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A combination of ferric chloride and sodium nitrite significantly improved the wet oxidation of the azo dye Acid Orange 7 (AO7) in acid aqueous media (pH 2.6) under moderate conditions (T=150°C; oxygen pressure=0.5MPa). To evaluate the catalytic system, wet oxidation of AO7 was carried out at temperatures between 90 and 150°C and oxygen pressures ranging from 0.1 to 0.5MPa. The effect of initial solution...
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