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Hydrogen production from acid- and ammonia-pretreated biomass

Hydrogen production from biomass has potential environmental and economic advantages; however, the factors that lead to low hydrogen production should be investigated. Acid and base pretreatments were applied to investigate the catalytic effects of alkali and alkaline earth metals (AAEMs) on the bio...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2022-10, Vol.36 (10), p.5243-5251
Main Authors: Ku, Min Jong, Lee, Dae Gyun, Kim, Min Woo, Jeong, Tae Yong, Kim, Seung Mo, Jeon, Chung Hwan
Format: Article
Language:English
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Summary:Hydrogen production from biomass has potential environmental and economic advantages; however, the factors that lead to low hydrogen production should be investigated. Acid and base pretreatments were applied to investigate the catalytic effects of alkali and alkaline earth metals (AAEMs) on the biomass (wood pellets) samples and hydrogen production through pyrolysis. The pyrolysis behavior and gas yield were analyzed using a thermogravimetric analyzer and drop tube furnace, respectively. The chemical structure characteristics were analyzed using Brunauer-Emmett-Teller specific surface area analyzer, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Chemically pretreated samples yielded considerably higher hydrogen than the raw sample, as confirmed based on the microstructural properties of the biochar samples. Therefore, the physical changes produced a greater effect than the chemical changes caused by the removal of AAEMs.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-022-0937-5