Methane fermentation process as anaerobic digestion of biomass: Transformations, stages and microorganisms

Ziemiński, Krzysztof

doi:10.5897/ajbx11.054

Cited by 60 publications

(30 citation statements)

References 39 publications

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“…Biomass anaerobic digestion processes to produce biogas have several advantages [1]: i) First, they allow converting the energy contained in biomass into a useful fuel (biogas) which may be stored and transported. Biogas is a mixture principally formed by methane (CH4) and carbon dioxide (CO2) and traces of other gases and organic acids of low molecular weight [2].…”

Section: Introductionmentioning

confidence: 99%

Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Carotenuto¹,

Guarino²,

Minale³

et al. 2016

IJHT

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Anaerobic digestion is an established technology to simultaneously produce biogas and treat different kinds of wastes. This work deals with water buffalo manure digested under mesophilic (37°C) and thermophilic (55°C) conditions with initial pH varying from 6.0 to 8.7. The digestion is investigated following the evolution of the biogas composition in time, in terms of the volume fraction of CH4, CO2 and their ratio. The growths of the biogas products are interpolated with a Gompertz equation and in all the investigated cases the methane productivity is above 63% with a CH4/CO2 ratio rather high and equal to about 2. In mesophilic conditions, an initial pH of 7.0 must be preferred to optimize the methane yield and to minimize the time required to attain it. The thermophilic conditions resulted very promising since they almost halved the time required to reach the final yield. The speed up of the process at 55°C, in our case, resulted to be due to the increase of the digestion kinetic more than to the selection of a new metabolic pathway.

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Section: Introductionmentioning

confidence: 99%

Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Carotenuto¹,

Guarino²,

Minale³

et al. 2016

IJHT

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“…Due to the complexity of successive quantitative and qualitative changes in a consortium of microorganisms in a fermentation biomass and the multiplicity of metabolic pathways leading to the production of biogas, the biotechnology of this process has not yet been fully described Ziemiński and Frąc 2012).…”

Section: Introductionmentioning

confidence: 99%

Characterization and Influence of a Multi-enzymatic Biopreparation for Biogas Yield Enhancement

Oszust¹,

Pawlik²,

Janusz³

et al. 2017

BioResources

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A multi-enzymatic biopreparation of Trichoderma atroviride G79/11 origin was characterized. The fungus showed relatively high cellulase production in a soybean flour-cellulose-lactose medium. Subsequently, based on its post-culture liquid, the biopreparation of the enzyme mixture was developed and characterized. The liquid form of the enzyme mixture reached 22 U cm -3 of cellulolytic activity and its lyophilisate exhibited 1.09 U cm -3 at pH 5.1 and 50 °C. The enzyme mixture was characterized by the following activities: xylanase, β-glucosidase, carboxymethyl cellulase, polygalactouronase, pectinesterase, amylase, lactase, and protease. A method for an efficient conditioning process of organic waste (fruit processing waste, dairy sewage sludge, corn silage, and grain broth) for biogas yield enhancement using the enzyme mixture was proposed. The enzyme mixture increased the efficacy of biogas production by 30% when the lyophilizate (0.5 mg g -1 d.m.) was applied prior to fermentation. A method for conducting the enzymatic conditioning process of organic waste using the enzyme mixture as a pretreatment was proposed. This was part of the optimization of the methane fermentation process to increase the biogas yield. Consequently, after application of the biopreparation, the efficiency of anaerobic digestion of organic waste was improved.

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“…The pH increased in all experiments from acid to neutral as a result of the initial presence of organic acids in both digestate and OFUSW (Ziemiński and Frac, 2012) and at the end of the process they were consumed and probably ammonia was also produced.…”

Section: Assays At the Bench Scale Bioreactormentioning

confidence: 92%

Composting a digestate from the organic fraction of urban solid wastes

Espinosa-Salgado¹,

Saucedo‐Castañeda²,

Monroy³

2020

Rev.Mex.Ing.Quim.

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Methane fermentation process as anaerobic digestion of biomass: Transformations, stages and microorganisms

Cited by 60 publications

References 39 publications

Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Biogas Production from Anaerobic Digestion of Manure at Different Operative Conditions

Characterization and Influence of a Multi-enzymatic Biopreparation for Biogas Yield Enhancement

Composting a digestate from the organic fraction of urban solid wastes

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