초록
<P><B>Abstract</B></P> <P>Photo-fermentative is an endothermic reaction driven by light energy to overcome the energy barrier. This communication conducted photo-fermentation hydrogen tests with micro-grinded, enzyme-hydrolyzed maize straws considering the effects of broth temperature ranging 28.2–54.5 °C. The hydrogen production rate was first increased with broth temperature, peaked at 39.6 °C, and then decreased at higher temperature range. The photo-fermentative process can be approximated as a catalytic reaction with positive activation energy and positive activation entropy, an endothermic, entropy-driven complexation process.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Photofermentative hydrogen production was tested at meso to thermophilic conditions. </LI> <LI> Positive activation energy was noted at mesophilic condition. </LI> <LI> Negative temperature dependence was noted at thermophilic condition. </LI> <LI> Activation energy was estimated based on data from mesophilic tests. </LI> </UL> </P>