Screening of biohydrogen production based on dark fermentation in the presence of nano-sized Fe2O3 doped metal oxide additives

Yoruklu H., Filiz B., Figen A. K., Ozkaya B.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.47, no.34, pp.15383-15396, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 34
  • Publication Date: 2022
  • Doi Number: 10.1016/j.ijhydene.2022.03.1480360-3199
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chemical Abstracts Core, Communication Abstracts, Environment Index, INSPEC
  • Page Numbers: pp.15383-15396
  • Keywords: Hematite, Nanoparticle, Dark fermentation, Biohydrogen enhancement, BIO-HYDROGEN PRODUCTION, ALPHA-FE2O3 NANOPARTICLES, HEMATITE, CATALYSTS, SILICA, IONS
  • Yıldız Technical University Affiliated: Yes


Increasing the biohydrogen production efficiency through the dark fermentation process has become the biggest challenge in recent years. We aim to enhance biohydrogen production yield by adding nano-sized iron oxide doped metal oxides prepared by the wet impregnation method. Biohydrogen production in the presence of additives was evaluated by the screening of (i) type (Fe2O3@Al2O3, Fe2O3@ZrO2, and Fe2O3@TiO2) and (ii) concentration (0-200 mg/L) of additives. During the screening of additive type, approximately 14 wt% nano-sized (6 nm) hematite (Fe2O3) doped Al2O3 showed the highest improvement for biohydrogen production yield among all additives. Batch experiments conducted through dark fermentation demonstrated that 50 mg/L Fe2O3@Al2O3 addition caused an acceleration in biohydrogen production by 34% and an increment in yield by 15%, despite even low concentrations Al2O3 addition inhibited the process. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.