Journal ArticleDOI
Current status of biogas upgrading for direct biomethane use: A review
Muhammad Usman Khan,Muhammad Usman Khan,Jonathan T.E. Lee,Jonathan T.E. Lee,Muhammad Aamir Bashir,Pavani Dulanja Dissanayake,Yong Sik Ok,Yen Wah Tong,Mohammad Ali Shariati,Sarah Wu,Birgitte Kiær Ahring +10 more
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TLDR
A comprehensive overview of the limitations with the existing upgrading technologies along with recent advances in physical, chemical, and biological biogas upgrading technologies (e.g., pressure swing adsorption, membrane separation, biochar adaption and CO2 conversion by biological organisms) and further into possible future solutions, such as hybrid systems are discussed as discussed by the authors.Abstract:
Anaerobic digestion produces biogas, a mixture of CH4 and CO2, where CH4 is a low cost, environmentally friendly, and renewable energy source. The application of biogas production is increasing rapidly as a means of reducing the pollution impact of organic biomasses. However, biogas contains unwanted elements such as hydrogen sulfide, carbon monoxide, siloxanes, and carbon dioxide. To remove these elements, several biogas upgrading technologies like water scrubbing, amine scrubbing, pressure swing adsorption, and membrane separation have been developed and are being used at various commercial scales. Problems with these methods are high energy consumption, the use of expensive chemicals, and high operating cost. Therefore, a major effort is currently underway to improve the design of existing methods as well as developing innovative new upgrading technologies such as cryogenic separation and biological upgrading. This review intends to provide a comprehensive overview of the limitations with the existing upgrading technologies along with recent advances in physical, chemical, and biological biogas upgrading technologies (e.g., pressure swing adsorption, membrane separation, biochar adsorption and CO2 conversion by biological organisms) and further into possible future solutions, such as hybrid systems. Comparative studies of process complexities and associated economic concerns are also provided, and future perspectives that may facilitate research into sustainable biogas upgrading technologies are discussed, focusing in particular on cryogenic separation, novel biological techniques, biochar based upgrading and hybrid technologies incorporating two or more different methods seamlessly integrated.read more
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CO2 capture from biogas by biomass-based adsorbents: A review
TL;DR: In this paper , a review of the recent advances in biogas upgrading by biomass-based adsorbents is presented, including an overview of the production process through activation, and characteristics of adsorbent.
Journal ArticleDOI
Integration of biogas systems into a carbon zero and hydrogen economy: a review
TL;DR: In this article , the role of the biogas sector in capturing methane and mitigating carbon emissions associated with the outputs of anaerobic digestion has been discussed, with the goal of reducing global greenhouse gas emissions by 3.29-4.36 gigatonnes carbon dioxide equivalent.
Journal ArticleDOI
Biomethane Community: A Research Agenda towards Sustainability
TL;DR: In this article , the authors focused on biomethane and proposed a framework based on several criteria that are evaluated using a hybrid analytic hierarchy process (AHP) and 10-point scale methodology.
Journal ArticleDOI
Biochar and hydrochar in the context of anaerobic digestion for a circular approach: An overview.
Matheus Cavali,Nelson Libardi Junior,Rodrigo de Almeida Mohedano,Paulo Belli Filho,Rejane Helena Ribeiro da Costa,Armando Borges de Castilhos Junior +5 more
TL;DR: In this paper , the integration of biochar and hydrochar production from digestate, their utilization as additives and effects on anaerobic digestion, and their potential to adsorb biogas contaminants is discussed.
Journal ArticleDOI
Biological biogas purification: Recent developments, challenges and future prospects
TL;DR: In this article, a review describes biological technologies for both upstream and downstream processing in terms of pollutant removal mechanisms and efficiency, bioreactor configurations and different operating conditions, Limitations of the biological approaches and their future scope are also highlighted.
References
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TL;DR: In this paper, an analysis of the literature data for binary gas mixtures from the list of He, H2, O2, N2, CH4, and CO2 reveals an upper bound relationship for these mixtures.
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Biogas production: current state and perspectives
TL;DR: The current state and perspectives of biogas production, including the biochemical parameters and feedstocks which influence the efficiency and reliability of the microbial conversion and gas yield are reviewed.
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An overview of current status of carbon dioxide capture and storage technologies
TL;DR: In this paper, various aspects of CCS are reviewed and discussed including the state of the art technologies for CO2 capture, separation, transport, storage, leakage, monitoring, and life cycle analysis.
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The IWA Anaerobic Digestion Model No 1 (ADM1)
Damien J. Batstone,Jurg Keller,Irini Angelidaki,Sergey Kalyuzhnyi,Spyros G. Pavlostathis,A. Rozzi,W.T.M. Sanders,H. Siegrist,V.A. Vavilin +8 more
TL;DR: The structured model includes multiple steps describing biochemical as well as physicochemical processes and the physico-chemical equations describe ion association and dissociation, and gas-liquid transfer.
Journal ArticleDOI
The future of anaerobic digestion and biogas utilization
TL;DR: Intensive animal production areas need suitable manure management, aiming to export and to redistribute the excess of nutrients from manure and to optimize their recycling, to avoid over-fertilization.