초록
<P><B>Abstract</B></P> <P>In this study, the impacts of banana peels pre-treatment stage on photofermentative hydrogen production of <I>Rhodobacter sphaeroides</I> 158 DSM using brewery wastewater (BWW) were investigated in a batch bioreactor. The experimental results indicate that banana peels pre-treatments can significantly enhance the cumulative hydrogen production. The maximum hydrogen production yield (408.33 mL H<SUB>2</SUB> L<SUP>−1</SUP> <SUB>wastewater</SUB>) was achieved from the substrate, which was composed of 50% BWW pretreated with 1 g L<SUP>−1</SUP> of banana peels for 2 h and 50% standard medium. This highest amount of hydrogen production was 2.7-folds higher than those that applied the same percentage of raw BWW as the substrate source.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pre-treated brewery wastewater with banana peels enhanced the biohydrogen production. </LI> <LI> Impacts of pre-treatment stage using banana peels and medium blending ratios were investigated. </LI> <LI> Treated brewery wastewater blended with 50% standard medium enhanced hydrogen 2.7 folds. </LI> <LI> The achieved maximum hydrogen production yield was 408.33 mL H<SUB>2</SUB> L<SUP>−1</SUP>. </LI> <LI> Pre-treatment stage of 2 h duration and 1 g L<SUP>−1</SUP> of banana peels waste was the optimum. </LI> </UL> </P>