AMMONIA SEPARATION USING SEMIPERMEABLE MEMBRANES

摘要

PATENT 271-P-US03594 The present invention is a process for separating ammonia from mixtures of other gases or from aqueous streams. The ammonia-containing mixture is contacted with a membrane containing, as the active component, a salt having the structural formula: NR? X-, wherein each R is independently H or a straight chain or branched alkyl group and X- is an organic or inorganic anion. The said membrane is useful for the selective permeation of ammonia from mixtures of gases containing ammonia, nitrogen and hydrogen.