초록
<P><B>Abstract</B></P> <P>In this study, hydrogen fermentation of glucose in fixed bed reactors using polyethylene (thin and less porous) and ceramic (thick and high porous) material as a support for biofilm formation has been investigated. The results showed that thick porous biofilm developed by ceramic carriers favored the growth of more amount of biomass; however, accelerating the formation of propionic acid and resulting in a lower hydrogen production. In contrast, and interestingly, polyethylene material has supported the formation of thin biofilm and allowed higher hydrogen production performance. The glucose consumption was more than 97% in both the cases. The maximum productivity was achieved in the case of polyethylene material supported reactor.</P>