Nitrate activation of response surface methodology directly blended activated carbon D-3RNL yellow dye absorption properties of College of Chemistry and Chemical Engineering, Chemical IM 072 Instructor: Abstract: In this paper, response surface optimization method of nitric acid directly activated carbon blended yellow D-3RNL adsorption performance of the adsorption time, initial concentration of dye solution, initial pH, adsorption temperature on the rate of decolorization, Optimization of the nitric acid dye adsorption on activated carbon decolorization of the best The results show that, pH dye absorption bleaching pairs have a significant impact; in the dye solution, the initial pH 2, initial dye concentration of 30mg / L, adsorption time was 16h, adsorption temperature is 40 ℃, when the activated carbon dosage 375g/25mL , nitric acid directly activated carbon blended yellow D-3RNL the adsorption rate of 405% Key words: nitric acid activated carbon; directly blended yellow D-3RNL; adsorption; response surface;