Removal of bromides from arsenic acid solution

Bromide ions when used as the redox intermediates in the oxidation of arsenic (III) oxide to arsenic (V) acid can be removed from a solution having a major proportion of arsenic acid by treatment with an oxidant selected from H2O2, O3 or Cr(VI) to oxidize the bromide to bromine followed by purging w...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	AHN, BYUNG K, MORRIS, KENNETH A
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Bromide ions when used as the redox intermediates in the oxidation of arsenic (III) oxide to arsenic (V) acid can be removed from a solution having a major proportion of arsenic acid by treatment with an oxidant selected from H2O2, O3 or Cr(VI) to oxidize the bromide to bromine followed by purging with air, nitrogen or other inert gas to sweep out the resultant bromine. The bromine can be recovered and recycled to a fresh batch of arsenic (III) oxide.