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Liu Y, Wu J, Wu R, Li J, Zhang Q, Sheng G. Nitrogen-doped activated carbon-based steel slag composite material as an accelerant for enhancing the resilience of flexible biogas production process against shock loads: Performance, mechanism and modified ADM1 modeling. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121874. [PMID: 39025014 DOI: 10.1016/j.jenvman.2024.121874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/25/2024] [Accepted: 07/12/2024] [Indexed: 07/20/2024]
Abstract
Anaerobic digestion for flexible biogas production can lead to digestion inhibition under high shock loads. While steel slag addition has shown promise in enhancing system buffering, its limitations necessitate innovation. This study synthesized the nitrogen-doped activated carbon composite from steel slag to mitigate intermediate product accumulation during flexible biogas production. Material characterization preceded experiments introducing the composite into anaerobic digestion systems, evaluating its impact on methane production efficiency under hydraulic and concentration sudden shocks. Mechanistic insights were derived from microbial community and metagenomic analyses, facilitating the construction of the modified Anaerobic Digestion Model No. 1 (ADM1) to quantitatively assess the material's effects. Results indicate superior resistance to concentration shocks with substantial increment of methane production rate up to 33.45% compared with control group, which is mediated by direct interspecies electron transfer, though diminishing with increasing shock intensity. This study contributes theoretical foundations for stable flexible biogas production and offers an effective predictive tool for conductor material reinforcement processes.
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Affiliation(s)
- Yiyun Liu
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China; Engineering Research Center of Biofilm Water Purification and Utilization Technology Ministry of Education, Maanshan, 243002, 243002, China
| | - Jun Wu
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China
| | - Rongqi Wu
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China
| | - Jianjun Li
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China
| | - Qin Zhang
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China; Engineering Research Center of Biofilm Water Purification and Utilization Technology Ministry of Education, Maanshan, 243002, 243002, China
| | - Guanghong Sheng
- School of Energy and Environment, Anhui University of Technology, Maanshan, 243002, 243002, China; Engineering Research Center of Biofilm Water Purification and Utilization Technology Ministry of Education, Maanshan, 243002, 243002, China.
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Liu Y, Huang J, Wang W, Sheng G, Wang S, Wu J, Li J. Evaluating the sustainability of demand oriented biogas supply programs under different flexible hierarchies: A suggested approach based on the triple bottom line principle. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165047. [PMID: 37355136 DOI: 10.1016/j.scitotenv.2023.165047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/14/2023] [Accepted: 06/19/2023] [Indexed: 06/26/2023]
Abstract
In this paper, a decision-making approach based on the triple bottom line concept is presented for evaluating the sustainability of demand-oriented biogas supply (DOBS) programs with regard to their environmental, economic, and social impacts. For the assessment, an indicator system was developed, whose main parameters were quantified by integrating emergy analysis, economic benefit assessment, and a proposed social risk accounting method. The Charnes-Cooper-Wei-Huang (CCWH) model with constrained cone was adopted to calculate the comprehensive sustainability via the synthesis of the economic, environmental, and social indicators, in which eight scenarios were set according to the flexibility hierarchy of biogas supplied for load demand, biogas production mode, and feeding substrates. The evaluation results show that the DOBS scenario of supplying for real-time varying power demand by using straw and livestock manure has the highest sustainability score in our case study. Based on the results, corresponding managerial implications are proposed.
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Affiliation(s)
- Yiyun Liu
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China.
| | - Jingjing Huang
- University of Stuttgart, Institute for Sanitary Engineering, Water Quality and Solid Waste Management, Bandtäle 2, 70569 Stuttgart, Germany
| | - Wei Wang
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
| | - Guanghong Sheng
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
| | - Shisheng Wang
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
| | - Jun Wu
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
| | - Jianjun Li
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
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Shinde R, Hackula A, O'Shea R, Barth S, Murphy JD, Wall DM. Demand-driven biogas production from Upflow Anaerobic Sludge Blanket (UASB) reactors to balance the power grid. BIORESOURCE TECHNOLOGY 2023:129364. [PMID: 37336452 DOI: 10.1016/j.biortech.2023.129364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
Future energy systems necessitate dispatchable renewable energy to balance electrical grids with high shares of intermittent renewables. Biogas from anaerobic digestion (AD) can generate electricity on-demand. High-rate methanogenic reactors, such as the Upflow Anaerobic Sludge Blanket (UASB), can react quicker to variations in feeding as compared to traditional AD systems. In this study, experimental trials validated the feasibility of operating the UASB in a demand-driven manner. The UASB was operated with leachate produced from a hydrolysis reactor treating grass silage. The UASB demonstrated a high degree of flexibility in responding to variable feeding regimes. The intra-day biogas production rate could be increased by up to 123% under 4 hours in demand-driven operation, without significant deterioration in performance. A model based on kinetic analysis was developed to help align demand-driven operation with the grid. The findings suggest significant opportunities for UASBs to provide positive and negative balance to the electricity grid.
