Synergistic benefits for hydrogen production through CO2-cofeeding catalytic pyrolysis of cellulosic biomass waste
- Authors
- Cho, Seong-Heon; Cho, Eun-Bum; Lee, Jun-Hyeok; Moon, Deok Hyun; Jung, Sungyup; Kwon, Eilhann E.
- Issue Date
- May-2021
- Publisher
- SPRINGER
- Keywords
- Seed wastes; CO2-to-fuel; Catalytic pyrolysis; Waste to fuel
- Citation
- CELLULOSE, v.28, no.8, pp.4781 - 4792
- Indexed
- SCIE
SCOPUS
- Journal Title
- CELLULOSE
- Volume
- 28
- Number
- 8
- Start Page
- 4781
- End Page
- 4792
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190181
- DOI
- 10.1007/s10570-021-03810-0
- ISSN
- 0969-0239
- Abstract
- Direct valorization of cellulosic biomass waste into energy is beneficial based on the concept of waste-to-energy. Pyrolysis of the biomass waste opens a chance to upgrade the valueless waste into value-added platform chemicals such as syngas (H-2 and CO). This study focused on valorization of sesame seed waste (SSW), a biomass waste material collected after sesame oil extraction, into syngas. To enhance syngas production and make this process more environmentally benign, CO2 was added as co-reactant during SSW pyrolysis. In the presence of CO2, pyrolysis of SSW showed enhanced CO formation (670 %), comparing with pyrolysis under N-2, due to the gas phase reactions (GPRs) between CO2 and volatile hydrocarbons resulted from pyrolysis of SSW. To enhance syngas production from SSW pyrolysis, mesoporous nickel-based catalyst was used for catalytic pyrolysis due to its known catalytic capability for chemical bond scissions of hydrocarbons and biomass-derived oxygenates. The enhanced production of syngas was proportionate to catalytic bed temperature (500, 600, and 700 degrees C) and catalyst loadings (0.2, 0.5, and 1 g), and the GPRs were independent with H-2 formation. All experimental findings indicated that CO2-assisted catalytic pyrolysis significantly improved H-2 and CO formations from a cellulosic biomass waste material, controlling the CO concentration with an introduction of CO2.
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