Related Experiment Video
Updated: Jun 26, 2026

Biogas Purification through the use of a Microalgae-Bacterial System in Semi-Industrial High Rate Algal Ponds
Published on: March 22, 2024
Removal of headspace CO2 increases biological hydrogen production by C. acetobutylicum
H Alshiyab1, M S Kalil, A A Hamid
1Faculty of Science and Technology, School of Bioscience and Biotechnology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia.
Abstract:
The effect of removal of resultant gas resulted in enhancement of the H2 yield. The technique of CO2 scavenging resulted in H2 yield being improved from 408 mL g(-1) to reach the maximum of 422 mL g'. The highest hydrogen productivity of 87.9 ml L(-1) h(-1) was obtained by CO2 scavenging. Biomass concentration was enhanced to 1.47 g L(-1), Y(P,X) of 287 ml g(-1) L(-1), Y(X/S) of 0.294 and Y(H2/s) of 0.0377 by the use of CO2 scavenging. The results suggested that the presence of the gaseous products in fermentation medium and headspace adversely effect biomass growth and hydrogen production.
Related Concept Videos
Bioremediation
Microbes and Methanogenesis
Bioreactor Controls-II
Microbial Interactions: Mutualism
Microbial Bioremediation of Hydrocarbons
Carbon-dioxide Fixation

