Household food waste conversion to biohydrogen via steam gasification over copper and nickel-loaded SBA-15 catalysts. (December 2022)

• Record Type: Journal Article
• Authors: Moogi, Surendar; Lam, Su Shiung; Chen, Wei-Hsin; Ko, Chang Hyun; Jung, Sang-Chul; Park, Young-Kwon
• Is Part Of: Bioresource technology. Volume 366(2022)
• Publication Date: 2022-12
• Subjects: Household food waste -- Steam gasification -- Bio-hydrogen -- Cu-Ni/SBA-15 -- EDTA metal complex impregnation; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2022.128209
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Household food waste was exploited for biohydrogen generation. EDTA complex impregnation method generated small Ni (9 nm) particles. Adding dopants (Co or Cu) to Ni/SBA-15 favors the formation of solid solutions. Cu-Ni/SBA-15-EMC catalyst showed the maximum H2 selectivity (62.0 vol%). Cu-Ni solid solution reduced coke (0.08 wt%) over the Ni-Cu/SBA-15-EMC catalyst. 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%.