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Developing the new kinetics model based on the adsorption process: From fitting to comparison and prediction.
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-04-06 , DOI: 10.1016/j.scitotenv.2020.138490 Dexin Fang 1 , Xianquan Zhuang 2 , Liping Huang 3 , Qian Zhang 3 , Qiushi Shen 3 , Lei Jiang 3 , Xiaoyi Xu 4 , Fangying Ji 1
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-04-06 , DOI: 10.1016/j.scitotenv.2020.138490 Dexin Fang 1 , Xianquan Zhuang 2 , Liping Huang 3 , Qian Zhang 3 , Qiushi Shen 3 , Lei Jiang 3 , Xiaoyi Xu 4 , Fangying Ji 1
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In this study, an intrinsic kinetics model was proposed to simulate the adsorption process. The kinetics model was established based on the collision theory, where the available adsorption site and residual adsorbate concentration were considered. The model specifically highlights the significance of initial conditions in its equation. The initial reaction condition is expressed by the model parameter ξ, which includes four factors: concentration, volume, adsorbent dosage and adsorption capacity. The applicability of this model was mainly explored with the phosphate adsorption process by layered double hydroxides (LDH). Experimental results indicate that, at a certain initial condition, the intrinsic kinetics rate coefficient exhibits a superior stability, making the adsorption rate become comparable among different materials. On this basis, the kinetics rate coefficients of 60 materials were compared, and the LDH was proved to be advantageous in phosphate removal rate. Additionally, the intrinsic kinetics model was successfully applied to predict the phosphate adsorption kinetics under a wide range of initial conditions. The predicted concentration throughout the entire adsorption process is well consistent with the evolution of experimental data. This model is an effort to advance the kinetics analysis from fitting to comparison and prediction.
中文翻译：
根据吸附过程开发新的动力学模型：从拟合到比较和预测。
在这项研究中，提出了一个内在动力学模型来模拟吸附过程。基于碰撞理论建立了动力学模型，其中考虑了可用的吸附位点和残留的吸附物浓度。该模型特别强调了方程中初始条件的重要性。初始反应条件由模型参数ξ表示，该参数包括四个因素：浓度，体积，吸附剂用量和吸附容量。该模型的适用性主要是通过层状双氢氧化物（LDH）的磷酸盐吸附过程来探讨的。实验结果表明，在一定的初始条件下，内在动力学速率系数具有较好的稳定性，使吸附速率在不同材料之间具有可比性。在此基础上，比较了60种物料的动力学速率系数，证明了LDH对磷的去除率有利。此外，内在动力学模型已成功应用于预测各种初始条件下的磷酸盐吸附动力学。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型是努力将动力学分析从拟合到比较和预测的过程。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型是努力将动力学分析从拟合到比较和预测的过程。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型旨在推动动力学分析从拟合到比较和预测。
更新日期：2020-04-06
中文翻译：
根据吸附过程开发新的动力学模型：从拟合到比较和预测。
在这项研究中，提出了一个内在动力学模型来模拟吸附过程。基于碰撞理论建立了动力学模型，其中考虑了可用的吸附位点和残留的吸附物浓度。该模型特别强调了方程中初始条件的重要性。初始反应条件由模型参数ξ表示，该参数包括四个因素：浓度，体积，吸附剂用量和吸附容量。该模型的适用性主要是通过层状双氢氧化物（LDH）的磷酸盐吸附过程来探讨的。实验结果表明，在一定的初始条件下，内在动力学速率系数具有较好的稳定性，使吸附速率在不同材料之间具有可比性。在此基础上，比较了60种物料的动力学速率系数，证明了LDH对磷的去除率有利。此外，内在动力学模型已成功应用于预测各种初始条件下的磷酸盐吸附动力学。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型是努力将动力学分析从拟合到比较和预测的过程。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型是努力将动力学分析从拟合到比较和预测的过程。在整个吸附过程中预测的浓度与实验数据的演变完全一致。该模型旨在推动动力学分析从拟合到比较和预测。
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