摘要
Removal of nitrophenols （NPs） from aqueous solutions through the adsorption process by using cationic β-cyclodextrin （CCD） modified zeolite （CCDMZ） was investigated. The effects of particle size, contact time, solution pH values and sodium chloride content in the aqueous on adsorption capacity were evaluated through a series of batch experiments. The results showed that CCDMZ had a higher adsorption capacity for removing NPs at a size fraction of 0.45-0.9 mm while adsorption of NPs on CCDMZ reached equilibrium within 60 min. The adsorption process was apparently influenced by pH values and sodium chloride content in aqueous solution. To ascertain the mechanisms of sorption, the experimental data were modeled by using the pseudo-first and pseudo-second order kinetic equations, and the results indicated that the adsorption kinetics of NPs on CCDMZ well-matched with the pseudo-second order rate expression.
从通过由使用 cationic -cyclodextrin (电荷耦合器件) 的吸附过程的水的答案的 nitrophenols (NP ) 的移动修改了沸石(CCDMZ ) 被调查。粒子尺寸，接触时间，解决方案 pH 值和钠氯化物的效果满足在在吸附能力上水通过一系列批实验被评估。当 CCDMZ 上的 NP 的吸附在 60 min 以内到达了平衡时，结果证明 CCDMZ 为在 0.450.9 公里的尺寸部分移开 NP 有一个更高的吸附能力。吸附进程被 pH 值和钠氯化物内容显然在水的答案影响。查明吸着的机制，试验性的数据被使用伪 first 和伪秒顺序建模运动方程，和结果显示有伪秒顺序的 CCDMZ 搭配得不错上的 NP 的吸附动力学评价表示。
基金
Supported by the National Natural Science Foundation of China （NEPCP 200809098） and the Natural Science Foundation ot Gansu Province （0803RJZA003）.
