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首页> 外文期刊>African Journal of Biotechnology >Batch adsorption technique for the removal of malachite green and fast green dyes by using montmorillonite clay as adsorbent
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Batch adsorption technique for the removal of malachite green and fast green dyes by using montmorillonite clay as adsorbent

机译：用蒙脱石粘土作为吸附剂去除孔雀石绿色和快速绿色染料的批量吸附技术

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Due to the major environmental problems of colorants in the present study, the removal of malachite green and fast green dyes were studied on montmorillonite clay adsorbent under optimized conditions. The concentration of dyes, amount of adsorbent and agitation time was optimized. Spectrophotometric technique was adopted for the measurement of concentration of dyes before and after adsorption. The adsorption data were fitted on Langmuir, Freundlich and Dubinin-Radushkevich adsorption isotherm equations. The values of their corresponding constants were determined from the slope and intercepts of their respective plots. Thermodynamic parameters such as free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) of the system were also calculated by using Langmuir constant k. From the percentage (%) removal data, it was obtained that fast green-montmorillonite clay system and malachite green-montmorillonite clay system shows about 97 and 95% adsorption tendency. The scanning electron microscopy (SEM) technique was applied to study the surface morphology of the adsorbent.
机译：由于本研究中着色剂的主要环境问题，在优化条件下，研究了在蒙脱石粘土吸附剂上除去孔雀石绿和快绿色染料。优化了染料，吸附剂量和搅拌时间的浓度。采用分光光度法用于测量吸附前后染料的浓度。吸附数据安装在Langmuir，Freundlich和Dubinin-Radushkevich吸附等温线方程上。它们的相应常数的值是根据其各自图的斜率和截距确定的。还通过使用Langmuir常数k计算系统的自由能（ΔG°），焓（ΔH°），焓（ΔH°）和熵（ΔS°）的热力学参数。从百分比（％）去除数据中，获得了快速绿色蒙脱石粘土系统和孔雀石绿蒙脱石粘土系统的吸附趋势约为97和95％。扫描电子显微镜（SEM）技术应用于研究吸附剂的表面形态。

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