【摘要】 将壳聚糖与膨润土复合制得一种固体吸附剂(CCB),并用于水溶液中苯酚的吸附。详细研究了吸附体系中溶液pH值、苯酚起始浓度对吸附的影响,将吸附平衡数据用Langmuir和Freundlich方程进行对比分析。结果表明:温度为25℃的条件下,溶液pH值为4.0时,吸附容量最大,达到63.69 mg/g;吸附量随苯酚起始浓度的增大而增大,吸附过程符合Langmuir和Freundlich模型,其中Langmuir模型更为适合。更多还原

【Abstract】 A kind of solid absorber was made by coating chitosan(CCB) on the surface of bentonite,and the adsorption of phenol from aqueous solution by CCB was also studied.The adsorption parameter,such as the initial pH value,concentration of phenol and temperature,was detailed investigated.Results showed that the highest adsorption reached(63.69 mg/g) at pH 4.0 and 25℃,increasing with the higher concentration of phenol.Adsorption data was described both by the Langmuir model and Freundliche quation,and the Langmuir model was found with the well agreement.更多还原