Household food waste conversion to biohydrogen via steam gasification over copper and nickel-loaded SBA-15 catalysts

Surendar Moogi, Su Shiung Lam, Wei Hsin Chen, Chang Hyun Ko, Sang Chul Jung, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Household food waste (FW) was converted into biohydrogen-rich gas via steam gasification over Ni and bimetallic Ni (Cu-Ni and Co-Ni) catalysts supported on mesoporous SBA-15. The effect of catalyst method on steam gasification efficiency of each catalyst was investigated using incipient wetness impregnation, deposition precipitation, and ethylenediaminetetraacetic acid metal complex impregnation methods. H2-TPR confirmed the synergistic interaction of the dopants (Co and Cu) and Ni. Furthermore, XRD and HR-TEM revealed that the size of the Ni particle varied depending on the method of catalyst synthesis, confirming the formation of solid solutions in Co– or Cu-doped Ni/SBA-15 catalysts due to dopant insertion into the Ni. Notably, the exceptional activity of the Cu-Ni/SBA-15-EMC catalyst in FW steam gasification was attributed to the fine distribution of the concise Ni nanoparticles (9 nm), which resulted in the highest hydrogen selectivity (62 vol%), gas yield (73.6 wt%). Likewise, Cu-Ni solid solution decreased coke to 0.08 wt%.

Original languageEnglish
Article number128209
JournalBioresource Technology
Volume366
DOIs
StatePublished - Dec 2022

Keywords

  • Bio-hydrogen
  • Cu-Ni/SBA-15
  • EDTA metal complex impregnation
  • Household food waste
  • Steam gasification

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