Title of article :
BIOETHANOL PRODUCTION BY CALCIUM ALGINATE-IMMOBILISED ST1 YEAST SYSTEM: EFFECTS OF SIZE OF BEADS, RATIO AND CONCENTRATION
Author/Authors :
ZAIN, M. M. Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment - Department of Chemical and Process Engineering, Malaysia , KOFLI, N. T. Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment - Department of Chemical and Process Engineering, Malaysia , YAHYA, S. R. S. Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment - Department of Chemical and Process Engineering, Malaysia
Abstract :
Immobilized yeast-cell technology posses several advantages in bioethanol production due to its potential to increase the ethanol yield by eliminating unit process used. Thus, process expenses in cell recovery and reutilization can be minimised. The aim of this study is to investigate the influence of three parameters (substrate concentrations, size of alginate beads and ratio of volume of beads to volume of medium) on local isolated yeast (ST1) which immobilized using calcium alginate fermentation system. The most affected ethanol production by calcium alginateimmobilised ST1 yeast system were ratio of volume of the beads to the volume of substrate and concentration of LBS. Highest theoretical yield, 78% was obtained in ST1- alginate beads with the size of beads 0.5 cm, ratio volume of beads to the volume of LBS media 0.4 and 150 g/L concentration of LBS.
Keywords :
immobilization , bioethanol , calcium alginate
Journal title :
IIUM Engineering Journal
Journal title :
IIUM Engineering Journal
