Biohydrogen production from catalytic conversion of food waste via steam and air gasification using eggshell- and homo-type Ni/Al2O3 catalysts. (January 2021)

• Record Type: Journal Article
• Authors: Valizadeh, Soheil; Lam, Su Shiung; Ko, Chang Hyun; Lee, See Hoon; Farooq, Abid; Yu, Yeon Jeong; Jeon, Jong-Ki; Jung, Sang-Chul; Rhee, Gwang Hoon; Park, Young-Kwon
• Is Part Of: Bioresource technology. Volume 320: Part B(2021)
• Publication Date: 2021-01
• Subjects: Food waste -- Gasification -- Thermal conversion -- Eggshell-type catalyst; 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.2020.124313
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Food waste is a proper feedstock to generate hydrogen via catalytic gasification. Steam gasification produces higher hydrogen yield than air gasification. Ni was loaded on eggshell type Al2 O3 and homo type Al2 O3 . Ni/Eggshell Al2 O3 produced higher hydrogen yield than Ni/Homo Al2 O3 . Abstract: Steam and air gasification with 5 wt% Ni/Al2 O3 eggshell (Ni-EG) and homo (Ni-H) catalysts were performed for the first time to produce biohydrogen from food waste. The steam gasification produced comparably higher gas yield than air gasification. In non-catalytic experiments, steam gasification generated a higher volume percent of H2, whereas more CO, CO2, CH4, and C2 -C4 were produced in air gasification. Ni-EG demonstrated higher potential to obtain H2 -rich gases with a low C2 -C4 content compared to that obtained by Ni-H, particularly in steam gasification at 800 °C, which produced gaseous products with 59.48 vol% H2 . The long-term activity of both catalysts in steam gasification was evaluated, and Ni-EG exhibited higher stability than Ni-H. The ideal distribution of Ni species on the outer region of γ-Al2 O3 pellets in Ni-EG resulted in higher activity, stability, and selectivity than Ni-H in both steam and air gasification.