Study of Novel Separation Technique 'Pervaporation' for Separation of Acetronitrile and Tetrahydrofuran from waste Stream

Abstract

Pervaporation is a very effective membrane process for the separation of liquid mixtures. Due to its economics, efficiency and simplicity, it can easily be integrated into the distillation and rectification processes and, depending on the specific operating parameters, even partially replace them. Pervaporation technology can effectively recovery acetonitrile from the waste stream and separate a tetrahydrofuran (THF) solvent-water waste stream. Pervaporation technique was used for the mixture of close boiling point and to break the azeotrope in the most economical way. The combination of Distillation columns and pervaporation unit were used for recovery of acetoniritle which was not TDS process and was economically feasible for larger stream. This technique used is economical and energy efficient for the separation.