Oxygen transfer to cassava starch solutions in an aerated, well-mixed bioreactor: Experimental and mass transfer studies

다국어 초록 (Multilingual Abstract)

Experimental and mass transfer studies of oxygen transfer to cassava starch solution in an aerated, wellmixedbioreactor of 2 L have been carried out. The volumetric mass transfer coefficient was estimated and parametricstudies were performed to study the effect of process variables of stirring rate, aeration rate, concentration of starchand temperature on the volumetric mass transfer coefficient. From the experimental results, it is evident that the firsttwo and the last variables are directly proportional to the volumetric mass transfer coefficient. However, the volumetricmass transfer coefficient is inversely proportional to the concentration of the starch. Also, the saturation dissolved oxygenconcentration is greatly affected by temperature and starch solution concentration. Whereas, stirring and aerationrates have neutral impacts on saturation dissolved oxygen concentration. Simulated data generated from obtained volumetricmass transfer coefficient agrees well with the experimental data, which indicates the accuracy of the coefficient.

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