ABSTRACT
I. INTRODUCTION Melt crystallization is a standard chemical industries purification process for chemical products such as naphthalene, para-xylene, dichlorobenzene, acrylic acid, monochloroacetic acid, bisphenol A, and others [1]. It is seen as an extremely selective separation process that can reduce contaminant levels to the ppm range. This provides an effective means to purify some products. Freeze concentration (FC) is usually associated with the process when the crystal lizing component is water. In this chapter we focus on the crystallization of water and limit our discussion to FC of aqueous solutions. The purpose of FC is to provide a means to separate pure water from a solution. This will provide either high quality water and reduced volumes of waste or, in the case of food liquids, a high quality concentrate with only water removed from the original feed product.
