Related Experiment Video
Updated: Aug 19, 2025
Microalgae Cultivation and Biomass Quantification in a Bench-Scale Photobioreactor with Corrosive Flue Gases
Published on: December 19, 2019
Enhancing biohydrogen yield from corn stover by photo fermentation via adjusting photobioreactor headspace pressure
Guanning Xiang1, Huan Zhang2, Yameng Li2
1Key Laboratory of New Materials and Facilities for Rural Renewable Energy, (MOA of China), Henan Agricultural University, Zhengzhou 450002, China; Institute of Agricultural Engineering, Huanghe S & T University, Zhengzhou 450006, China.
Abstract:
In this study, the effect of bioreactor headspace pressure regulation on photo-fermentative hydrogen production (PFHP) from corn stover (CS) was investigated. The results showed that the headspace pressure could significantly affect the performance of PFHP. With the decrease in the reactor headspace pressure (100 kPa-10 kPa), cumulative biohydrogen production firstincreased and then decreased, the maximum hydrogen yield of 546.57 mL was obtained at the headspace pressure of 30 kPa. The parameters of Gompertz model showed a lower hydrogen partial pressure was beneficial to speed up the reaction process and shorten the hydrogen production delay time of the system, however, too low pressure would inhibit the metabolism of microorganisms in the PFHP process, resulting lower hydrogen yield obtained.
