Isotherms for the Sorption of Lead onto Peat: Comparison of Linear and Non-Linear Methods
Isotherms for the Sorption of Lead onto Peat: Comparison of Linear and Non-Linear Methods
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发表时间：
2006
影响因子：
1.8
通讯作者：
Y. Ho
中科院分区：
文献类型：
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作者：
Y. Ho
在不同温度下泥炭吸附铅离子的实验中，比较了三种广泛使用的等温线（Langmuir， Freundlich和Redlich-Peterson）的线性最小二乘法和试错非线性方法。讨论了四种Langmuir线性方程。线性方法得到的Langmuir等温线参数不同，而非线性方法得到的Langmuir等温线参数相同。Langmuir-1是最常用的线性形式，与其他Langmuir线性方程相比，它具有最高的决定系数。Redlich-Peterson等温线和Langmuir等温线产生了更高的决定系数。Freundlich等温线有两个独立的区域。结果表明，非线性方法可能是一种较好的参数获取方法。
A comparison of the linear least-squares method and a trial-and-error non-linear method of three widely used isotherms (the Langmuir, Freundlich, and Redlich-Peterson) were examined in an experiment using lead ion sorption onto peat at different temperatures. The four Langmuir linear equations are discussed. Langmuir isotherm parameters obtained from the four Langmuir linear equations using the linear method differed but they were the same when using the non-linear method. Langmuir-1 is the most popular linear form, and it had the highest coefficient of determination compared with the other Langmuir linear equations. The Redlich-Peterson and Langmuir isotherms produced higher coefficients of determination. There are two separate regions depicting the Freundlich isotherm. The results show that that non-linear method may be a better way to obtain the parameters.