Methane fermentation process for utilization of organic waste

Frąc, Magdalena; Ziemiński, Krzysztof

doi:10.2478/v10247-012-0045-3

Cited by 30 publications

(18 citation statements)

References 71 publications

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“…Carbohydrates and proteins show faster conversion rates but lower gas yields, whereas lipids provide the highest biogas yield but require a long time due to their slow biodegradability. Gas with the highest content of methane (best in terms of quality) is obtained as a result of degradation of protein (Esposito et al, 2012;Frąc and Ziemiński, 2012;Momoh and Nwaogazie, 2011).…”

Section: Introductionmentioning

confidence: 99%

Development of optimum substrate compositions in the methane fermentation process

Lalak¹,

Kasprzycka²,

Paprota³

et al. 2015

International Agrophysics

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The aim of the study was to assess the potential of organic wastes from the agriculture and food industry as co-substrate for biogas production, on the basis of physical and chemical parameters analysis and biogas yield in the process of methane fermentation. The experimental material consisted of carrot pomace, kale by-products and maize silage. Methane fermentation was conducted in bioreactors equipped with an automatic control and measurement system. The study indicated correct physicochemical properties in terms of high content of dry organic matter and also correct C/N ratio. That was reflected in high biogas yields which amounted to, respectively, 558 N dm3kg−1VS−1for carrot pomace and kale by-products, and 526 N dm3kg−1VS−1for maize silage. The study showed that the intensity of biogas production was varied and depended on the composition of fermented mixtures. Methane fermentation of organic waste mixtures significantly increased the amount of biogas efficiency compared to the fermentation of individual substrates. The successful run of the experiment indicates that a mixture composed of carrot pomace and kale by-products is a good substrate for the production of biogas.

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Section: Introductionmentioning

confidence: 99%

Development of optimum substrate compositions in the methane fermentation process

Lalak¹,

Kasprzycka²,

Paprota³

et al. 2015

International Agrophysics

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“…This unrepeatable group of microorganisms has the capability to produce methane from basic substrates, such as CO 2 , H 2 , acetate or C1 compounds e.g. methanol, methylamines and methylthiols (Frąc and Ziemiński, 2012;Walter et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Dairy sewage sludge and fruit waste with high organic matter content (more than 60%) can be used in anaerobic digestion as a major source of renewable energy (Frąc and Ziemiński, 2012). Methanogenesis is an essential biochemical process involved in the mineralization of organic matter in anaerobic conditions and in degradation of certain toxins (Whang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Gryta¹,

Oszust²,

Brzezińska³

et al. 2017

International Agrophysics

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A b s t r a c t. The aim of the study was to elucidate the substantial relationship between the compositions of methanogen community that assembles in the anaerobic digester mass and link it to methane production activity. The results of the metagenomic studies were used to evaluate how the methanogen structure changes during an anaerobic digestion process under various waste retention times (21, 23, 25, 29, 33, 39, 47 and 61 days). Phylogenetically coherent populations of methanogens were assessed by 16S rRNA gene next-generation sequencing and terminal restriction fragment length polymorphism fingerprinting of a specific molecular marker, the mcrA gene. The results indicated multiple phylogenetically diverse methanogen populations associated with the various steps of anaerobic digestion. The stages of the anaerobic digestion process and waste retention times determine the microbial composition. The most dominant and acclimated microbial communities in all samples belonged to the genera Methanosaeta and Methanobacterium. The methane yield was consistent with the results of the microbial community structure, which indicated that acetotrophic Methanosaeta was the most active and most important during the methanogenic stage.K e y w o r d s: anaerobic digestion, methanogenic activity, methanogenic Archaea, NGS, t-RFLP

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“…As indicated in Table 2, in some cases the pH of the suspension dropped below 6.7, i.e., a value regarded as a threshold below which the biofermentation process is inhibited [48,49]. Carbon dioxide, which accumulated in the bottle and dissolved in the solution, forming HCO 3 -ions, was found to be a direct cause of suspension acidification [50].…”

Section: Choice Of the Optimal Bioreactor Loadingmentioning

confidence: 99%

Methodical Aspects of Biogas Production in Small-Volume Bioreactors in Laboratory Investigations

Kasprzycka

Kuna

2018

Energies

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The aim of this study was to develop a methodology to investigate the biofermentation process in small-volume fermenters. Dark serum bottles with a volume of 100-120 mL, tightly sealed with a rubber septum, were used as bioreactors. The optimum measurement conditions in this type of bioreactor comprise: (i) filling two-thirds of the maximum volume with a suspension; (ii) a 2% bioreactor loading (on a dry basis) and; (iii) the daily equalization of pressure by removing the biogas through the septum pierced with a syringe needle and the intensive mixing of the remaining suspension. The methane yield (quantity and dynamics) obtained in this type of bioreactor is analogous to that of industrial bioreactors or large-scale laboratory bioreactors. The use of small-volume bioreactors that can be incubated will facilitate the preliminary selection of analysed systems and provide an indication of those that should be investigated in large-scale bioreactors.

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Methane fermentation process for utilization of organic waste

Cited by 30 publications

References 71 publications

Development of optimum substrate compositions in the methane fermentation process

Development of optimum substrate compositions in the methane fermentation process

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Methodical Aspects of Biogas Production in Small-Volume Bioreactors in Laboratory Investigations

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