[N+:1]([O-:6])([N+:3]([O-:5])=[O:4])=[O:2].[N+:7]([O-])=[O:8].[OH-].[Na+:11]>>[N+:3]([O-:5])([O-:8])=[O:4].[Na+:11].[N:1]([O-:6])=[O:2].[Na+:11].[N:7]=[O:8]Currently, the KSC oxidizer scrubbers react nitrogen tetroxide and/or nitrogen dioxide with nominally 25-wt. % sodium hydroxide, which produces sodium nitrate, sodium nitrite, and nitric oxide. The spent caustic scrubber liquor could be used as a fertilizer once the pH is adjusted; however, substitution of potassium hydroxide for sodium hydroxide increases the commercial value of the scrubber liquor as a fertilizer.
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