Moulahcene Lamia, Skiba Mohamed, Milon Nicolas, Fadila Hammache, Bounoure Frédéric, Lahiani-Skiba Malika
Galenic Pharmaceutical Laboratory, Normandie University, UNIROUEN, NorDICInserm U1239, UFR Medicine and Pharmacy, Rouen University, 22 Bd Gambetta, F-76183 Rouen, France.
Laboratory of Membrane Processes and of Separation and Recovery Techniques, Faculty of Technology, Abderrahmane-Mira University, Route de Targua Ouzemmour, Bejaia DZ-06000, Algeria.
Polymers (Basel). 2023 Jan 31;15(3):732. doi: 10.3390/polym15030732.
A batch system was applied to study the adsorption of three dyes (methyl violet, eriochrom black T and helianthin) from aqueous solution onto β-cyclodextrin polymer, synthesized by using citric acid as a cross linking agent. This polymer lets to adsorb only methyl violet for this effect, several operator variables was checked only with this kind of dye, the removal efficiently increases with increase in adsorbent amount; elevation of temperature lets also to improve the dye adsorption; ionic strength has not effect on dye adsorption process, for the pH we have remarked a slight decrease in removal efficiently with increasing of pH values. Equilibrium study was investigated by applying three models (Langumir, Frendlich and Temkin), results show that Langumir isotherm is the appropriate model. FTIR spectra show the complex inclusion formation which dominates the adsorption mechanism, confirmed by the absence of characteristic peaks of methyl violet in ß-cyclodextrin after adsorption.
采用间歇式系统研究了以柠檬酸为交联剂合成的β-环糊精聚合物对水溶液中三种染料（甲基紫、铬黑T和向日葵色素）的吸附作用。由于这种聚合物仅能吸附甲基紫，因此仅针对这类染料考察了几个操作变量，去除效率随吸附剂用量的增加而提高；温度升高也能改善染料的吸附效果；离子强度对染料吸附过程没有影响，对于pH值，我们注意到随着pH值的升高，去除效率略有下降。通过应用三种模型（Langumir、Frendlich和Temkin）进行了平衡研究，结果表明Langumir等温线是合适的模型。傅里叶变换红外光谱（FTIR）显示了主导吸附机制的络合包合物的形成，吸附后β-环糊精中甲基紫特征峰的消失证实了这一点。
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