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首页> 外文期刊>Journal of Applied Polymer Science >Removal of metallic ions from ethanol solutions with modified natural cotton fiber
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Removal of metallic ions from ethanol solutions with modified natural cotton fiber

机译：改性天然棉纤维从乙醇溶液中去除金属离子

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摘要

A new material of cotton fiber/Al_2O_3/SiPy ~+Cl-, COTALPy, was prepared containing on its surface the polymer silsesquioxane 3-n-propylpyridinium chloride strongly adhered. This new composite based on long fibers of natural cotton is chemically stable and had its adsorption properties studied. The COTALPy presented a maximum ionic exchange capacity of 0.85 mmol g-1 by potentiometric titulation. The adsorption isotherms of CuCl_2, ZnCl_2, CdCl_2, NiCl_2, and FeCl_2 in ethanol solutions were determined for each metal. The adsorption process was studied and data compared with the Langmuir model. The maximum adsorption capacities (in mmol g-1) were: CuCl_2 = 0.20, ZnCl2 = 0.18, CdCl2 = 0.35, NiCl_2 = 0.22, and FeCl_2 = 0.68. Real samples of fuel ethanol were eluted through a column containing the COTALPy, and it presented high-practical potential for removal of metallic ions.
机译：制备了一种棉纤维/ Al_2O_3 / SiPy〜+ Cl-的新材料COTALPy，该材料在其表面上牢固粘附了聚合物倍半硅氧烷3-n-丙基吡啶鎓氯化物。这种基于天然棉长纤维的新型复合材料具有化学稳定性，并对其吸附性能进行了研究。通过电位滴定，COTALPy的最大离子交换容量为0.85 mmol g-1。确定每种金属在乙醇溶液中CuCl_2，ZnCl_2，CdCl_2，NiCl_2和FeCl_2的吸附等温线。研究了吸附过程，并将数据与Langmuir模型进行了比较。最大吸附容量（以mmol g-1为单位）为：CuCl_2 = 0.20，ZnCl2 = 0.18，CdCl2 = 0.35，NiCl_2 = 0.22和FeCl_2 = 0.68。真实的燃料乙醇样品通过包含COTALPy的色谱柱洗脱，它具有很高的去除金属离子的实用潜力。

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