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

Yörüklü H., Filiz B. C., Kantürk Figen A., Özkaya B.

International Journal of Hydrogen Energy, cilt.47, sa.34, ss.15383-15396, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 34
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.ijhydene.2022.03.148
  • Dergi Adı: International Journal of Hydrogen Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.15383-15396
  • Anahtar Kelimeler: Biohydrogen enhancement, Dark fermentation, Hematite, Nanoparticle
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

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.