%0 Journal Article
%T Enhanced the energy conversion of corn stalk via co-production of photo-fermentation biohydrogen and bioethanol.
%A Sun P
%A Lu C
%A Liang X
%A Wang G
%A Song C
%A Zhang Q
%A Zhang Z
%A Wang H
%A Alam M
%A Liu H
%A Wang K
%A Xia C
%A Jiang D
%J Bioresour Technol
%V 408
%N 0
%D 2024 Sep 31
%M 39094961
%F 11.889
%R 10.1016/j.biortech.2024.131196
%X Hydrogen-ethanol co-production can significantly improve the energy conversion efficiency of corn stalk (CS). In this study, with CS as the raw material, the co-production characteristics of one-step and two-step photo-fermentation hydrogen production (PFHP) and ethanol production were investigated. In addition, the gas and liquid characteristics of the experiment were analyzed. The kinetics of hydrogen-ethanol co-production was calculated, and the economics of hydrogen and ethanol were analyzed. Results of the experiments indicated that the two-step hydrogen-ethanol co-production had the best hydrogen production performance when the concentration of CS was 25 g/L. The total hydrogen production was 350.08 mL, and the hydrogen yield was 70.02 mL/g, which was 2.45 times higher than that of the one-step method. The efficiency of hydrogen-ethanol co-production was 17.79 %, which was 2.76 times more efficient than hydrogen compared to fermentation with hydrogen. The result provides technical reference for the high-quality utilization of CS.