Bio-production of ethanol in packed bioreactor

الملخص EN

A lab-scale packed Biofilm reactor was used for ethanol production by fermentation of sugar solution using a local isolated yeast saccharomyces cerevisia and guitar aldehyde on gelatin as a covalent bounding agent.

In this study four types of packing in the reactor were used.

They are ; polypropylene mesh, glass rushing rings, ceramic rushing rings and glass beads.

Glucose solutions were used as substrate with four concentrations ; (5, 10, 15, 20 g / l).

Results show that the ethanol productivity was increase with increasing sugar concentration.

Also it was found that polypropylene mesh packing give the highest productivity while glass beads gives the lowest productivity.

The experiments were conducted at three temperatures ; 30, 35, 40˚C.

Highest value of productivity was obtained at 35˚C.

Finally results show that ethanol productivity increased with increasing the feed ratio of yeast / sugar.