1995 年 31 巻 1 号 p. 43-50
Based on the results of batch culture experiments on the starch wastewater treatment using Aspergillus niger pellets, parameter fitting and model simulation were carried out in order to apply to the process design, operation and control. Starch was hydrolyzed into glucose and the resulting glucose was immediately metabolized by pellets, while a part accumulated in the form of citric acid. Kinetic parameters were found to be approximately identical regardless of the pellet diameter when calculated using a starch decomposition model for A. niger. From the results of model simulation, it was estimated that SRT and HRT needed to be set at 10 days and 12 hrs, respectively, in order to attain over 90% of the starch decomposition efficiency.
