Life-cycle assessment of hydrogen production via catalytic gasification of wheat straw in the presence of straw derived biochar catalyst

Adrian Chun Minh Loy, Hatem Alhazmi, Serene Sow Mun Lock, Chung Loong Yiin, Kin Wai Cheah, Bridgid Lai Fui Chin, Bing Shen How, Suzana Yusup

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Abstract

The environmental footprints of H2production via catalytic gasification of wheat straw using straw-derived biochar catalysts were examined. The functional unit of 1 kg of H2was adopted in the system boundaries, which includes 5 processes namely biomass collection and pre-treatment units (P1), biochar catalyst preparation using fast pyrolysis unit (P2), two-stage pyrolysis-gasification unit (P3), products separation unit (P4), and H2distribution to downstream plants (P5). Based on the life-cycle assessment, the hot spots in this process were identified, the sequence was as follows: P4 > P2 > P1 > P3 > P5. The end-point impacts score for the process was found to be 93.4017 mPt. From benchmarking analysis, the proposed straw-derived biochar catalyst was capable of offering almost similar catalytic performance with other metal-based catalysts with a lower environmental impact.

Original languageEnglish
Article number125796
JournalBioresource Technology
Volume341
Early online date21 Aug 2021
DOIs
Publication statusPublished - 1 Dec 2021
Externally publishedYes

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Publisher Copyright:
© 2021 Elsevier Ltd
© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

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