The purpose of this work is to study the desalination of brackish water using a new ion exchange membrane, made from sulfochlorated polyethersulfone (Cl‐PES), and crosslinked using aminated polyethersulfone (NH2‐PES) as a crosslinking reagent. This membrane, named ClNH2 membrane, has been obtained by reaction between Cl‐PES with 1.3 SO₂Cl groups per monomer unit and 0.2 equivalent amount of NH2‐PES. ClNH2 membrane has been characterized in terms of contact angle, transport number, intrinsic conductivity, and water uptake (as a function of temperature). Electrodialysis performances of the newly synthetized membranes have been measured using an electrodialysis cell at a laboratory scale and compared to commercial membranes. All the experiments have been performed using synthetic brackish water solutions prepared from sodium chloride salts with different concentrations (varying from 0.5 to 5.0 g/L). The concentration of different water samples obtained has been found to be below the amount recommended by the World Health Organization (WHO) for drinking water.

中文翻译：

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磺化氯化聚醚砜衍生的新型离子交换膜用于微咸水电渗析脱盐

这项工作的目的是研究使用新的离子交换膜对微咸水进行脱盐的方法，该膜由磺化氯化聚醚砜（Cl-PES）制成，并使用胺化聚醚砜（NH2-PES）作为交联剂进行交联。该膜名为ClNH2膜，是通过Cl-PES与1.3 SO ₂之间的反应获得的每个单体单元含Cl基团和0.2当量的NH2-PES。ClNH 2膜已根据接触角，传输数，固有电导率和吸水率（随温度变化）进行了表征。已经使用电渗析池在实验室规模上测量了新合成膜的电渗析性能，并将其与市售膜进行了比较。所有实验均使用由不同浓度（0.5至5.0 g / L）的氯化钠盐制得的微咸水溶液进行。发现获得的不同水样的浓度低于世界卫生组织（WHO）推荐的饮用水量。