Characteristics of in-situ hydrogen biomethanation at mesophilic and thermophilic temperatures

Jiang, Hao; Wu, Fan; Wang, Yuchang; Feng, Lu; Zhou, Hongjun; Li, Yeqing

doi:10.1016/j.biortech.2021.125455

Cited by 28 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the thermophilic Methanobacterium thermoautotrophicus , can grow with CO as the sole energy source, although at very low growth rates (Ferry 2010 ). Members within the genus Methanobacterium have been found to dominate in several other studies on biomethanation in TBR at both mesophilic and thermophilic temperatures (Rachbauer et al 2017 ; Porté et al 2019 ) and in other processes during ex situ and in situ biomethanation of H 2 and syngas (Li et al 2020a ; Aryal et al 2021 ; Jiang et al 2021 ; Braga Nan et al 2022 ). In line with results in the present study, this genus has also been found on carrier biofilm (Rachbauer et al 2017 ; Thapa et al 2021 ).…”

Section: Discussionmentioning

confidence: 97%

Microbial community development during syngas methanation in a trickle bed reactor with various nutrient sources

Cheng¹,

Gabler

Pizzul

et al. 2022

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

Microbial community development within an anaerobic trickle bed reactor (TBR) during methanation of syngas (56% H2, 30% CO, 14% CO2) was investigated using three different nutrient media: defined nutrient medium (241 days), diluted digestate from a thermophilic co-digestion plant operating with food waste (200 days) and reject water from dewatered digested sewage sludge at a wastewater treatment plant (220 days). Different TBR operating periods showed slightly different performance that was not clearly linked to the nutrient medium, as all proved suitable for the methanation process. During operation, maximum syngas load was 5.33 L per L packed bed volume (pbv) & day and methane (CH4) production was 1.26 L CH4/Lpbv/d. Microbial community analysis with Illumina Miseq targeting 16S rDNA revealed high relative abundance (20–40%) of several potential syngas and acetate consumers within the genera Sporomusa, Spirochaetaceae, Rikenellaceae and Acetobacterium during the process. These were the dominant taxa except in a period with high flow rate of digestate from the food waste plant. The dominant methanogen in all periods was a member of the genus Methanobacterium, while Methanosarcina was also observed in the carrier community. As in reactor effluent, the dominant bacterial genus in the carrier was Sporomusa. These results show that syngas methanation in TBR can proceed well with different nutrient sources, including undefined medium of different origins. Moreover, the dominant syngas community remained the same over time even when non-sterilised digestates were used as nutrient medium. Key points •Independent of nutrient source, syngas methanation above 1 L/Lpbv/D was achieved. •Methanobacterium and Sporomusa were dominant genera throughout the process. •Acetate conversion proceeded via both methanogenesis and syntrophic acetate oxidation. Graphical abstract

show abstract

Section: Discussionmentioning

confidence: 97%

Microbial community development during syngas methanation in a trickle bed reactor with various nutrient sources

Cheng¹,

Gabler

Pizzul

et al. 2022

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…No studies appear to have used other livestock manures as a mono-substrate, although digestate from a 2-stage system fed on chicken manure was used to inoculate reactors receiving exogenous H 2 and CO 2 and to replenish buffering capacity during the enrichment stage [28].…”

Section: Livestock Manuresmentioning

confidence: 99%

Potential for Biomethanisation of CO2 from Anaerobic Digestion of Organic Wastes in the United Kingdom

et al. 2022

View full text Add to dashboard Cite

The United Kingdom (UK) has a decarbonisation strategy that includes energy from both hydrogen and biomethane. The latter comes from the growing anaerobic digestion (AD) market, which in 2020 produced 23.3 TWh of energy in the form of biogas. According to the strategy, this must be upgraded to biomethane by removal of carbon dioxide (CO2): a goal that could also be fulfilled through CO2 biomethanisation, alleviating the need for carbon capture and storage. Results are presented from a survey of publicly available datasets coupled with modelling to identify potential scale and knowledge gaps. Literature data were used to estimate maximum biomethane concentrations by feedstock type: these ranged from 79% for food wastes to 93% for livestock manures. Data from various government sources were used to estimate the overall potential for CO2 biomethanisation with current AD infrastructure. Values for the uplift in biomethane production ranged from 57% to 61%, but the need for more consistent data collection methodologies was highlighted. On average, however, if CO2 biomethanisation was applied in all currently operating UK AD plants an energy production uplift of 12,954 GWh could be achieved based on 2020 figures. This is sufficient to justify the inclusion of CO2 biomethanisation in decarbonisation strategies, in the UK and worldwide.

show abstract

“…Hydrogen biomethanation has been the subject of several studies, regarding both in situ [115] and ex situ [116] processes, and is considered an interesting alternative to the most common upgrading solutions. The combined production of hydrogen and methane is also becoming increasingly attractive for the development of Power-to-Gas (P2G) systems [117].…”

Section: Hydrogen To Biomethanementioning

confidence: 99%

A Review of the State of the Art of Biomethane Production: Recent Advancements and Integration of Renewable Energies

et al. 2021

View full text Add to dashboard Cite

Anaerobic Digestion (AD) is a well-established process that is becoming increasingly popular, especially as a technology for organic waste treatment; the process produces biogas, which can be upgraded to biomethane, which can be used in the transport sector or injected into the natural gas grid. Considering the sensitivity of Anaerobic Digestion to several process parameters, mathematical modeling and numerical simulations can be useful to improve both design and control of the process. Therefore, several different modeling approaches were presented in the literature, aiming at providing suitable tools for the design and simulation of these systems. The purpose of this study is to analyze the recent advancements in the biomethane production from different points of view. Special attention is paid to the integration of this technology with additional renewable energy sources, such as solar, geothermal and wind, aimed at achieving a fully renewable biomethane production. In this case, auxiliary heat may be provided by solar thermal or geothermal energy, while wind or photovoltaic plants can provide auxiliary electricity. Recent advancements in plants design, biomethane production and mathematical modeling are shown in the paper, and the main challenges that these fields must face with are discussed. Considering the increasing interest of industries, public policy makers and researchers in this field, the efficiency and profitability such hybrid renewable solutions for biomethane production are expected to significantly improve in the next future, provided that suitable subsidies and funding policies are implemented to support their development.

show abstract

Characteristics of in-situ hydrogen biomethanation at mesophilic and thermophilic temperatures

Cited by 28 publications

References 30 publications

Microbial community development during syngas methanation in a trickle bed reactor with various nutrient sources

Microbial community development during syngas methanation in a trickle bed reactor with various nutrient sources

Potential for Biomethanisation of CO2 from Anaerobic Digestion of Organic Wastes in the United Kingdom

A Review of the State of the Art of Biomethane Production: Recent Advancements and Integration of Renewable Energies

Contact Info

Product

Resources

About