| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| 硫代水杨酸 | Thiosalicylic acid | 147-93-3 | C7H6O2S | 154.189 |
A solution of 2-(octylsulphanyl)benzoic acid in 1,2-dichloroethane was used as a liquid membrane for selective pertraction of Pb2+ cations. Transport processes were carried out in a multi-membrane hybrid system (MHS) consisting of two cation-exchange membranes (CEM) and a flowing liquid membrane (FLM) in the following order: CEM | FLM | CEM. The liquid membrane phase was dehydrated continuously using a pervaporation method (PV). The system was capable of transporting Pb2+ ions selectively from a multi-cation aqueous solution composed of Na+, K+, Ca2+, Mg2+, and Pb2+ nitrates. A comparative study of the carrier efficiency under various feed pH conditions was performed. It was found that the carrier exhibited sufficient selectivity and transport efficiency under a broad range of operational conditions, with a maximum transport rate of Pb2+ ions attaining the value of (1.09 ± 0.03) × 10−10 mol cm−2 s−1 and the selectivity coefficient of up to 40.
在1,2-二氯乙烷中使用2-(辛基硫基)苯甲酸的溶液作为选择性膜透析Pb2+阳离子的液体膜。运输过程在一个由两个阳离子交换膜(CEM)和一个流动液体膜(FLM)组成的多膜混合系统(MHS)中进行,顺序为:CEM | FLM | CEM。液体膜相通过渗透蒸发法(PV)持续脱水。该系统能够从由Na+、K+、Ca2+、Mg2+和Pb2+硝酸盐组成的多阳离子水溶液中选择性地运输Pb2+离子。在不同的进料pH条件下进行了载体效率的比较研究。发现在广泛的操作条件下,载体表现出足够的选择性和运输效率,Pb2+离子的最大传输速率达到(1.09 ± 0.03)× 10−10 mol cm−2 s−1,选择性系数高达40。