Valorizing spent mushroom substrate into syngas by the thermo-chemical process

Taewoo LEE, Dongho CHOI, Jonghyun PARK, Yiu Fai TSANG, Kun Yi Andrew LIN, Sungyup JUNG, Eilhann E. KWON

Research output: Contribution to journalArticlespeer-review

4 Citations (Scopus)

Abstract

This study investigated the conversion of agricultural biomass waste (specifically, spent mushroom substrate) into syngas via pyrolysis. Carbon dioxide was used to provide a green/sustainable feature in the pyrolysis process. All the experimental data highlight the mechanistic role of carbon dioxide (CO₂) in the process, demonstrated by the enhanced carbon monoxide (CO) yield from pyrolysis under CO. Carbon dioxide was indeed reactive at ≥ 500 ℃. Carbon dioxide was reduced and subsequently oxidized volatiles stemming from the thermolysis of spent mushroom substrate via the gas-phase reaction, thereby resulting in the enhanced formation of CO. Carbon dioxide radically diverted the carbon distribution patterns of the pyrogenic products, as more carbon in the oil was allocated to syngas by the gas-phase reaction of volatiles and CO. To enhance the mechanistic role of CO, a Ni-based catalyst was added to the pyrolysis process, which greatly accelerated the gas-phase reaction of volatiles and CO. Copyright © 2023 Elsevier Ltd. All rights reserved.

Original languageEnglish
Article number130007
JournalBioresource Technology
Volume391
Early online dateNov 2023
DOIs
Publication statusPublished - Jan 2024

Citation

Lee, T., Choi, D., Park, J., Tsang, Y. F., Lin, K.-Y. A., Jung, S., Kwon, E. E. (2023). Valorizing spent mushroom substrate into syngas by the thermo-chemical process. Bioresource Technology, 391, Article 130007. https://doi.org/10.1016/j.biortech.2023.130007

Keywords

  • Circular economy
  • Waste-to-energy
  • Biomass valorization
  • Pyrolysis
  • CO₂ utilization

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