Biohydrogen production from autoclaved fruit and vegetable wastes by dry fermentation under thermophilic condition. (12th July 2019)

• Record Type: Journal Article
• Authors: Abubackar, Haris Nalakath; Keskin, Tugba; Yazgin, Okyanus; Gunay, Bensu; Arslan, Kubra; Azbar, Nuri
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 34(2019)
• Page Start: 18776
• Page End: 18784
• Publication Date: 2019-07-12
• Subjects: Biohydrogen -- Autoclaving -- Fruit and vegetable waste -- Bioenergy; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.12.068
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Dark fermentative hydrogen production from organic waste is an attractive technique that simultaneously treats waste along with generation of renewable fuel. In this study, a relative new technology named dark dry fermentation was tested in a 55-L reactor to treat fruit and vegetable waste (FVW) along with simultaneous generation of biohydrogen. To understand the effect of autoclaving as a pretreatment method on FVW for subsequent biohydrogen production, two independent experiments were performed; one with autoclaved waste (experiment I) and another by using non autoclaved waste (experiment II). From the analyses, it was found that maximum hydrogen % obtained for experiment I was 41% (v/v%) whereas, for experiment II was 21%. In terms of total hydrogen produced, around 30% higher production was observed with experiment I compared to experiment II. The hydrogen yields for experiment I and experiment II were respectively, 27.19 and 20.81 NmL H2 /gVS (VS = volatile solid added), and the metabolites (VFAs) preferentially produced were acetic acid and iso-butyric acid. Highlights: Dark dry anaerobic fermentation for biohydrogen production was studied. Autoclaved waste produced 30% higher amount of biohydrogen compared to non-autoclaved. Acetic acid and iso-butyric acid were the main metabolites.