CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review
Anaerobic digestion (AD) has been recognized as one of the most viable options for the treatment of a wide range of waste materials. Complex structure of wastes is safely broken down to destroy pollutants and pathogens. Biogas is produced as a by-product of this process which is considered as a clea...
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Elsevier
2025-01-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844025002919 |
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| author | Muhammad Usman Farid Indiana A. Olbert Andreas Bück Abdul Ghafoor Guangxue Wu |
| author_facet | Muhammad Usman Farid Indiana A. Olbert Andreas Bück Abdul Ghafoor Guangxue Wu |
| author_sort | Muhammad Usman Farid |
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| description | Anaerobic digestion (AD) has been recognized as one of the most viable options for the treatment of a wide range of waste materials. Complex structure of wastes is safely broken down to destroy pollutants and pathogens. Biogas is produced as a by-product of this process which is considered as a clean energy resource. However, provision of controlled environment for microbial activities is critical to ensure the required process efficiency. This can only be achieved with the efficient design of controlled vessels used for anaerobic digestion, termed as AD reactors. AD functions such as mixing, hydrodynamics, multiphase interaction, heat transfer, temperature distribution and bio kinetics are significantly affected by the reactor shape, design and configurations, hence making it essential to optimize the reactor design before installation at large scale. Mostly, such optimization is carried out with the help of lab scale experimentations and testing protocols which result in high costs for repeating several design experiments. Computational fluid dynamics (CFD) is an applied mathematical tool which helps to understand and predict the fluid dynamics, heat flow as well as species transport in different domains. This approach contributes to minimize the experimental costs while optimizing the reactor configurations in less time. The current review is presented to summarize and discuss the core characteristics of AD process followed by concerned CFD attributes. Research gaps and critical challenges are identified in different aspects such as reactor design, and configuration, mixing, multiphase flow, heat transfer, biokinetics as well as machine learning approaches. |
| format | Article |
| id | doaj-art-bf5e570e7e204697a5ba21fc466254c9 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-bf5e570e7e204697a5ba21fc466254c92025-02-02T05:28:32ZengElsevierHeliyon2405-84402025-01-01112e41911CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive reviewMuhammad Usman Farid0Indiana A. Olbert1Andreas Bück2Abdul Ghafoor3Guangxue Wu4Institute of Particle Technology (LFG), Department of Chemical and Biological Engineering, Friedrich-Alexander University Erlangen-Nuremberg Cauerstr, 4, D-91058, Erlangen, Germany; Civil Engineering, School of Engineering, University of Galway, Galway, H91HX31, Ireland; Corresponding author. Institute of Particle Technology (LFG), Department of Chemical and Biological Engineering, Friedrich-Alexander University Erlangen-Nuremberg Cauerstr, 4, D-91058, Erlangen, Germany.Civil Engineering, School of Engineering, University of Galway, Galway, H91HX31, IrelandInstitute of Particle Technology (LFG), Department of Chemical and Biological Engineering, Friedrich-Alexander University Erlangen-Nuremberg Cauerstr, 4, D-91058, Erlangen, GermanyDepartment of Farm Machinery and Power, University of Agriculture, Faisalabad, 38000, Faisalabad, PakistanCivil Engineering, School of Engineering, University of Galway, Galway, H91HX31, IrelandAnaerobic digestion (AD) has been recognized as one of the most viable options for the treatment of a wide range of waste materials. Complex structure of wastes is safely broken down to destroy pollutants and pathogens. Biogas is produced as a by-product of this process which is considered as a clean energy resource. However, provision of controlled environment for microbial activities is critical to ensure the required process efficiency. This can only be achieved with the efficient design of controlled vessels used for anaerobic digestion, termed as AD reactors. AD functions such as mixing, hydrodynamics, multiphase interaction, heat transfer, temperature distribution and bio kinetics are significantly affected by the reactor shape, design and configurations, hence making it essential to optimize the reactor design before installation at large scale. Mostly, such optimization is carried out with the help of lab scale experimentations and testing protocols which result in high costs for repeating several design experiments. Computational fluid dynamics (CFD) is an applied mathematical tool which helps to understand and predict the fluid dynamics, heat flow as well as species transport in different domains. This approach contributes to minimize the experimental costs while optimizing the reactor configurations in less time. The current review is presented to summarize and discuss the core characteristics of AD process followed by concerned CFD attributes. Research gaps and critical challenges are identified in different aspects such as reactor design, and configuration, mixing, multiphase flow, heat transfer, biokinetics as well as machine learning approaches.http://www.sciencedirect.com/science/article/pii/S2405844025002919Anaerobic digestionReactor designCFDHydrodynamicsMultiphase |
| spellingShingle | Muhammad Usman Farid Indiana A. Olbert Andreas Bück Abdul Ghafoor Guangxue Wu CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review Heliyon Anaerobic digestion Reactor design CFD Hydrodynamics Multiphase |
| title | CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review |
| title_full | CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review |
| title_fullStr | CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review |
| title_full_unstemmed | CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review |
| title_short | CFD modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes: A comprehensive review |
| title_sort | cfd modelling and simulation of anaerobic digestion reactors for energy generation from organic wastes a comprehensive review |
| topic | Anaerobic digestion Reactor design CFD Hydrodynamics Multiphase |
| url | http://www.sciencedirect.com/science/article/pii/S2405844025002919 |
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