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Volume 17
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10.3390/su17041445
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Article

Approximate Adsorption Performance Indicator in Evaluating Sustainable Bamboo-Derived Adsorbents for Biogas Upgrading

by
Khaled Abou Alfa
1,*,
Nour Abou Saleh
1,
Adrian Beda
2,3,
Camélia Matei Ghimbeu
2,3,
Grace Iragena Dushime
1,
Frederic Marias
1,
Laurent Moynault
1,
Vincent Platel
1 and
Cecile Hort
1,*
1
Laboratoire de Thermique, Energetique et Procedes-IPRA, EA1932, Université Pau, Pays Adour/E2S UPPA, 64000 Pau, France
2
Institut de Science des Matériaux de Mulhouse (IS2M), CNRS UMR 7361, Université de Haute-Alsace, 68100 Mulhouse, France
3
Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361, Université de Strasbourg, 67081 Strasbourg, France
*
Authors to whom correspondence should be addressed.
Sustainability 2025, 17(4), 1445; https://doi.org/10.3390/su17041445
Submission received: 10 January 2025 / Revised: 31 January 2025 / Accepted: 5 February 2025 / Published: 10 February 2025
(This article belongs to the Section Sustainable Materials)
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Abstract

Purifying biogas by removing contaminants and carbon dioxide (CO2) to produce biomethane enhances its energy content, making it suitable as fuel and for injection into natural gas grids. Bamboo-derived adsorbents Bamboo-500 (pyrolyzed at 500 °C), Bamboo-700 (pyrolyzed at 700 °C), and Bamboo-A-900 (activated with CO2 at 900 °C) were synthesized and characterized to evaluate their performance for CO2 and CH4 adsorption. Increasing pyrolysis temperature from 500 °C to 700 °C and further CO2 activation at 900 °C enhanced adsorption capacities of CO2 and CH4 due to improved surface area and micropore structure. In this study, the novel Approximate Adsorption Performance Indicator (AAPI) approach is introduced, offering an efficient method for evaluating adsorbent performance, particularly in biogas upgrading. AAPI results suggest Bamboo-500 is suitable for biogas upgrading at very low pressures (<0.12 MPa) with low regeneration energy and acceptable CO2 capacity (1.9 ± 0.2 mol kg−1). However, Bamboo-A-900 excelled at medium and high pressures by its highest CO2 adsorption capacity (8.0 ± 0.3 mol kg−1) promoted by the high surface area (1220 m2g−1) and calcium oxide presence. Finally, Bamboo-A-900 shows promise for enhancing CO2 adsorption and biogas upgrading. Bamboo-derived adsorbents offer a sustainable solution for biogas upgrading, supporting Sustainable Development Goals by promoting clean energy transitions.
Keywords: bamboo; biogas; physical adsorption; activated biochar; pyrolysis; Approximate Adsorption Performance Indicator bamboo; biogas; physical adsorption; activated biochar; pyrolysis; Approximate Adsorption Performance Indicator

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MDPI and ACS Style

Abou Alfa, K.; Abou Saleh, N.; Beda, A.; Matei Ghimbeu, C.; Iragena Dushime, G.; Marias, F.; Moynault, L.; Platel, V.; Hort, C. Approximate Adsorption Performance Indicator in Evaluating Sustainable Bamboo-Derived Adsorbents for Biogas Upgrading. Sustainability 2025, 17, 1445. https://doi.org/10.3390/su17041445

AMA Style

Abou Alfa K, Abou Saleh N, Beda A, Matei Ghimbeu C, Iragena Dushime G, Marias F, Moynault L, Platel V, Hort C. Approximate Adsorption Performance Indicator in Evaluating Sustainable Bamboo-Derived Adsorbents for Biogas Upgrading. Sustainability. 2025; 17(4):1445. https://doi.org/10.3390/su17041445

Chicago/Turabian Style

Abou Alfa, Khaled, Nour Abou Saleh, Adrian Beda, Camélia Matei Ghimbeu, Grace Iragena Dushime, Frederic Marias, Laurent Moynault, Vincent Platel, and Cecile Hort. 2025. "Approximate Adsorption Performance Indicator in Evaluating Sustainable Bamboo-Derived Adsorbents for Biogas Upgrading" Sustainability 17, no. 4: 1445. https://doi.org/10.3390/su17041445

APA Style

Abou Alfa, K., Abou Saleh, N., Beda, A., Matei Ghimbeu, C., Iragena Dushime, G., Marias, F., Moynault, L., Platel, V., & Hort, C. (2025). Approximate Adsorption Performance Indicator in Evaluating Sustainable Bamboo-Derived Adsorbents for Biogas Upgrading. Sustainability, 17(4), 1445. https://doi.org/10.3390/su17041445

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