{Reference Type}: Journal Article
{Title}: Enhanced the energy conversion of corn stalk via co-production of photo-fermentation biohydrogen and bioethanol.
{Author}: Sun P;Lu C;Liang X;Wang G;Song C;Zhang Q;Zhang Z;Wang H;Alam M;Liu H;Wang K;Xia C;Jiang D;
{Journal}: Bioresour Technol
{Volume}: 408
{Issue}: 0
{Year}: 2024 Sep 31
{Factor}: 11.889
{DOI}: 10.1016/j.biortech.2024.131196
{Abstract}: 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.