Process and apparatus for removing ammonium from aqueous liquids

Details Process and apparatus for removing ammonium from aqueous liquids Process and apparatus for removing ammonium from aqueous liquids

1991-05-24

1992-07-14

Jones, W. Gary

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210639, 210741, 210743, 2101952, 21032175, 55 70, 55 54, 55 55, B01D 1504

Patent

active

051300265

ABSTRACT:
A process for the removal of ammonium from aqueous liquids, especially from fermentation broths, is disclosed. The process uses a cation exchanger membrane which separates a liquid on a donor side that is to be depleted of NH.sub.4.sup.+ from a solution on an acceptor side whose pH is higher than on the donor side. Because of the equilibrium

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Rautenbach et al., "Aufarbeitung Ammoniak enthaltender Abwasser--Verfahrens- und Kostenvergleich", Chem.-Ing.-Tech. 60, vol. 1, 1988, pp. 23-31.
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Chemical Abstracts, vol. 98, 1983, 98:145885a, "Ion separation by combination of permeation through ion-exchanging membrane and chelation," p. 42.
Abstracts, vol. 98, 1983, 98:199358z, "Amphoteric electrolyte membranes prepared by alternating copolymerization", p. 41.

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