A critical review on global trends in biogas scenario with its up-gradation techniques for fuel cell and future perspectives

Devaraj, Thiruselvi; Kumar, P. Senthil; Kumar, Madhava Anil; Lay, Chyi-How; Aathika, Salma; Mani, Yuvarani; Jagadiswary, D.; Dhanasekaran, Anuradha; Palaniyandi, Shanmugam; Sivanesan, S.; Show, Pau Loke

doi:10.1016/j.ijhydene.2020.10.023

Cited by 66 publications

(18 citation statements)

References 89 publications

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“…By the end of 2030, Germany will be producing near about 10 billion m 3 biogas. In India, 4.9 million digesters with a two million m 3 biogas production capacity are present (Thiruselvi et al, 2021). India has planned to target renewable energy at 275 gigawatts by the end of 2027 (Thiruselvi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…In India, 4.9 million digesters with a two million m 3 biogas production capacity are present (Thiruselvi et al, 2021). India has planned to target renewable energy at 275 gigawatts by the end of 2027 (Thiruselvi et al, 2021). Several initiatives have also been taken up by the Indian Government like the Sustainable Alternative toward Affordable Transportation (SATAT) initiative to secure the off-take of compressed biomethane, the National Policy on Biofuels (2018) for financing as well as fiscal incentives, and Motor vehicles rule to promote the usage of BioCNG in motor vehicles.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, biogas upgradation is essential to make it a high-quality fuel. To this end, several technologies based on absorption, adsorption, and membrane separation approaches have come up over the years (Kadam and Panwar, 2017;Angelidaki et al, 2018;Sahota et al, 2018;Thiruselvi et al, 2021). Water scrubbing is the most feasible, but it is not considered economical and sustainable due to high capital costs and freshwater requirements.…”

Section: Introductionmentioning

confidence: 99%

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Biogas Upgradation Through CO2 Conversion Into Acetic Acid via Microbial Electrosynthesis

2021

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Biogas is one of the promising futuristic renewable energy sources with enormous market potential. However, the presence of CO2 lowers down the calorific value of biogas. Hence, various biogas upgradation technologies are under intense investigation to increase the methane content to the desired level. This study reports on enhancing methane content in biogas through CO2 sequestration into acetic acid via microbial electrosynthesis (MES) process. The previously enriched mixed chemolithoautotrophic microbial culture dominated by Acetobacterium spp. used CO2 present in the biogas as the sole carbon source. After establishing a stable performing biocathode at a fixed cathodic potential of −1 V (vs. Ag/AgCl) through batch mode operation, biogas was fed continuously at different feed rates, viz., 0.5, 0.3, and 0.2 ml/min to the cathode chamber. The highest feed rate of 0.5 ml/min was least effective both for methane content increment (from 61 ± 3% to 86 ± 2%) and acetic acid titer (1.5 ± 0.5 g/L; 0.107 ± 0.02 g/L/d.). In comparison, the lowest flow rate of 0.2 ml/min was the most effective for the intended process (methane upgradation from 62 ± 7% to 93 ± 3% and acetic acid titer 3.4 ± 0.6 g/L produced at 0.24 ± 0.04 g/L/d rate). Both acetic acid bioproduction and biogas upgradation occurred best at an Ecell of 3.3 ± 0.35 V at the low feed rate. A maximum of 84 ± 7%, 57 ± 10% and 29 ± 2% coulombic, carbon and energetic efficiencies, respectively, were achieved in acetic acid. Cyclic voltammograms of biocathodes revealed the decrease in hydrogen evolution potential and increased bioelectrocatalysis, thereby suggesting the contribution of microbes in the process. Acetobacterium, which is known for CO2 fixation, was found to be the dominant microbial genus in biogas fed reactors. The demonstrated approach not only offers the advantage of obtaining two products, one in the bulk phase and the other in the off-gas, it also validates the applicability of the bioelectrochemical biogas upgradation technology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biogas Upgradation Through CO2 Conversion Into Acetic Acid via Microbial Electrosynthesis

2021

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“…The extensive body of research on SOFCs is mostly motivated by the fact that they can efficiently generate electricity over a wide temperature range, do not contain liquid phases, do not require the presence of noble metals and allow for the use of various types of fuels [ 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. An SOFC unit is a multilayered structure consisting of an ionic conductor (electrolyte) between two electrodes, an anode and a cathode ( Figure 1 ).…”

Section: Brief Descriptions Of Sofcsmentioning

confidence: 99%

Undoped Sr2MMoO6 Double Perovskite Molybdates (M = Ni, Mg, Fe) as Promising Anode Materials for Solid Oxide Fuel Cells

et al. 2021

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The chemical design of new functional materials for solid oxide fuel cells (SOFCs) is of great interest as a means for overcoming the disadvantages of traditional materials. Redox stability, carbon deposition and sulfur poisoning of the anodes are positioned as the main processes that result in the degradation of SOFC performance. In this regard, double perovskite molybdates are possible alternatives to conventional Ni-based cermets. The present review provides the fundamental properties of four members: Sr2NiMoO6-δ, Sr2MgMoO6-δ, Sr2FeMoO6-δ and Sr2Fe1.5Mo0.5O6-δ. These properties vary greatly depending on the type and concentration of the 3d-element occupying the B-position of A2BB’O6. The main emphasis is devoted to: (i) the synthesis features of undoped double molybdates, (ii) their electrical conductivity and thermal behaviors in both oxidizing and reducing atmospheres, as well as (iii) their chemical compatibility with respect to other functional SOFC materials and components of gas atmospheres. The information provided can serve as the basis for the design of efficient fuel electrodes prepared from complex oxides with layered structures.

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“…When microalgae produce biohydrogen, their biomass can be further fermented to produce biogas (Thiruselvi et al, 2020;Lin et al, 2021). The combination of fermentation and anaerobic digestion can produce biomethane.…”

Section: Two-step Process For Co-production Of Biohydrogen and Biogasmentioning

confidence: 99%

Microalgae: The Future Supply House of Biohydrogen and Biogas

et al. 2021

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The non-renewable nature of fossil energy and the environmental pollution caused by its use, such as haze, make it very urgent to develop clean and efficient renewable energy. By using microalgae biomass as an alternative raw material energy sources like biohydrogen, methane can be produced through fermentation and photosynthesis. Unlike solar energy, which has the disadvantages of low energy density, instability and difficulty in storage, biohydrogen and biogas are one of the novel ideal energy sources at present. The utilization of microalgae has various attractive prospects in their production due to its cost-effectiveness, renewable biomass and ease of scaling-up technology. This paper discusses the latest microalgae biomass biohydrogen and biogas production technology including integrated biorefinery systems, co-production or mixed production techniques and puts forward the key problems to be solved in the development of microalgae biohydrogen production technology.

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A critical review on global trends in biogas scenario with its up-gradation techniques for fuel cell and future perspectives

Cited by 66 publications

References 89 publications

Biogas Upgradation Through CO2 Conversion Into Acetic Acid via Microbial Electrosynthesis

Biogas Upgradation Through CO2 Conversion Into Acetic Acid via Microbial Electrosynthesis

Undoped Sr2MMoO6 Double Perovskite Molybdates (M = Ni, Mg, Fe) as Promising Anode Materials for Solid Oxide Fuel Cells

Microalgae: The Future Supply House of Biohydrogen and Biogas

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