Biomethane: The energy storage, platform chemical and greenhouse gas mitigation target

Bagi, Zoltán; Ács, Norbert; Böjti, Tamás; Kakuk, Balázs; Rákhely, Gábor; Strang, Orsolya; Szuhaj, Márk; Wirth, Roland; Kovács, Kornél L.

doi:10.1016/j.anaerobe.2017.03.001

Cited by 34 publications

(24 citation statements)

References 52 publications

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“…The equilibrium between H 2 producers and consumers is crucial in methanogenesis (Wirth et al, 2012;Szuhaj et al, 2016;Bagi et al, 2017). The relative numbers of identified hydrogenase genes were nearly equal in the three reactors ( Figure 7D) (Supplementary Table 3, purple color).…”

Section: Metagenome Based Functional Changesmentioning

confidence: 95%

Characterization of Core Microbiomes and Functional Profiles of Mesophilic Anaerobic Digesters Fed With Chlorella vulgaris Green Microalgae and Maize Silage

et al. 2019

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Microalgal biomass is an alternative feedstock for biogas production although its C/N ratio is usually lower than optimal, therefore co-fermentation is recommended. Biogas production from photoautotrophically grown Chlorella vulgaris (C. vulgaris) biomass (240 mL CH 4 g oTS −1 ) and co-fermentation with maize silage (330 mL CH 4 g oTS −1 ) has been studied in semi continuous laboratory biogas fermenters. Maize silage control yielded 310 mL CH 4 g oTS −1 . The microbial community and the read-based functional profiles, derived from these data, were examined during the process by using next-generation metagenome Ion Torrent sequencing technology. The read-based core microbiome consisted of 92 genera from which 60 abundant taxa were directly associated with the microbial methane producing food chain. The data-set was also analyzed in a genome-based approach. Sixty-five bins were assembled, 52 of them belonged in the core biogas producing genera identified by the read-based metagenomes. The read-based and genome-based approaches complemented and verified each other. The functional profiles indicated a variety of glycoside hydrolases. Substantial rearrangements of the methanogen functions have also been observed. Co-fermentation of algal biomass and plant biomass can be carried out for an extended period of time without process failure. The microbial members of the inoculum are well-conserved, feedstock composition changes caused mostly relative abundance alterations in the core microbiome.

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Section: Metagenome Based Functional Changesmentioning

confidence: 95%

Characterization of Core Microbiomes and Functional Profiles of Mesophilic Anaerobic Digesters Fed With Chlorella vulgaris Green Microalgae and Maize Silage

et al. 2019

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“…On the other hand, solid digestate fertilizes and improves agricultural soil structures, while reducing the risk of agro-chemical pollution of surface and groundwater [13]. It is also transformed into compost after maturation or used as a substrate for the production of lombricompost and fungus.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Biogas Production Potential by Anaerobic Digestion of Fermentable Agricultural Residues in Côte d’Ivoire

Abo¹,

Kalakodio²,

Bakayoko³

2017

Int J Waste Resour

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IntroductionAnaerobic digestion is the natural biological process of organic matter's degradation in absence of oxygen (anaerobic). Some of the organic matter is degraded to methane, and another is used by the methanogenic microorganisms for their growth and reproduction. The decomposition is not complete and leaves the "digestate".Naturally, it occurs in some sediments, marshes, rice fields, and in the digestive tract of certain animals: insects (termites) or vertebrates (ruminants). Anaerobic digestion is also a technique artificially applied by men in digester where the process is accelerated and maintained to produce a usable methane (biogas, referred to as biomethane after purification).The great interest of methanisation plants on farms is the diversification of their production, through the generation of renewable energy (from biogas) in the organic amendments' production through optimized treatment of the organic waste from the farm. Anaerobic digestion is particularly interesting in the context of precarious countries, as in the case of Côte d'Ivoire, not only because it contributes to the treatment of fermentable organic residues and to the management of pollution, but also because it offers, through its main products (biogas as a source of energy and solid digestate as an organic soil amendment), solutions and income-generating options. This method of treatment is applicable to a wide range of cellulosic organic wastes, including cow dung, poultry manure, pig manure, human excreta, plant residues, fermentable fractions of household refuse and industrial waste agrifoodstuffs are characterized by their aptitude for recovery by aerobic and anaerobic biological treatments and a relatively rapid decomposition especially in the climates of intertropical countries. Also, these residues contribute to the emission of unpleasant odors, air pollution, pollution of ground and surface waters, and the proliferation of insect vectors of diseases. Anaerobic digestion is therefore an interesting alternative especially for rural areas because of its potential for production from AbstractAnaerobic digestion is the natural biological process of organic matter's degradation in absence of oxygen (anaerobic). In this work we estimated the potential of biogas production by anaerobic digestion of fermentable residues from agricultural origin in Côte d'Ivoire. To date, no quantitative estimation or physicochemical parameters of agricultural residues have been undertaken on a national scale in Côte d'Ivoire.This work gives an initial contribution to the estimation of biogas production potential by the anaerobic digestion process of agricultural residues. It was developed on the basis of statistical data from FAO (Food and Agriculture Organization of the United Nations) and other structures related to agricultural production.This study revealed that total agricultural residues were estimated to be more than 5.0 × 10 6 tons of organic matter or the equivalent of more than 10 × 10 8 m 3 of methane in terms of potential energy by ...

