Kyrychuk I. Treatment of biological fluids of milk origin by nanofiltration and reverse osmosis

The dissertation is devoted to the study of nanofiltration and reverses osmosis processes for the separation of biological fluids of milk origin such as nanofiltration whey permeate and dairy flush waters. As a result of the theoretical and experimental studies using modern methods and experimental set-up the rational values of parameters of separation process were determined; reflection coefficient, solute permeability coefficient and mass transfer coefficient of reverse osmosis membranes were calculated during separation of lactose solutions and nanofiltration whey permeate; the mathematical Spiegler-Kedem/film model was improved; the mechanism of membrane fouling was studied after dairy flush waters concentration; the recommendation of the membranes regeneration was developed after the separation of dairy flush waters; physicochemical parameters of concentrates of dairy flush waters were defined; the schemes for treatment of biological fluids of milk origin were developed and confirmed by utility model patent and patent for invention of Ukraine. The results of the research of dairy flush waters treatment were used for POSP named after Shevchenko ("Uhrynivmoloko"). Some of statements and practical conclusions of the dissertation thesis are used in the educational process of the National University of Food Technologies.