초록
<P><B>Abstract</B></P> <P>In the present work, agave bagasse enzymatic hydrolysates obtained with newly locally-available commercial enzymatic preparations were explored for their corresponding hydrogen and methane production potential in batch mode. The major levels in chemical oxygen demand and total carbohydrates were provided by enzymatic hydrolysates made with <I>Zymapect</I> and <I>Stonezyme</I>, respectively. Batch experiments demonstrated that <I>Celluclast 1.5L</I> achieves the maximum hydrogen productivity (1.88 L H<SUB>2</SUB>/L), from 1.6 to 2.0-fold higher than other alternatives, whereas <I>Zymapect</I> attains the highest methane productivity (1.32 L CH<SUB>4</SUB>/L), with high specific yield reached by both <I>Stonezyme</I> and <I>Zymapect</I> (162 and 163 L CH<SUB>4</SUB>/kg bagasse), from 1.7 to 2.0-fold higher than other options. Finally, a preliminary techno-economic analysis allowed to elucidate that the cheapest alternatives for hydrogen and methane production at batch scale are <I>Celluclast 1.5L</I> and <I>Stonezyme</I>, respectively. Overall, the present analysis could serve as groundwork for the selection of the best enzymatic alternatives for hydrogen and methane production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Potential for H<SUB>2</SUB>/CH<SUB>4</SUB> from agave bagasse enzymatic hydrolysates is demonstrated. </LI> <LI> <I>Celluclast 1.5L</I> displayed superior H<SUB>2</SUB> productivity than other options (1.88 L H<SUB>2</SUB>/L). </LI> <LI> <I>Celluclast 1.5 L</I> could reduce the cost for H<SUB>2</SUB> production by at least 40%. </LI> <LI> <I>Stonezyme</I> could reduce the cost for CH<SUB>4</SUB> production by at least 10%. </LI> <LI> Basis for further scale-up studies with new local enzymatic alternatives. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>