《Table 2 Adsorption isotherm parameters for Cd2+adsorption on MCM-41》

  提示：宽带有限、当前游客访问压缩模式

本系列图表出处文件名：随高清版一同展现

《低成本制备MCM-41介孔分子筛及其对镉离子的吸附性能（英文）》

1. 获取 高清版本忘记账户？点击这里登录

1. 下载图表忘记账户？点击这里登录

For isotherm studies，50 m L of Cd2+solutions at different concentrations（20，30，60，80，and 100 mg/L）was equilibrated for 120 min with 130 mg MCM-41 at25°C.Fig.10 shows the experimental data and Langmuir-Freundlich isotherms for Cd2+adsorption onto MCM-41.Table 2 lists the calculated values from the Langmuir and Freundlich isothermal adsorption parameters for Cd2+adsorption.The fit of a model to the experimental data is usually evaluated by linear regression analysis，where the R2 value is used as an indication for the goodness of fit.From Table 2，it can be seen that the Freundlich adsorption model was more suitable than the Langmuir model because of the higher correlation coefficients.Also，the n values of the Freundlich model for Cd2+ions were calculated in the range of 1–10（Table 2），suggesting that the adsorption was favorable.In addition，the 1/n value was found to be less than unity（0.381），which suggests a chemisorption process[18].