The decolorization of five kinds of azo dyes-azo blue, eriochrome black T, arsenazo III, acid chrome blue K and methyl orange,and one kind of quinoid dye-alizarine red with potassium ferrate are studied.

• 研究了高铁酸钾对偶氮蓝、铬黑 T、偶氮胂 III、酸性铬蓝 K和甲基橙 5种偶氮染料及一种醌类染料茜素红的脱色作用 .；结果表明 :除偶氮蓝、酸性铬蓝 K外；其它 4种染液均可在 30分钟内达到 95%25以上的脱色率