Evaluation of kinetic coefficients using integrated monod and haldane models for low-temperature acetoclastic methanogenesis

Lokshina, L. Ya.; Вавилин, В.А.; Kettunen, Riitta; Rintala, Jukka; Holliger, Christof; Ножевникова, А. Н.

doi:10.1016/s0043-1354(00)00595-9

Cited by 75 publications

(44 citation statements)

References 26 publications

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“…If these assays were repeated at different temperatures, the results could describe the relationship between ISPAD CH 4 production and temperature, another essential feature of the successful model. The present study indicates differences in this relationship for acclimated and non-acclimated communities, as previously reported [33,34]; however, the form of the relationship has not been confirmed. The essential role of H 2 could also be investigated in this way, as the H 2 pathway is expected to dominate methanogenesis during low-temperature acclimation, with the acetate pathway producing 95% of CH 4 once acclimation is complete [13].T h e data obtained from X o in the current study support this hypothesis with CH 4 produced concurrently with VFA accumulation, suggesting that H 2 is the major source of CH 4 in this partially acclimated system.…”

Section: Further Investigationcontrasting

confidence: 75%

In-storage psychrophilic anaerobic digestion of swine manure: Acclimation of the microbial community

King¹,

Barrington²,

Guiot³

2011

Biomass and Bioenergy

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Section: Further Investigationcontrasting

confidence: 75%

In-storage psychrophilic anaerobic digestion of swine manure: Acclimation of the microbial community

King¹,

Barrington²,

Guiot³

2011

Biomass and Bioenergy

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“…High acetate concentration is inhibitive for aceticlastic methanogenesis (Fukuzaki et al 1990a;Lokshina et al 2001). This phenomenon is known as an example of substrate inhibition.…”

Section: Introductionmentioning

confidence: 99%

Methanosarcina as the dominant aceticlastic methanogens during mesophilic anaerobic digestion of putrescible waste

Вавилин

Mazéas³

et al. 2008

Antonie van Leeuwenhoek

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Taking into account isotope (13)C value a mathematical model was developed to describe the dynamics of methanogenic population during mesophilic anaerobic digestion of putrescible solid waste and waste imitating Chinese municipal solid waste. Three groups of methanogens were considered in the model including unified hydrogenotrophic methanogens and two aceticlastic methanogens Methanosaeta sp. and Methanosarcina sp. It was assumed that Methanosaeta sp. and Methanosarcina sp. are inhibited by high volatile fatty acids concentration. The total organic and inorganic carbon concentrations, methane production, methane and carbon dioxide partial pressures as well as the isotope (13)C incorporation in PSW and CMSW were used for the model calibration and validation. The model showed that in spite of the high initial biomass concentration of Methanosaeta sp. Methanosarcina sp. became the dominant aceticlastic methanogens in the system. This prediction was confirmed by FISH. It is concluded that Methanosarcina sp. forming multicellular aggregates may resist to inhibition by volatile fatty acids (VFAs) because a slow diffusion rate of the acids limits the VFA concentrations inside the Methanosarcina sp. aggregates.

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“…The following inhibitions are included in the model: (i) acetoclastic methanogenesis can only take place within a narrow pH range, or within a certain range of concentration of acetic acid A, [3,10,17], (ii) hydrogenotrophic methanogenesis inhibition due to pH levels is incorporated as an inhibition due to high and low concentrations of acetic acid A, [15,17,19,25,30], and (iii) acetogenesis is inhibited by high partial pressure or abundance of hydrogen. Acetogenic conversion of monomers is only thermodynamically favorable under low partial pressures of hydrogen.…”

Section: Model Developmentmentioning

confidence: 99%

Optimal biogas production in a model for anaerobic digestion

2015

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We investigate a model for anaerobic digestion, a process used to produce biogas. The model, introduced in Weedermann et al. (J Biol Dyn 7:59-85, 2013), consists of differential equations describing the interactions of microbial populations involved in three main stages of anaerobic digestion: acidogenesis, acetogenesis, and methanogenesis. We show that this model predicts that an increased yield in biogas can be achieved in regions where operating parameters push the system into a bistable state. In some regions of bistability, biogas production occurs at only one of the steady states while in others both steady states result in biogas production with one state being more productive than the other. We demonstrate which operating parameters and state variables have the most significant impact on system performance. Surprisingly, the optimal biogas production does not always occur at a steady state where all classes of microorganisms coexist.

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Evaluation of kinetic coefficients using integrated monod and haldane models for low-temperature acetoclastic methanogenesis

Cited by 75 publications

References 26 publications

In-storage psychrophilic anaerobic digestion of swine manure: Acclimation of the microbial community

In-storage psychrophilic anaerobic digestion of swine manure: Acclimation of the microbial community

Methanosarcina as the dominant aceticlastic methanogens during mesophilic anaerobic digestion of putrescible waste

Optimal biogas production in a model for anaerobic digestion

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