Biogas

Plugge, Caroline M.

doi:10.1111/1751-7915.12854

Cited by 38 publications

(30 citation statements)

References 22 publications

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“…Biogas can be used for heat and electricity generation, and after an upgrading process, as a natural gas substitute or as transportation fuel. Biogas is obtained from the decomposition of urban, industrial, animal or agricultural organic wastes under anaerobic conditions, a process called anaerobic digestion (AD) [2].…”

Section: Introductionmentioning

confidence: 99%

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Borgne

Baquerizo

2019

ChemEngineering

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Bacterial communities’ composition, activity and robustness determines the effectiveness of biofiltration units for the desulfurization of biogas. It is therefore important to get a better understanding of the bacterial communities that coexist in biofiltration units under different operational conditions for the removal of H2S, the main reduced sulfur compound to eliminate in biogas. This review presents the main characteristics of sulfur-oxidizing chemotrophic bacteria that are the base of the biological transformation of H2S to innocuous products in biofilters. A survey of the existing biofiltration technologies in relation to H2S elimination is then presented followed by a review of the microbial ecology studies performed to date on biotrickling filter units for the treatment of H2S in biogas under aerobic and anoxic conditions.

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Section: Introductionmentioning

confidence: 99%

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Borgne

Baquerizo

2019

ChemEngineering

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“…Biogas production is an important renewable energy source and organic waste treatment technology (Plugge, 2017 ). For nitrogen-rich organic waste, the accumulation of ammonia can become a major problem.…”

Section: Introductionmentioning

confidence: 99%

Ammonia Inhibition of Anaerobic Volatile Fatty Acid Degrading Microbial Communities

et al. 2018

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Ammonia inhibition is an important reason for reactor failures and economic losses in anaerobic digestion. Its impact on acetic acid degradation is well-studied, while its effect on propionic and butyric acid degradation has received little attention and is consequently not considered in the Anaerobic Digestion Model No. 1 (ADM1). To compare ammonia inhibition of the degradation of these three volatile fatty acids (VFAs), we fed a mixture of them as sole carbon source to three continuous stirred tank reactors (CSTRs) and increased ammonium bicarbonate concentrations in the influent from 52 to 277 mM. The use of this synthetic substrate allowed for the determination of degradation efficiencies for the individual acids. While butyric acid degradation was hardly affected by the increase of ammonia concentration, propionic acid degradation turned out to be even more inhibited than acetic acid degradation with degradation efficiencies dropping to 31 and 65% for propionic and acetic acid, respectively. The inhibited reactors acclimatized and approximated pre-disturbance degradation efficiencies toward the end of the experiment, which was accompanied by strong microbial community shifts, as observed by amplicon sequencing of 16S rRNA genes and terminal restriction fragment length polymorphism (T-RFLP) of mcrA genes. The acetoclastic methanogen Methanosaeta was completely replaced by Methanosarcina. The propionic acid degrading genus Syntrophobacter was replaced by yet unknown propionic acid degraders. The butyric acid degrading genus Syntrophomonas and hydrogenotrophic Methanomicrobiaceae were hardly affected. We hypothesized that the ammonia sensitivity of the initially dominating taxa Methanosaeta and Syntrophobacter led to a stronger inhibition of the acetic and propionic acid degradation compared to butyric acid degradation and hydrogenotrophic methanogenesis, which were facilitated by the ammonia tolerant taxa Syntrophomonas and Methanomicrobiaceae. We implemented this hypothesis into a multi-taxa extension of ADM1, which was able to simulate the dynamics of both microbial community composition and VFA concentration in the experiment. It is thus plausible that the effect of ammonia on VFA degradation strongly depends on the ammonia sensitivity of the dominating taxa, for syntrophic propionate degraders as much as for acetoclastic methanogens.

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“…Biogas is a gaseous product (contains 50 -80% CH4, 15 -45% CO2, 5% H2O and some trace gases) that produced biologically through anaerobic digestion (AD) process that involved diverse of microbial communities that work syntrophycally in supporting a series of interrelated biochemical reactions (Bond and Templeton 2011;Plugge 2017;Calusinska et al 2018). Those four biochemical functions ( Fig.…”

Section: Conversion Steps In Anaerobic Digestionmentioning

confidence: 99%

The influence of microbial community dynamics on anaerobic digestion efficiency and stability: A Review

Amekan

2020

Int. J. Renew. Energy Dev.

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An essential component in sustainable energy development is the production of bioenergy from waste. The most successful bioenergy technology worldwide is anaerobic digestion (AD), which is a microbially-mediated process of organic feedstock conversion into energy-rich compounds (volatile fatty acids (VFA) and biogas) for renewable energy generation. AD is deployed in a range of situations including systems for on-farm energy recovery from animal and plant waste to the processing of food and municipal solid waste (with the additional benefit of land-fill reduction).Anaerobic digesters rely on a diverse microbial community working syntrophycally through a series of interrelated biochemical processes.Each stage in anaerobic digestion is carried out by different microbial groups. Thus, to optimise energy recovery from the AD process, the microbial community must have stable performance over time, balancing the various metabolic functions and taxonomic community composition in digesters. Complicating this balance, it has been found that the presence of ammonia, sulphate, and hydrogen sulphide in substantial concentrations often cause failure in the AD process. Thus, these substances cause adverse shifts in microbial community composition and/or inhibit bacterial growth, that influencing AD performance. ©2020. CBIORE-IJRED. All rights reserved

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Biogas

Cited by 38 publications

References 22 publications

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Ammonia Inhibition of Anaerobic Volatile Fatty Acid Degrading Microbial Communities

The influence of microbial community dynamics on anaerobic digestion efficiency and stability: A Review

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