EFFECT OF CONDITION PHASE INVERSION AND WARMING-UP ON CELLULOSE ACETATE - SILICA FUME MEMBRANE PERFORMANCE

• Main Author: Dwi Marsha, Ervin
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/35118
• Institution: Institut Teknologi Bandung

Starch source is available abudandly in Indonesia but haven’t been optimally utilized because of the nature of starch that is not soluble in cold water. Therefore, the starch needs to be converted into products having economic value such as maltose. In the long term, this research aims to obtain a membrane that would be used as a bioreactor membrane. The efficiency of hydrolysis of starch enzymatic into maltose could be enhanced by the separation of starch and maltose. The significant difference in size between starch and maltose could serve as a basis for the separation using membrane technology. After obtaining the appropriate composition of acetate cellulose and silica fume in the membranes such membranes were treated with additional treatments namely phase inversion ini cold water at 120C and warming up. These additional treatments decrease the rejection toward starch and maltose. Meanwhile the flux of membranes was found to increase under this additional treatment. Membranes having been exposed to the additional treatments, demonstrate a decrease in membrane rejection towards starch and maltose, in a range of 8 – 15 % and 0 – 27 % relative to the rejection of membranes fabricated without additional treatment. On the other hand, membranes with additional treatment shows an increase in flux towards starch and maltose in a ranger of 28 – 78 % relative to the flux of membranes prepare without additional treatment.