HETEROGENEOUS ION-EXCHANGE CELLULOSE MEMBRANES FOR ELECTRODIALYSIS

A new method of obtaining cellulose heterogeneous ion exchange membranes was designed for an electrodialysis with the purpose of desalting of salt and brackish waters, and also for the reagentless processing of technogenic waste as weak solutions of salts with the simultaneous regeneration of acids and lyes and returning them into technological process. Influence of composition of the obtained membranes on their electrotransport characteristics was investigated. A comparative analysis of the electrical conductivity and selectivity of membranes with serial ion exchange membranes MK-40 and MA-41 was produced. It was shown that membranes samples have sufficiently high conductivity, which in some cases is higher than at the serial membranes MK-40 and MA-41 It was found that the selectivity of the new membranes is not lower than at serial ion exchange membranes. Efficiency of obtained membranes is near to serial at desalination of solution of natrium sulfate. Bibl. 8, Fig. 6, Tab. 3.