Journal
BIORESOURCE TECHNOLOGY
Volume 340, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125562
Keywords
Algal biomass; Echeuma spinosum; Biohydrogen Dynamic membrane bioreactor; Propionic acid
Funding
- National Research Foundation of Korea (NRF) - Korean government (Ministry of Science ICT) [NRF-2019M3E6A1103839, 2020R1A2B5B02001757]
- National Research Foundation of Korea [2020R1A2B5B02001757] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
This study achieved continuous biohydrogen production from red algal biomass using a dynamic membrane bioreactor. Metabolic flux analysis revealed butyric acid and propionic acid as major by-products of the pathways involved in hydrogen production and consumption. The study also identified microbial species that play significant roles in hydrogenase and CoA-transferase expression.
This study aimed to achieve continuous biohydrogen production from red algal biomass using a dynamic membrane bioreactor (DMBR). The DMBR was continuously fed with pretreated Echeuma spinosum containing 20 g/L hexose. The highest average hydrogen production rate (HPR) of 21.58 +/- 1.59 L/L-d was observed at HRT 3 h, which was higher than previous reports for continuous H2 production from biomass feedstock. Metabolic flux analysis revealed that butyric acid and propionic acid were the major by-products of the H2-producing and H2-consuming pathways, respectively, of the algal biomass fermentation. Hydrogen consumption by propionic acid pathway could not be prevented completely by heat treatment. PICRUSt2 analysis predicted that Clostridium sp., Anaerostipes sp., and Caproiciproducens sp. might significantly contribute to the expression of both ferredoxin hydrogenase and propionate CoA-transferase. This study would provide the design and operational information on high-rate bioreactor for continuous hydrogen production using biomass.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available