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首页> 外文期刊>Leonardo Electronic Journal of Practices and Technologies >Isotherm, kinetics and thermodynamics of phenol adsorption onto rice husk activated carbon
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Isotherm, kinetics and thermodynamics of phenol adsorption onto rice husk activated carbon

机译：稻壳活性炭吸附苯酚的等温，动力学和热力学

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This research was aimed at the study of isotherm, kinetics and thermodynamics of phenol adsorption onto rice husk activated carbon. The rice husk activated carbon was produced by carbonization followed by activation with phosphoric acid and batch experiment was conducted to obtain the relevant experimental data for analysis. Langmuir and Freundlich models were employed for the isotherm analysis while pseudo-second order rate equation was used for the kinetics study in addition to the thermodynamic model analysis. The adsorption process was found to be inconsistent with the assumption of Langmuir monolayer but conformed to Freundlich assumption of multilayer and physical adsorption. The experimental data followed pseudo-second order kinetic model and the adsorption process was found to be exothermic, feasible and better favoured at lower temperatures .
机译：这项研究的目的是研究稻壳活性炭吸附苯酚的等温线，动力学和热力学。炭化法制得稻壳活性炭，然后用磷酸进行活化，并进行分批实验，以获得相关的实验数据进行分析。等温线分析采用Langmuir和Freundlich模型，而热力学模型分析则采用伪二级速率方程进行动力学研究。发现吸附过程与Langmuir单层的假设不一致，但与Freundlich多层和物理吸附的假设一致。实验数据遵循伪二级动力学模型，并且发现吸附过程是放热的，可行的并且在较低温度下更有利。

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