Tri Widjaja, Soeprijanto, Ali Altway, Setiyo Gunawan, Raden Darmawan : Ethanol Production from molases using immobilized cells Ca Alginate and K-Carrageenan by mutaion Zymomomas mobilis in a packed bed bioreactor
Prof. Dr. Ir. Tri Widjaja M.Eng.
Prof. Dr. Ir. Soeprijanto M.Sc.
Setiyo Gunawan S.T., Ph.D
Raden Darmawan S.T., M.T.
The aim of this experiment was to study the effect of total sugar concentration using Ca-Alginate and K
Carrageenan immobilized cells of mutation Zymomonas mobilis on packed-bed and batch bioreactor performance for ethanol production. This experiment was carried out with total sugar concentrations of 14, 16, and 18% (v/v) and immobilized cells of Ca-Alginate and K-carrageenan at a concentration of 2% (w/v). The results revealed that the total sugar concentration influenced the concentration and productivity of ethanol. Immobilized Ca-Alginate cells produced the maximum ethanol concentration, yield and productivity at 60.83 g/L, 43.94% and 24.33 g/L.hr,
respectively. Meanwhile, immobilized K-Carrageenan cells produced the maximum ethanol concentration, yield and productivity at 60.54 g/L.hr, 41.85% and 24.22 g/L.hr, respectively. In a batch fermentation process showed that the maximum ethanol concentration, yield and productivity were 63.47 g/L, 43.79%, 0.88 g/L.hr, respectively.