;Bucha et al, 2018;Opara et al, 2012), (ii) inoculation of microbes from methane-yielding environments under anaerobic conditions, like sewage waste-water sludge (Zheng et al, 2017), (iii) physical treatment such as ultrasonic wave excitation using nuclear magnetic resonance (Tang et al, 2016), or (iv) chemical treatment, e.g. with potassium permanganate (Huang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Lignite biodegradation under conditions of acidic molasses fermentation

Detman

Bucha

Simoneit

et al. 2018

International Journal of Coal Geology

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Lignite is difficult to degrade, thus stimulation of the autochthonous lignite microflora and introduction of additional microorganisms are required for lignite decomposition. Here, a packed bed reactor, filled with lignite samples from the Konin region (central Poland) was supplied continuously with M9 medium, supplemented with molasses (a by-product from the sugar industry), for 124 days to stimulate the autochthonous lignite microflora. Acidic fermentation of molasses was observed in the bioreactor. The simultaneous decomposition of lignite occurred under this acidic molasses fermentation condition. Our results show decay of free (non-bound) organic compounds during anaerobic lignite biodegradation. The concentrations of n-alkanes, n-alkanols, n-alkanoic acids, diterpenoids, triterpenoids and steroids present in non-biodegraded samples decreased significantly (some compounds to zero) during biodegradation. Interestingly, other compound classes like phenols, ketones and certain organic compounds increased. We interpret this phenomenon as a gradual decomposition of polymers, lignin and cellulose, present in the lignite. These changes resulted from microbial activity since they were not observed in pure solutions of short-chain fatty acids. The 16SrRNA profiling of the microbial community selected in the bioreactor revealed that the dominant bacteria belonged to the Firmicutes, Actinobacteria, Proteobacteria and Bacteroidetes, furthermore representatives of 16 other phyla were also found. All the known taxa of lignocellulolytic bacteria were represented in the microbial community. Synergistic relations between bacteria fermenting molasses and bacteria degrading lignite are assumed. The results confirm lignin degradation in acidic medium by bacteria under anaerobic conditions.

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“…Before biogasification of lignite can be used directly in the deposit, it must undergo rigorous laboratory tests (e.g., Ritter et al, 2015). It should be noted that research into biogasification of lignite in Poland has accelerated in recent years (e.g., Bucha et al, 2018;Detman et al, 2018 andSzafranek-Nakonieczna et al, 2018, and references therein).…”

Section: Discussionmentioning

confidence: 99%

“…1; Kasiński & Piwocki, 2002;Kasiński et al, 2006;Kasiński, 2010;Kasztelewicz, 2014;Widera et al, 2016). Methods other than conventional (opencast) ways of mining lignite in Poland have already receive a lot of attention in the literature (e.g., Stańczyk et al, 2011;Kasiński et al, 2012;Kasztelewicz et al, 2013;Matl et al, 2014;Bielowicz, 2016;Urbański & Saternus, 2017;Bucha et al, 2018;Detman et al, 2018;Szafranek-Nakonieczna et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Is the Złoczew lignite deposit geologically suitable for the first underground gasification installation in Poland?

Urbański

Widera

2020

Geologos

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The present study focuses on alternative methods of exploiting lignite in comparison to conventional opencast mining and combustion in power plants for the generation of electricity. In Poland, opencast lignite pits cover large areas, creating social and environmental conflicts. In order to stabilise the production level of electricity and reduce the negative effects of opencast mining, alternative ways of exploiting lignite are suggested, one of these being underground gasification in situ. The Złoczew lignite deposit, which will most likely be exploited in the near future, provides an opportunity to discuss the unconventional method of underground coal gasification (UCG). On the basis of technological and geological criteria that have been established to determine the suitability of Polish lignite for underground gasification, resources to be used this way have been estimated. Through gasification, over 15 million tonnes of lignite can be utilised, which is about 2.5 per cent of resources of the Złoczew deposit intended for opencast mining. With this in mind, we suggest to take action by starting a pilot installation, to be followed by a commercial one for underground gasification after completion of superficial mining. Naturally, any future application of this method will be preceded by assessment of geological conditions at the Złoczew opencast pit.

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Methanogenic fermentation of lignite with carbon-bearing additives, inferred from stable carbon and hydrogen isotopes

Cited by 29 publications

References 58 publications

Co-metabolic Effect of Glucose on Methane Production and Phenanthrene Removal in an Enriched Phenanthrene-Degrading Consortium Under Methanogenesis

Co-metabolic Effect of Glucose on Methane Production and Phenanthrene Removal in an Enriched Phenanthrene-Degrading Consortium Under Methanogenesis

Lignite biodegradation under conditions of acidic molasses fermentation

Is the Złoczew lignite deposit geologically suitable for the first underground gasification installation in Poland?

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