Publication Details (including relevant citation information):
Science Journal Ubon Ratchathani University, Vol.1, No.1, 2010, PP82-89.
The batch fermentation kinetic of gluconic acid production has been studied. The continuous
fermentation process of glucose by Aspergillus niger to produce gluconic acid under the influence of inlet substrate concentration and hydraulic retention time has also been investigated. The fermentation was modeled to be carried out in a continuous stirred tank reactor. The results showed that at the studied inlet glucose concentration of 150, 200, and 250 g/l, the hydraulic retention time resulted in the increasing amount of cell and gluconic acid concentration but decreasing glucose concentration at the outlet stream of the reactor. The model results also suggested that the possible range of hydraulic retention time for the inlet substrate concentration of 150, 200, and 250 g/l were 3-13, 8-12, and 7-11 h, respectively. Therefore the recommended values of hydraulic retention time were 13, 12 and 11 h for the inlet substrate concentration of 150, 200, and 250 g/l, respectively.