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An adsorption diffusion model for removal of copper (Ⅱ) from aqueous solution by pyrolytic tyre char

机译：热解轮胎炭去除水溶液中铜（Ⅱ）的吸附扩散模型

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Kinetic and equilibrium adsorption experiments have been carried out in order to investigate the removal and diffusion mechanism of copper (Ⅱ) ions onto pyrolytic tyre char obtained from an industrial plant. The experimental equilibrium data have been analyzed using Langmuir, Freundlich, and Redlich-Peterson isotherm models. The accuracy of the fit of the isotherm models to experimental equilibrium data was assessed using the sum of squares error (SSE) analysis. Modeling of the adsorption isotherm showed that Redlich-Peterson expression yields the best fit between experimental and predicted data. The batch kinetic data obtained at different concentrations of copper ions in the solution and also different masses of tyre char were analyzed using the intraparticle diffusion model. In the intraparticle diffusion model plots, three distinct linear sections were obtained for every batch operation. An intraparticle diffusion rate parameter, k is derived from the plots of copper adsorbed vs. the square root of time. The data indicated the potential of pyrolytic tyre char for the removal of copper from aquatic effluents and the adsorption mechanism of copper ions onto tyre char can be described by intraparticle diffusion model.
机译：为了研究铜（Ⅱ）在工业化工厂生产的热解轮胎炭上的去除和扩散机理，进行了动力学和平衡吸附实验。实验平衡数据已使用Langmuir，Freundlich和Redlich-Peterson等温线模型进行了分析。使用平方误差和（SSE）分析评估了等温线模型与实验平衡数据的拟合精度。吸附等温线的模型表明，Redlich-Peterson表达在实验数据和预测数据之间产生了最佳拟合。使用粒子内扩散模型分析了在溶液中不同浓度的铜离子以及不同质量的轮胎炭时获得的批次动力学数据。在粒子内扩散模型图中，每个批处理操作均获得三个不同的线性截面。粒子内扩散速率参数k由吸附的铜与时间的平方根的关系图得出。数据表明，通过颗粒内扩散模型可以描述热解轮胎炭在水生废水中去除铜的潜力，以及铜离子在轮胎炭上的吸附机理。

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