초록
<P><B>Abstract</B></P> <P>In this work, different proportions of model fruit and vegetable wastes (MFVW) and acid hydrolyzed fish wastes (AHFW) were used for hydrogen production in a minimum culture medium based on seawater. Experiments were performed in pH-controlled Stirred Tank Reactor (STR) with or without the addition of nitrogen and sulfur sources. The total H<SUB>2</SUB> production and the maximum hydrogen productivity of <I>T. maritima</I> in the culture medium, containing MFVW and AHFW (45 mmol L<SUP>−1</SUP> carbohydrates) at a C/N ratio of 12, were 132 mmol L<SUP>−1</SUP> and 15 mmol h<SUP>−1</SUP> L<SUP>−1</SUP>, respectively. However, tripling the concentration of carbohydrates to reach a C/N ratio of 22, has increased two times the maximum H<SUB>2</SUB> productivity (28 mmol h<SUP>−1</SUP> L<SUP>−1</SUP>) due to the improvement in nutrient balance. The cumulative H<SUB>2</SUB> production was 285 mmol L<SUP>−1</SUP>, yielding a potential energy generation of 0.1210<SUP>3</SUP> MJ ton<SUP>−1</SUP> wastes, which could be an interesting alternative for energy recovery.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Fermentative hyperthermophilic H<SUB>2</SUB> production from animal and vegetable wastes. </LI> <LI> Fish wastes addition enhanced significantly H<SUB>2</SUB> production. </LI> <LI> Fish wastes substitute sulfur and nitrogen nutrients for <I>T. maritima</I> growth. </LI> <LI> The higher H<SUB>2</SUB> productivity of 28.2 mmol h<SUP>−1</SUP> L<SUP>−1</SUP> was obtained at C/N ratio of 22. </LI> </UL> </P>