Stabilization of Arsenite Wastes with Prior Oxidation

Stabilization of Arsenite Wastes with Prior Oxidation

The stabilization of arsenite hazardous waste is more difficult than arsenate waste. Oxidation of arsenite was investigated as a pretreatment before stabilization of the resulting arsenate. The effectiveness of air oxidation was limited and depended on the amount of water present. Hydrogen peroxide...

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Veröffentlicht in:Journal of environmental engineering (New York, N.Y.) N.Y.), 2004-09, Vol.130 (9), p.1063-1066
Hauptverfasser: Fuessle, Robert W, Taylor, Max A
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Other industrial wastes. Sewage sludge
Pollution
TECHNICAL NOTES
Wastes
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Zusammenfassung:The stabilization of arsenite hazardous waste is more difficult than arsenate waste. Oxidation of arsenite was investigated as a pretreatment before stabilization of the resulting arsenate. The effectiveness of air oxidation was limited and depended on the amount of water present. Hydrogen peroxide oxidation was effective but limited by reactions with calcium hydroxide. After oxidation, the resulting arsenate waste was effectively stabilized using ferric sulfate.
ISSN:0733-9372
1943-7870
DOI:10.1061/(ASCE)0733-9372(2004)130:9(1063)