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首页> 外文期刊>Separation and Purification Technology >Removal of salts and dyes by low ZnAl_2O_4-TiO_2 ultrafiltration membrane deposited on support made from raw clay
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Removal of salts and dyes by low ZnAl_2O_4-TiO_2 ultrafiltration membrane deposited on support made from raw clay

机译：低ZnAl_2O_4-TiO_2超滤膜沉积在生黏土制成的载体上去除盐和染料

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摘要

This paper reports the dynamic characterizations of a ZnAl_2O_4-TiO_2 membrane deposited on a macroporous support prepared from Moroccan clay coated with a zirconia microfiltration interlayer.The water permeability of the membrane is 0.26 x 10~(-10)ms~(-1) Pa~(-1),its thickness is less than 700 nm with an average pore diameter of 5 nm,and a cut off about 4500 Da.The investigations of filtrations performed with different salts (NaCl,CaCl_2,Na_2SO_4,CaSO_4) prove the rejection mechanism is governed by a Donnan exclusion of the coion.Results obtained with solutions charged in heavy metal ions such as Cr~(III) and synthetic dyes are very promising to consider the use of this membrane in depolluting filtration processes.
机译：本文报道了用多孔氧化锆微滤夹层涂覆的摩洛哥粘土制备的大孔载体上沉积的ZnAl_2O_4-TiO_2膜的动态特性，该膜的透水性为0.26 x 10〜（-10）ms〜（-1）Pa 〜（-1），其厚度小于700 nm，平均孔径为5 nm，截留值约为4500 Da。用不同盐（NaCl，CaCl_2，Na_2SO_4，CaSO_4）进行的过滤研究表明用重金属离子（如Cr〜（III））和合成染料中的溶液获得的结果非常有希望考虑将该膜用于除污过滤过程。

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