Continuous dark fermentation by industrial food wastewater: the effect of hydraulic retention time on hydrogen production and microbial variation

In this study, we performed co-digestion of industrial food wastewater in a hybrid upflow anaerobic sludge blanket (HUASB) reactor by dark fermentation (DF). Hydraulic retention times (HRT) of 3, 8, and 12 h at a minimum of 30 cycles were tested to determine their effects on hydrogen production and...

Full description

Saved in:
Bibliographic Details
Published in:Biomass conversion and biorefinery 2024-10, Vol.14 (19), p.23909-23920
Main Authors: Casanova-Mina, Alejandra Angélica, Suárez-Vázquez, Santiago Iván, Acuña-Askar, Karim, Alfaro-Barbosa, Juan Manuel, Cruz-López, Arquímedes
Format: Article
Language:English
Subjects:
Biotechnology
Energy
Original Article
Renewable and Green Energy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, we performed co-digestion of industrial food wastewater in a hybrid upflow anaerobic sludge blanket (HUASB) reactor by dark fermentation (DF). Hydraulic retention times (HRT) of 3, 8, and 12 h at a minimum of 30 cycles were tested to determine their effects on hydrogen production and microbial population diversity. The results indicated that HRTs of 3, 8, and 12 h produced hydrogen concentrations of 45 ± 10%, 50 ± 10%, and 36 ± 14%, respectively, and the rest was mostly CO 2 . The microbial community structure indicated that Lactobacillus plantarum , L. fermentum , L. casei , and L. delbrueckii proliferated mainly at HRT ≤ 8 h. The 50-cycle HUASB operating conditions at an HRT of 8 h yielded 3.68 ± 2.83 mL H 2 gCOD removed −1 and a volumetric hydrogen production rate of 0.1 L H 2 L −1  day −1 .
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-023-04596-w