A novel sorbing material activated carbon - silica was made to adsorb coloured dyes contami- nant. The adsorptive properties of the activated carbon - silica and commercially available activated carbon to Alizarin red were investigated by UV spectroscopic methodology. The results showed that activated carbon-silica performed better adsorption to Alizarin red than commercially available activated carbon.Under the conditions of the mass ratio of the alizarin red to the activated carbon - silica for 0.5% and decolorizing time for 25 rain at 40 ℃, decolorization rate of Alizarin red solution was 94.79%.%为了将新型吸附材料用于处理染料等有色污染物，选用了实验室自制新型活性炭-二氧化硅吸附材和市售活性炭用UV光谱法研究了它们对茜素红溶液脱色效果。结果表明，新型吸附材料较市售吸附材料具有更好的脱色效果。在脱色时间为25min、脱色温度40℃、活性炭一二氧化硅与茜素红的质量比为200：1条件下，茜素红溶液的脱色率达到94．79％。
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