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Affiliation(s)
- Rajas Shinde
- SFI MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, College Road, Cork, T23 XE10, Ireland; Civil, Structural and Environmental Engineering, School of Engineering and Architecture, University College Cork, College Road, Cork, T12 K8AF, Ireland; Crops, Environment and Land Use Program, Crop Science Department, Teagasc, Oak Park, Carlow, R93XE12 Co. Carlow, Ireland
| | - Anga Hackula
- SFI MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, College Road, Cork, T23 XE10, Ireland; Civil, Structural and Environmental Engineering, School of Engineering and Architecture, University College Cork, College Road, Cork, T12 K8AF, Ireland
| | - Richard O'Shea
- SFI MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, College Road, Cork, T23 XE10, Ireland; Civil, Structural and Environmental Engineering, School of Engineering and Architecture, University College Cork, College Road, Cork, T12 K8AF, Ireland
| | - Susanne Barth
- Crops, Environment and Land Use Program, Crop Science Department, Teagasc, Oak Park, Carlow, R93XE12 Co. Carlow, Ireland
| | - Jerry D Murphy
- SFI MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, College Road, Cork, T23 XE10, Ireland; Civil, Structural and Environmental Engineering, School of Engineering and Architecture, University College Cork, College Road, Cork, T12 K8AF, Ireland
| | - David M Wall
- SFI MaREI Centre for Energy, Climate and Marine, Environmental Research Institute, University College Cork, College Road, Cork, T23 XE10, Ireland; Civil, Structural and Environmental Engineering, School of Engineering and Architecture, University College Cork, College Road, Cork, T12 K8AF, Ireland.
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Körber M, Weinrich S, Span R, Gerber M. Demand-oriented biogas production to cover residual load of an electricity self-sufficient community using a simple kinetic model. BIORESOURCE TECHNOLOGY 2022; 361:127664. [PMID: 35872271 DOI: 10.1016/j.biortech.2022.127664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/15/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
Flexible biogas production can enable demand-oriented energy supply without the need for expensive gas storage expansions, but poses challenges to the stability of the anaerobic digestion (AD) process. In this work, biogas production of laboratory-scale AD of maize silage and sugar beets was optimized to cover the residual load of an electricity self-sufficient community using a simple process model based on first-order kinetics. Experiments show a good agreement between biogas demand, predicted, and measured biogas production. By optimizing biogas conversion schedules based on the measured gas production, a gas storage capacity of 7-8 h was identified for maximum flexibility, which corresponds to typical gas storage sizes at industrial biogas plants in Germany. Various stability indicators were continuously monitored and proved resilient process conditions. These results demonstrate that demand-oriented biogas production using model predictive control is a promising approach to enable existing biogas plants to provide balancing energy.
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Affiliation(s)
- Matthias Körber
- Thermodynamics, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| | - Sören Weinrich
- Biochemical Conversion Department, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany
| | - Roland Span
- Thermodynamics, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Mandy Gerber
- Mechatronics and Mechanical Engineering, Bochum University of Applied Sciences, Am Hochschulcampus 1, 44801 Bochum, Germany
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Mechanism of Electron Acceptor Promoting Propionic Acid Transformation in Anaerobic Fermentation. ENERGIES 2022. [DOI: 10.3390/en15113947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To improve the conversion efficiency of propionic acid in the post-anaerobic fermentation of biogas slurry, the anaerobic fermentation process using biogas slurry with a high acid content was simulated in an anaerobic reactor at 35 ± 0.5 °C using sodium propionate as the sole substrate. The effects of different electron acceptors (NO3−, SO42− and Fe3+) on propionic acid conversion and the succession of microbial community structures were investigated. The results showed that the experimental group with the electron acceptor NO3− exhibited the best anaerobic fermentation effect, with a maximum propionate removal rate of 94%, which was 36% higher than the control group without an electron acceptor. The maximum methane production rate was 307.6 mL/g COD, an increase of 30% compared with the control group. Thauera, Aquabacterium, Desulfomicrobium, Clostridium_sensu_stricto_1, and other functional microorganisms were all enriched. The dominant functional genes related to redox reactions, such as K03711, K00384, and K03406, were highly enriched in the reactor when Fe3+ and NO3− were added. The study shows that adding an electron acceptor can enhance interactions between microorganisms, achieve efficient propionate conversion, and improve methane production in the system.
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Rupnik M, Kovács KL, Nagaraja TG, Allen-Vercoe E. Anaerobes in the microbiome. Anaerobe 2021; 68:102362. [PMID: 33975719 DOI: 10.1016/j.anaerobe.2021.102362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Maja Rupnik
- National Laboratory for Health, Environment and Food, NLZOH, Maribor, Slovenia; Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Kornél L Kovács
- Department of Biotechnology and Department of Oral Biology and Experimental Dentistry, University of Szeged, Szeged, Hungary
| | - T G Nagaraja
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Emma Allen-Vercoe
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
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