Ammonia separation using semipermeable membranes

Gas separation – Means within gas stream for conducting concentrate to collector

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55 70, B01D 5322

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active

047625350

ABSTRACT:
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.sub.4.sup.+ X.sup.-, wherein each R is independently H or a straight chain or branched alkyl group and X.sup.- is an organic or inorganic anion. The membrane is useful for the selective permeation of ammonia from mixtures of gases containing ammonia, nitrogen and hydrogen.

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