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Fermentation enhancement of methanogenic archaea consortia from an Illinois basin coalbed via DOL emulsion nutrition.

Xiao D, Peng SP, Wang EY - PLoS ONE (2015)

Bottom Line: Microbially enhanced coalbed methane technology must be used to increase the methane content in mining and generate secondary biogenic gas.In this technology, the metabolic processes of methanogenic consortia are the basis for the production of biomethane from some of the organic compounds in coal.To enhance the methane production rates for microorganism consortia, different types of nutrition solutions were examined in this study.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiang Su province, China.

ABSTRACT
Microbially enhanced coalbed methane technology must be used to increase the methane content in mining and generate secondary biogenic gas. In this technology, the metabolic processes of methanogenic consortia are the basis for the production of biomethane from some of the organic compounds in coal. Thus, culture nutrition plays an important role in remediating the nutritional deficiency of a coal seam. To enhance the methane production rates for microorganism consortia, different types of nutrition solutions were examined in this study. Emulsion nutrition solutions containing a novel nutritional supplement, called dystrophy optional modification latex, increased the methane yield for methanogenic consortia. This new nutritional supplement can help methanogenic consortia form an enhanced anaerobic environment, optimize the microbial balance in the consortia, and improve the methane biosynthesis rate.

No MeSH data available.


Related in: MedlinePlus

Methane and carbon dioxide concentration changes in a methanogenic consortia cultured with nutrition solution #1 at 39°C and pH 6.40.
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pone.0124386.g005: Methane and carbon dioxide concentration changes in a methanogenic consortia cultured with nutrition solution #1 at 39°C and pH 6.40.

Mentions: Carbon dioxide is an important intermediate in the coal fermentation process and the main carbon source of methanogens. Thus, it is important to monitor the concentration of carbon dioxide in mixed gas as it affects the stability of methanogenic consortia. Initially, the carbon dioxide concentration increased more rapidly than the methane concentration under the conditions described above (Fig 5). This phenomenon indicates a higher reproductive rate for the hydrolytic bacteria compared to the methanogenic bacteria. The metabolic activity of the methanogens quickly consumed the available carbon dioxide. For this reason, the carbon dioxide production rate limited the growth and metabolism of the methanogenic bacteria and therefore limited the production of methane. Thus, the microbial balance between the methanogenic and hydrolytic bacteria consortia needs to be optimized to efficiently produce the desired methane. The different growth rates and balance between the two systems are thus important factors that require close monitoring.


Fermentation enhancement of methanogenic archaea consortia from an Illinois basin coalbed via DOL emulsion nutrition.

Xiao D, Peng SP, Wang EY - PLoS ONE (2015)

Methane and carbon dioxide concentration changes in a methanogenic consortia cultured with nutrition solution #1 at 39°C and pH 6.40.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4401573&req=5

pone.0124386.g005: Methane and carbon dioxide concentration changes in a methanogenic consortia cultured with nutrition solution #1 at 39°C and pH 6.40.
Mentions: Carbon dioxide is an important intermediate in the coal fermentation process and the main carbon source of methanogens. Thus, it is important to monitor the concentration of carbon dioxide in mixed gas as it affects the stability of methanogenic consortia. Initially, the carbon dioxide concentration increased more rapidly than the methane concentration under the conditions described above (Fig 5). This phenomenon indicates a higher reproductive rate for the hydrolytic bacteria compared to the methanogenic bacteria. The metabolic activity of the methanogens quickly consumed the available carbon dioxide. For this reason, the carbon dioxide production rate limited the growth and metabolism of the methanogenic bacteria and therefore limited the production of methane. Thus, the microbial balance between the methanogenic and hydrolytic bacteria consortia needs to be optimized to efficiently produce the desired methane. The different growth rates and balance between the two systems are thus important factors that require close monitoring.

Bottom Line: Microbially enhanced coalbed methane technology must be used to increase the methane content in mining and generate secondary biogenic gas.In this technology, the metabolic processes of methanogenic consortia are the basis for the production of biomethane from some of the organic compounds in coal.To enhance the methane production rates for microorganism consortia, different types of nutrition solutions were examined in this study.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiang Su province, China.

ABSTRACT
Microbially enhanced coalbed methane technology must be used to increase the methane content in mining and generate secondary biogenic gas. In this technology, the metabolic processes of methanogenic consortia are the basis for the production of biomethane from some of the organic compounds in coal. Thus, culture nutrition plays an important role in remediating the nutritional deficiency of a coal seam. To enhance the methane production rates for microorganism consortia, different types of nutrition solutions were examined in this study. Emulsion nutrition solutions containing a novel nutritional supplement, called dystrophy optional modification latex, increased the methane yield for methanogenic consortia. This new nutritional supplement can help methanogenic consortia form an enhanced anaerobic environment, optimize the microbial balance in the consortia, and improve the methane biosynthesis rate.

No MeSH data available.


Related in: MedlinePlus