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“…In addition, we used relevant findings from academic articles that cover specific aspects to enrich our review (see Table 1) and deliver on the discussion of technical potentials and micro-economic cost aspects of renewable gas. Statistics and databases [4,[44][45][46][47] Renewable gas production technology [8,9,[49][50][51][52][53][54] Technical potentials [10,13,55] Economic considerations [15,56,57] Legal/regulatory background [31,32,36,37,[58][59][60][61][62] Methane leakage [63][64][65] Energy storage technologies and potentials [66][67][68] Hydrogen as an energy vector [69][70][71][72] Implications and developments on end-user side [73][74][75][76][77] Electricity grid issues [78,79] Policy considerations…”

Section: Methodsmentioning

confidence: 99%

How and to which extent can the gas sector contribute to a climate-neutral European energy system? A qualitative approach.

Lebelhuber

Steinmüller

2019

Preprint

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Background: Mitigating climate change requires fundamentally redesigned energy systems where renewable energy sources ultimately replace fossil fuels such as natural gas. In this context, the question how and to which extent the gas sector can contribute to an increasingly climate-neutral future EU energy system is heavily debated among scholars, energy industry experts and policymakers. Methods: We take a two-step approach: We begin with a review of studies from energy industry and academia to discuss potential gas sector contributions from a holistic energy system design point of view; this is followed by a comprehensive discussion of technical potentials, micro-economic conditions and societal implications of renewable gas. We then enrich our findings with the results of an empirical focus group process. Results: The gas sector may not only contribute to balancing volatile renewable energy production but also enable the supply of renewable energy to end-users in gaseous form; based on existing infrastructure. This could reduce costs for society, increase public acceptance and ultimately speed up the energy system transformation. There is the technical potential to substitute major parts of natural gas with renewable gas of biogenic and synthetic nature. While this will require public support, we observe this requirement in a comparable magnitude also for renewable electricity. Conclusion: Given the societal benefits and the competitiveness of renewable gas as compared to renewable alternatives, energy policymakers should incorporate renewable gas and the existing gas infrastructure in the overall energy system framework. The objective should be an optimized interplay of various energy vectors and its infrastructure along the entire energy supply chain. This requires a level playing field for different renewable technologies throughout different policy areas and a form of public support that strikes the balance between facilitating the gradual substitution of natural gas by renewable gas while maintaining public acceptance for this transformation despite realistically higher costs for end-users.

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Biomethane: The energy storage, platform chemical and greenhouse gas mitigation target

Cited by 34 publications

References 52 publications

Characterization of Core Microbiomes and Functional Profiles of Mesophilic Anaerobic Digesters Fed With Chlorella vulgaris Green Microalgae and Maize Silage

Characterization of Core Microbiomes and Functional Profiles of Mesophilic Anaerobic Digesters Fed With Chlorella vulgaris Green Microalgae and Maize Silage

Evaluation of the Biogas Production Potential by Anaerobic Digestion of Fermentable Agricultural Residues in Côte d’Ivoire

How and to which extent can the gas sector contribute to a climate-neutral European energy system? A qualitative approach.

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