膨胀石墨对活性染料水溶液的吸附脱色作用

Adsorption and Decoloration of the Aqueous Solution of Active Dye with Expanded Graphite

研究了膨胀石墨对活性艳红K-2BP和活性嫩黄K-4G这2种酸性染料水溶液的吸附脱色作用,考察了浓度、用量、pH值、温度对2种染料废水脱色率的影响.结果表明:脱色率均随着pH值的增大而增加,相同pH值时的脱色率随着浓度的降低而增大,不同浓度下脱色率随着石墨用量的增加而增大,随温度的升高而增大,温度对活性艳红K-2BP吸附的影响较活性嫩黄K-4G的大.

The adsorption and decoloring of reactive brilliant red K-2BP and reactive light yellow K-4G from aqueous solution were studied in the presence of expanded graphite, and the influences of the concentrations, the dosages, pH values and the temperatures on the decoloration ratios were investigated as well. The experiment resuits indicated that all of decoloration ratios would increase along with enhancing pH values, decreasing the concentrations at the same pH value, enhancing the dosages of expanded graphite and under different concentrations, and enhancing the temperatures. The influence of brilliant red K-2BP on the decoloration ratios was bigger than the one of reactive light yellow K-4G.