Fermentative biohydrogen production potential of sorghum distillers grains using anaerobic microflora at various pH values

Bibliographic Details
Title: Fermentative biohydrogen production potential of sorghum distillers grains using anaerobic microflora at various pH values
Authors: Ching-Chun Lu, Chiu-Yue Lin
Source: Next Energy, Vol 7, Iss , Pp 100284- (2025)
Publisher Information: Elsevier, 2025.
Publication Year: 2025
Collection: LCC:Renewable energy sources
Subject Terms: Anaerobic fermentation, Biohydrogen, Hydrogen production rate, Hydrogen yield, pH effect, Sorghum distillers grains, Energy industries. Energy policy. Fuel trade, HD9502-9502.5, Renewable energy sources, TJ807-830
More Details: Sorghum distillers grains (SDGs) are rich in proteins, vitamins, and minerals and are a good feedstock for anaerobically generating biogases such as biohydrogen and biomethane. The present work aims to investigate the anaerobic biohydrogen production potential of SDG to explore its added value. pH is an important operating factor affecting biological reactions and was tested at values of 5.0, 5.5, 6.0, and 6.5. The experimental results show that the hydrogen production rate (HPR) is less pH-dependent, but the hydrogen yield (HY) is rather pH-dependent with near-neutral conditions favoring biohydrogen production. pH 6.5 resulted in an HPR of 4.9 L/L-d (188 mmol/L-d) and peak HY of 81 mL/g chemical oxygen demand. It is shown that SDG is a new and prospective biomass source for biohydrogen production, and with this application, the problem of treating kaoliang liquor SDG could be reduced. Approaches to increase biohydrogen production and applications of the experimental results were also elucidated.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2949-821X
Relation: http://www.sciencedirect.com/science/article/pii/S2949821X2500047X; https://doaj.org/toc/2949-821X
DOI: 10.1016/j.nxener.2025.100284
Access URL: https://doaj.org/article/cbced843d4a644b381851494c4dbeaaf
Accession Number: edsdoj.bced843d4a644b381851494c4dbeaaf
Database: Directory of Open Access Journals
More Details
ISSN:2949821X
DOI:10.1016/j.nxener.2025.100284
Published in:Next Energy
Language:English