Abstract

Poly(vinyl alcohol)-poly[2-(4-acetylphenoxy)-2-oxoethyl-2-methylacrylate]/poly(vinyl alcohol)-cellulose composite membranes were generated, characterized and used to isolate Fe (III) and Cu (II) ions from aqueous media. The effects of pH and ion concentration on percent retention and flux were observed in the ultrafiltration of the heavy metals with a stirred ultrafiltration cell at a stirring speed of 300 rpm and a pressure of 60 psi. The maximum overall % retention of the Fe (III) ions by the membranes from the solution was observed to be 89.05% as a result of the tests. In these experiments the pH and Fe (III) concentrations were selected as 6 and 0.1 × 10⁻⁴ M respectively. The maximum overall % retention of the Cu (II) ions from the solution was observed to be 71.35% at a pH of 5 and concentration of 0.1 × 10⁻⁴ M for Cu (II) solutions.

摘要

聚(乙烯醇)-聚[2-(4-乙酰苯氧基)-2-氧乙基-2-甲基丙烯酸酯]/聚(乙烯醇)-纤维素复合膜的制备、表征并用于分离Fe(III)和Cu(II) ) 来自水介质的离子。在用搅拌超滤池以 300 rpm 的搅拌速度和 60 psi 的压力对重金属进行超滤时，观察了 pH 值和离子浓度对保留百分比和通量的影响。作为测试的结果，观察到来自溶液的膜对 Fe (III) 离子的最大总保留百分比为 89.05%。在这些实验中，pH 和 Fe (III) 浓度选择为 6 和 0.1 × 10 ^-4分别为 M。对于Cu (II) 溶液，在pH 为5 和浓度为0.1 × 10 ^-4 M 时，观察到Cu (II) 离子从溶液中的最大总保留百分比为71.35% 。