State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, China; College of Ecology and E nvironment, Chengdu University of Technology, Chengdu, 610059, China.
State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu, 610059, China; College of Ecology and E nvironment, Chengdu University of Technology, Chengdu, 610059, China.
J Environ Manage. 2023 Mar 1;329:117104. doi: 10.1016/j.jenvman.2022.117104. Epub 2023 Jan 3.
The quantitative description of the equilibrium data by the isotherm models is an indispensable link in adsorption studies. The previous review papers focus on the underlying assumptions, fitting methods, error functions and practical applications of the isotherm models, usually ignoring their curve characteristics, selection criteria and common controversies. The main contents of this review include: (i) effect of the model parameters on the isotherm curves; (ii) determination of the site energy distribution; (iii) selection criteria of the isotherm models; and (iv) elimination of some common controversies. It is of great significance to reveal the curve characteristics for selecting a proper isotherm model. The site energy distribution is conducive to understanding the physicochemical properties of the adsorbent surface. The complete isotherm is recommended to be correlated with the experimental data. The model parameter q should be cautiously adopted for comparison of the adsorbent performance. The residual plot can be used to diagnose the fitting quality of the isotherm models further. This review also addresses some common mistakes and controversies and thereby avoids their propagation in future publications.
用等温线模型对平衡数据进行定量描述是吸附研究中不可或缺的一环。之前的综述论文主要关注等温线模型的基本假设、拟合方法、误差函数和实际应用，通常忽略了它们的曲线特征、选择标准和常见争议。本综述的主要内容包括：（i）模型参数对等温线曲线的影响；（ii）确定位能分布；（iii）等温线模型的选择标准；以及（iv）消除一些常见的争议。揭示曲线特征对于选择合适的等温线模型具有重要意义。位能分布有助于了解吸附剂表面的物理化学性质。推荐用完整的等温线来关联实验数据。模型参数 q 应谨慎采用以比较吸附剂的性能。残差图可进一步用于诊断等温线模型的拟合质量。本综述还解决了一些常见的错误和争议，从而避免了它们在未来出版物中的传播。
