Exergy-Based Performance Assessment of Biogas Plants: Application of Advanced Exergy and Exergoeconomic Analyses for Evaluating Biogas Upgrading Process

2018 ◽  
pp. 355-386 ◽  
Author(s):  
Hojat Ansarinasab ◽  
Mehdi Mehrpooya
Keyword(s):  
Performance Assessment ◽  
Biogas Upgrading ◽  
Biogas Plants

scholarly journals Empirical Validation of a Biogas Plant Simulation Model and Analysis of Biogas Upgrading Potentials

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2424
Author(s):  
Jan Martin Zepter ◽  
Jan Engelhardt ◽  
Tatiana Gabderakhmanova ◽  
Mattia Marinelli
Keyword(s):  
Simulation Model ◽  
Biogas Production ◽  
Biogas Plant ◽  
Raw Material ◽  
Biogas Upgrading ◽  
Integrated Energy Systems ◽  
First Order Kinetics ◽  
Biogas Plants ◽  
Plant Simulation ◽  
Kinetics Of

Biogas plants may support the transformation towards renewable-based and integrated energy systems by providing dispatchable co-generation as well as opportunities for biogas upgrading or power-to-X conversion. In this paper, a simulation model that comprises the main dynamics of the internal processes of a biogas plant is developed. Based on first-order kinetics of the anaerobic digestion process, the biogas production of an input feeding schedule of raw material can be estimated. The output of the plant in terms of electrical and thermal energy is validated against empirical data from a 3-MW biogas plant on the Danish island of Bornholm. The results show that the model provides an accurate representation of the processes within a biogas plant. The paper further provides insights on the functioning of the biogas plant on Bornholm as well as discusses upgrading potentials of biogas to biomethane at the plant from an energy perspective.

Process Related Methane Loss from Commercially Operating Biogas-Upgrading Plants

2018 ◽  
Author(s):  
Torben Kvist ◽  
Nabin Aryal
Keyword(s):  
Detrimental Effect ◽  
Economic Consequences ◽  
Ch4 Emission ◽  
Biogas Upgrading ◽  
Waste Gas ◽  
Biogas Plants ◽  
Agriculture Residue ◽  
Investigation Process ◽  
Biogas Technology ◽  
Water Scrubber

Biogas technology is one of the widely applied anaerobic digestion approaches to harvest methane from different wastes such as wastewater treatment sludge, agriculture residue, and other biomasses. Biogas can be further purified utilizing biogas upgrading technology so it can be applied as biomethane in vehicles and for gas grid injection. Recently, methane loss from biogas plants and its environmental and economic consequences have been underlined, but not thoroughly researched. In this investigation, process related CH4 loss from nine different commercially operating biogas upgrading plants such aswater scrubber, amine, and membrane-based plants was examined. The result of the measurements showed an average of 0.7% methane loss with respect to supplied methane to the upgrading plants. A methane loss up to 1.7% has been detected in water scrubber methane upgrading technology, while 0.037 % methane loss was detected in amine based upgrading, thus the water scrubber has shown the most detrimental effect as regards methane loss. Finally, the regenerative thermal oxidizer was further applied to reduce CH4 emission by 99.5 % of the amount of CH4 in the waste gas from the upgrading unit.

scholarly journals What Could China Give to and Take from Other Countries in Terms of the Development of the Biogas Industry?

2020 ◽  
Vol 12 (4) ◽  
pp. 1490 ◽  
Author(s):  
Lei Zheng ◽  
Jingang Chen ◽  
Mingyue Zhao ◽  
Shikun Cheng ◽  
Li-Pang Wang ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Standard System ◽  
Government Subsidy ◽  
Organic Residues ◽  
Biogas Upgrading ◽  
Planning And Management ◽  
Biogas Plants ◽  
European Counterpart

Anaerobic digestion is one of the most sustainable and promising technologies for the management of organic residues. China plays an important role in the world’s biogas industry and has accumulated rich and valuable experience, both positive and negative. The country has established relatively complete laws, policies and a subsidy system; its world-renowned standard system guarantees the implementation of biogas projects. Its prefabricated biogas industry has been developed, and several biogas-linked agricultural models have been disseminated. Nonetheless, the subsidy system in China’s biogas industry is inflexible and cannot lead to marketization, unlike that of its European counterpart. Moreover, the equipment and technology levels of China’s biogas industry are still lagging and underdeveloped. Mono-digestion, rather than co-digestion, dominates the biogas industry. In addition, biogas upgrading technology is immature, and digestate lacks planning and management. China’s government subsidy is reconsidered in this work, resulting in the recommendation that subsidy should be based on products (i.e., output-oriented) instead of only input subsidy for construction. The policy could focus on the revival of abandoned biogas plants as well.

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

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8252
Author(s):  
Néméhie Lawson ◽  
Merlin Alvarado-Morales ◽  
Panagiotis Tsapekos ◽  
Irini Angelidaki
Keyword(s):  
Capital Investment ◽  
Production Cost ◽  
Economic Assessment ◽  
Selling Price ◽  
Biogas Upgrading ◽  
Biogas Plants ◽  
Biomethane Production ◽  
Plant Processing ◽  
Plant Capacity

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.

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