초록
<P><B>Abstract</B></P> <P>In the present study, the effect of furan derivatives (furfural and 5-hydroxymethylfurfural) and phenolic compounds (vanillin and syringaldehyde) on hydrogen production from organic fraction of municipal solid waste (OFMSW) was investigated using co-culture of facultative anaerobes <I>Enterobacter aerogenes</I> and <I>E. coli</I>. The inhibitors were applied in the concentration ranges of 0.25, 0.5, 1, 2 and 5g/L each. Inhibition coefficients of phenolic compounds were higher than those of furan derivatives and vanillin exhibited maximum inhibition coefficients correspondingly lowest hydrogen yield among all inhibitors. Furfural and 5-hydroxymethylfurfural addition resulted in an average decrease of 26.99% and 37.16% in hydrogen yield respectively, while vanillin and syringaldehyde resulted in 49.40% and 42.26% average decrease in hydrogen yield respectively. Further analysis revealed that Furfural and 5-hydroxymethylfurfural were completely degraded up to concentrations of 1g/L, while vanillin and syringaldehyde were degraded completely up to the concentration of 0.5g/L. Volatile fatty acid generation decreased with inhibitors addition.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Co-culture of <I>Enterobacter aerogenes</I> and <I>E. coli</I> was used in the study. </LI> <LI> Hydrogen production was inhibited by addition of furan derivatives and phenolic compounds. </LI> <LI> Phenolic compounds exhibited more inhibition on hydrogen production than furan derivatives. </LI> <LI> Phenolic compounds were degraded more efficiently as compare to furan derivatives. </LI> </UL> </P>