Integrated production of methanol and biochar from bagasse and plastic waste: A three-in-one solution for carbon sequestration, bioenergy production, and waste valorization

Su, Guangcan and Jiang, Peng and Zhou, Hewen and Zulkifli, Nurin Wahidah Mohd and Ong, Hwai Chyuan and Ibrahim, Shaliza (2024) Integrated production of methanol and biochar from bagasse and plastic waste: A three-in-one solution for carbon sequestration, bioenergy production, and waste valorization. Energy Conversion and Management, 307. p. 118344. ISSN 0196-8904, DOI https://doi.org/10.1016/j.enconman.2024.118344.

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Official URL: https://doi.org/10.1016/j.enconman.2024.118344

Abstract

The shift from fossil fuels to renewable energy is a crucial strategy to achieve carbon neutrality. However, the methanol industry relies heavily on fossil fuels. Alternative feedstocks, such as biomass and plastics, still face many challenges. Biomass is hydrogen-deficient and cannot achieve a high methanol yield, while plastic gasification consumes too much energy. Accordingly, this research proposed a new method to synergistically coproduce methanol and biochar from bagasse pyrolysis and plastic waste gasification. This innovative approach was assessed using techno-economic analysis and hybrid life-cycle assessment based on sugarcane bagasse resources in Guangxi province as a case study and compared with the other four scenarios. The results indicated that the novel method exhibits huger economic and environmental benefits with a low payback period of 6.32 years and a low global warming potential of -1875.41 kg CO2-eq/t. However, the high total capital cost is the primary potential obstacle to widespread promotion. Spatial-temporal analysis shows that Chongzuo and Laibin have the most tremendous methanol production potential and economic and environmental benefits due to their high bagasse production. This study contributes to biomass utilization and plastic waste management by proposing a synergistic process and offers multiple benefits for carbon sequestration, energy security, and waste valorization.

Item Type: Article
Funders: Universiti Malaya, Malaysia SATU Joint Research Scheme (ST075-2022)
Uncontrolled Keywords: Biomass; Plastic wastes; Methanol; Biochar; Carbon neutrality
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Faculty of Engineering > Department of Mechanical Engineering
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 30 Sep 2024 08:18
Last Modified: 30 Sep 2024 08:18
URI: http://eprints.um.edu.my/id/eprint/45277

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