Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion
Biogas is a renewable source of energy that when upgraded can be adopted as a reliable and sustainable alternative. This study evaluates the performance of thermal swing adsorption technology applying resistive heating, in upgrading biogas obtained from anaerobic digestion to biomethane. Commercial...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-12-01
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| Series: | Energy Storage and Saving |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772683524000402 |
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| author | Jackline Mwende Mutunga Hiram Ndiritu Meshack Hawi Peter Oketch |
| author_facet | Jackline Mwende Mutunga Hiram Ndiritu Meshack Hawi Peter Oketch |
| author_sort | Jackline Mwende Mutunga |
| collection | DOAJ |
| description | Biogas is a renewable source of energy that when upgraded can be adopted as a reliable and sustainable alternative. This study evaluates the performance of thermal swing adsorption technology applying resistive heating, in upgrading biogas obtained from anaerobic digestion to biomethane. Commercial coconut shell-based activated carbon was used as an adsorbent in the four-step cycle process to capture carbon dioxide, using a fabricated adsorption model. The influence of minor gas constituents of biogas in carbon dioxide breakthrough curves was analyzed. Dynamic adsorption tests were carried out to evaluate the system performance in carbon dioxide capture. The maximum regeneration temperature of 60 °C was found to have peak carbon dioxide concentration of 39% in the waste gas, maximum energy requirements of 0.1538 kWh per cycle, and an energy efficiency of 87%. This is a good trade-off between adsorbent recovery and system energy efficiency. The adoption of thermal swing adsorption technology in biogas upgrading systems is a viable alternative for water-deficient regions. |
| format | Article |
| id | doaj-art-0b0a8258749b435585990bbf1a2ef43b |
| institution | DOAJ |
| issn | 2772-6835 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy Storage and Saving |
| spelling | doaj-art-0b0a8258749b435585990bbf1a2ef43b2025-08-20T02:40:10ZengKeAi Communications Co., Ltd.Energy Storage and Saving2772-68352024-12-013427828710.1016/j.enss.2024.10.001Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestionJackline Mwende Mutunga0Hiram Ndiritu1Meshack Hawi2Peter Oketch3Department of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, 62000-00200, Kenya; Department of Mechanical Engineering, Kenyatta University, Nairobi, 43844-00100, Kenya; Corresponding author.Department of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, 62000-00200, KenyaDepartment of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, 62000-00200, KenyaDepartment of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, 62000-00200, KenyaBiogas is a renewable source of energy that when upgraded can be adopted as a reliable and sustainable alternative. This study evaluates the performance of thermal swing adsorption technology applying resistive heating, in upgrading biogas obtained from anaerobic digestion to biomethane. Commercial coconut shell-based activated carbon was used as an adsorbent in the four-step cycle process to capture carbon dioxide, using a fabricated adsorption model. The influence of minor gas constituents of biogas in carbon dioxide breakthrough curves was analyzed. Dynamic adsorption tests were carried out to evaluate the system performance in carbon dioxide capture. The maximum regeneration temperature of 60 °C was found to have peak carbon dioxide concentration of 39% in the waste gas, maximum energy requirements of 0.1538 kWh per cycle, and an energy efficiency of 87%. This is a good trade-off between adsorbent recovery and system energy efficiency. The adoption of thermal swing adsorption technology in biogas upgrading systems is a viable alternative for water-deficient regions.http://www.sciencedirect.com/science/article/pii/S2772683524000402Anaerobic digestionBiogas upgradingExperimental studyThermal swing adsorptionEnergy efficiency |
| spellingShingle | Jackline Mwende Mutunga Hiram Ndiritu Meshack Hawi Peter Oketch Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion Energy Storage and Saving Anaerobic digestion Biogas upgrading Experimental study Thermal swing adsorption Energy efficiency |
| title | Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| title_full | Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| title_fullStr | Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| title_full_unstemmed | Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| title_short | Experimental study of four-step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| title_sort | experimental study of four step thermal swing adsorption cycle to upgrade biogas obtained from anaerobic digestion |
| topic | Anaerobic digestion Biogas upgrading Experimental study Thermal swing adsorption Energy efficiency |
| url | http://www.sciencedirect.com/science/article/pii/S2772683524000402 |
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