Processing of liquid propellant reaction liquors by pervaporation

Unsymmetrical dimethylhydrazine and monomethylhydrazine are the two well-kn own liquid propellants. Substantial amounts of sodium chloride present in t he aqueous unsymmetrical dimethylhydrazine and monomethylhydrazine reaction liquors. Pervaporation experiments have been conducted using dense chitosa n membrane for desalting of these reaction liquors. The effect of membrane thickness, salt concentration in the feed, and permeate pressures on flux a nd % rejection have been studied and discussed to optimize the conditions. (C) 1999 John Wiley & Sons, Inc.