Abstract
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 (Fe 2 O 3 @Al 2 O 3 , Fe 2 O 3 @ZrO 2 , and Fe 2 O 3 @TiO 2 ) and (ii) concentration (0–200 mg/L) of additives. During the screening of additive type, approximately 14 wt% nano-sized (6 nm) hematite (Fe 2 O 3 ) doped Al 2 O 3 showed the highest improvement for biohydrogen production yield among all additives. Batch experiments conducted through dark fermentation demonstrated that 50 mg/L Fe 2 O 3 @Al 2 O 3 addition caused an acceleration in biohydrogen production by 34% and an increment in yield by 15%, despite even low concentrations Al 2 O 3 addition inhibited the process. • Hematite doped metal oxides synthesized using hydrothermal methods. • Biohydrogen production activity of Fe 2 O 3 @Al 2 O 3 , Fe 2 O 3 @ZrO 2 , Fe 2 O 3 @TiO 2 were tested. • Buffer solution and concentration selection carried out. • Fe 2 O 3 @Al 2 O 3 showed best enhancement with 15% increment in yield. • 50 mg/L Fe 2 O 3 @Al 2 O 3 accelerated biohydrogen production 34%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.