SDS改性沸石对碱性品红的吸附性能研究

通过静态实验探讨了表面活性剂十二烷基硫酸钠（SDS）改性沸石吸附碱性品红的影响因素。实验结果表明在投入量为8 g/L、吸附时间为45 min、p H值为6、温度为25℃时,对初始质量浓度100 mg/L碱性品红溶液的去除率可达到96.16%,吸附量为12.02 mg/g;SDS改性沸石吸附碱性品红的吸附性能符合Langmuir型吸附等温线和一级反应动力学模型的特征;热力学分析结果表明,吸附符合自发吸热过程。

Study on Adsorption of Basic Fuchsin on SDS Modified Zeolites

The adsorption of basic fuchsin with sodium dodecyl sulfate（SDS） modified zeolites was investigated through batch experiments. The experimental results indicated that in the conditions of the dosage was 8 g/L, adsorption time was 45 min, p H at 6.0, the temperature was 25℃, the initial concentration of basic fuchsin was 100 mg/L, SDS modified zeolites removal of basic fuchsin rate could reach 96.16% and the adsorption capacity was 12.02 mg/g. Langmuir isotherm and the first-order model was better to fit the adsorption characteristics of basic fuchsin onto modified zeolites. The thermodynamic parameters suggested that the adsorption of basic fuchsin on modified zeolites was spontaneous and endothermic in nature.