Pilot-scale biomethanation in a trickle bed reactor: Process performance and microbiome functional reconstruction

Tsapekos, Panagiotis; Treu, Laura; Campanaro, Stefano; Centurion, Victor Borin; Zhu, Xinyu; Peprah, Maria; Zhang, Zengshuai; Kougias, Panagiotis; Angelidaki, Irini

doi:10.1016/j.enconman.2021.114491

Cited by 51 publications

(37 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since biological upgrading technologies employ excess electricity from renewable sources and utilize microorganisms as biocatalysts for the valorization of CO 2 into biomethane, they will probably be the dominant biogas upgrading technologies in regions with high penetration of renewable electricity production and will contribute to accelerate the sustainable development of MP production. Once the sustainability of the technologies which couple renewable H 2 with biogenic CO 2 is validated for the biogas sector, a wider exploitation can be attempted at industries producing fossil-based CO 2 (e.g., cement, and lime industries) [180]. These CO 2 -producing industries can improve their environmental footprint and be more sustainable.…”

Section: Comparing Different Technologies For Coupling Biogas Upgradi...mentioning

confidence: 99%

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Khoshnevisan

et al. 2022

Renewable and Sustainable Energy Reviews

Self Cite

View full text Add to dashboard Cite

Section: Comparing Different Technologies For Coupling Biogas Upgradi...mentioning

confidence: 99%

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Khoshnevisan

et al. 2022

Renewable and Sustainable Energy Reviews

Self Cite

View full text Add to dashboard Cite

“…The upgrading process was considered to take place in a trickle-bed reactor (TBR) under thermophilic conditions [29]. The gas retention time (GRT) and the packing material are two essential parameters for the optimal conversion of CO 2 and H 2 into CH 4 .…”

Section: Biological Biogas Upgradingmentioning

confidence: 99%

Techno-Economic Assessment of Biological Biogas Upgrading Based on Danish Biogas Plants

et al. 2021

Self Cite

View full text Add to dashboard Cite

Biological biogas upgrading with H2 derived from excess renewable electricity was modeled and simulated in PROII® (AVEVA Group plc, Cambridge, UK). An economic analysis was performed for a biogas plant processing 100,000 tons of biomass (substrate) per year. The biogas and biomethane production simulation results were validated with laboratory experimental data, as well as full-scale data obtained from biogas plants. A biomethane production cost of 0.47 €/Nm3 was calculated, while the minimum biomethane selling price for NPV = 0 was equal to 0.66 €/Nm3, considering a H2 price of 1.0 €/kg. The feasibility analysis indicated that the H2-related costs were the major contributor to the capital and operation costs due to high expenses associated with the in-situ H2 storage facility and the purchasing of H2, respectively. Compared to conventional upgrading methods, biological biogas upgrading has a higher capital and production cost, which can be reduced by increasing the plant capacity. The sensitivity analysis showed that the profitability is very sensitive to biomethane prices, capital investment, and the H2 price.

show abstract

“…For full-scale application, there is a need for more accessible and economically feasible nutrient sources, such as manure, digestate or reject water from sludge processing in wastewater treatment plants (WWTP). The use of such undefined nutrient media has mainly been evaluated for biomethanation of H 2 /CO 2 , during operation in batch or continuous mode (Kougias and Angelidaki 2018;Sieborg et al 2020;Tsapekos et al 2021), and for biomethanation of syngas in a TBR in batch mode (Aryal et al 2021). To our knowledge, only one previous study has used a non-defined nutrient source during continuous operation of a TBR for syngas methanation (Figueras et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…The biological processes involved in syngas conversion have been investigated in many studies and have been shown to be influenced by different parameters, such as type of reactor and carrier, composition of the gas, environmental Hydrogenotrophic methanogens converting H 2 /CO 2 to methane (CH 4 ) also compete with chemolithotrophic acetogenic bacteria that consume H 2 /CO 2 to produce acetate. Acetate is consumed by either acetoclastic methanogens for CH 4 production or syntrophic acetate oxidising bacteria to produce H 2 /CO 2 parameters such as temperature, and liquid recirculating rates and nutrient composition (for reviews, see Grimalt-Alemany et al 2017;Aryal et al 2021;Li et al 2021;Sposob et al 2021;Tsapekos et al 2021). Other determinants of process efficiency, such as microbial community structure and abundance as influenced by operating parameters, have been less thoroughly investigated and the links between operational settings and performance and the microbial community are not fully understood.…”

Section: Introductionmentioning

confidence: 99%

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

Pilot-scale biomethanation in a trickle bed reactor: Process performance and microbiome functional reconstruction

Cited by 51 publications

References 46 publications

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Techno-Economic Assessment of Biological Biogas Upgrading Based on Danish Biogas Plants

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

Contact Info

Product

Resources

About