2. Control of Freezing Front Structure and Its Effect on the Concentration-efficiency in the Progressive Freeze-concentration(Papers presented at the 40th Annual Meeting, April 19, 1994, Tokyo)

Abstract

The concentration efficiency in the progressive freeze concentration was related to the ice structure of the freezing front. A high freeze-concentration efficiency was obtained under the conditions at which a smooth solid-liquid interface was formed. An apparent distribution coefficient of a solute between the solid and liquid phases was useful to describe the concentration efficiency. The apparent distribution coefficient, reflecting the ice structure at the freezing front, was related to the operating conditions represented by the moving speed of the freezing front and the speed of stirring in the solution phase.