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首页> 外文期刊>The Journal of the Textile Institute >Adsorption of cationic dye textile wastewater using Clinoptilolite: isotherm and kinetic study
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Adsorption of cationic dye textile wastewater using Clinoptilolite: isotherm and kinetic study

机译：斜发沸石对阳离子染料纺织废水的吸附：等温线和动力学研究

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摘要

The releasing of dye-contained effluents has become an objectionable problem in these decades. Thus, the aim of the present work was to evaluate the potential of the acid-treated Clinoptilolite for Methylene Blue (MB) dye removal from aqueous solution. In this experimental-lab study, the dye adsorption onto acid-treated Clinoptilolite was carried out in batch adsorption system. Brunauer-Emmet-Teller (BET) analysis, Scanning Electron Microscopy (SEM), XRF analysis and X-ray diffraction (XRD) were utilized to characterize the acid-treated Clinoptilolite. The effect of some parameters on adsorption efficiency including pH, adsorbent dosage, initial dye concentration and contact time were studied. The isotherm and kinetic study were applied to describe the data obtained from the dye adsorption process. The results indicated that increasing the studied parameters had direct and positive effect on the dye adsorption efficiency. The results showed that higher dye adsorption efficiency was observed at pH=10, adsorbent dosage of 0.5 g/L, dye concentration of 50 mg/L and contact time of 90 min. the isotherm and kinetic studies are better described by pseudo-second kinetic model and Langmuir isotherm model. It can be concluded that acid-treated Clinoptilolite can be used as an effective adsorbent to remove the MB dye from aqueous solution.
机译：在过去的几十年中，含染料废水的释放已成为令人讨厌的问题。因此，本发明的目的是评估酸处理的斜发沸石对于从水溶液中去除亚甲基蓝（MB）染料的潜力。在该实验实验室研究中，染料以分批吸附系统吸附在酸处理的斜发沸石上。利用Brunauer-Emmet-Teller（BET）分析，扫描电子显微镜（SEM），XRF分析和X射线衍射（XRD）来表征酸处理过的斜发沸石。研究了pH，吸附剂用量，初始染料浓度和接触时间等参数对吸附效率的影响。等温线和动力学研究用于描述从染料吸附过程获得的数据。结果表明，增加研究参数对染料的吸附效率具有直接和积极的影响。结果表明，在pH = 10，吸附剂量为0.5 g / L，染料浓度为50 mg / L，接触时间为90 min的条件下，染料的吸附效率更高。等温动力学模型和Langmuir等温模型可以更好地描述等温线和动力学。可以得出结论，酸处理的斜发沸石可以用作从水溶液中去除MB染料的有效吸附剂。

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