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

Valizadeh S 1 , Lam SS 2 , Ko CH 3 , Lee SH 4 , Farooq A 1 , Yu YJ 3 Show all authors , Jeon JK 5 , Jung SC 6 , Rhee GH 7 , Park YK 8

Affiliations 

  • 1 School of Environment Engineering, University of Seoul, Seoul 02505, Republic of Korea
  • 2 Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (Akuatrop), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
  • 3 School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
  • 4 Department of Mineral Resources & Energy Engineering, Chonbuk National University, Jeonju 54896, Republic of Korea
  • 5 Department Chemical Engineering, Kongju National University, Cheonan 31081, Republic of Korea
  • 6 Department of Environmental Engineering, Sunchon National University, Suncheon 57923, Republic of Korea
  • 7 Department of Mechanical and Information Engineering, University of Seoul, Seoul 02505, Republic of Korea
  • 8 School of Environment Engineering, University of Seoul, Seoul 02505, Republic of Korea. Electronic address: catalica@uos.ac.kr
Bioresour Technol, 2021 Jan;320(Pt B):124313.
PMID: 33197736 DOI: 10.1016/j.biortech.2020.124313

Abstract

Steam and air gasification with 5 wt% Ni/Al2O3 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-Al2O3 pellets in Ni-EG resulted in higher activity, stability, and selectivity than Ni-H in both steam and air gasification.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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