In this article, we report the efficient removal of arsenic in the form of arsenite (As(III)) from an aqueous solution which was applied on the industrial effluents. A flat-sheet polypropylene-supported liquid membrane (SLM) was clamped between the feed phase and strip phase in a liquid membrane permeator setup using tridodecylamine (TDDA) as carrier for extraction of As(III). We have optimized the reaction in changing different parameters such as metal, acid concentration in feed phase, strip phase concentration, and carrier concentration for the maximum As(III) transport through the SLM. The flux value, time of extraction, the stoichiometry of the complex formed, and membrane stability were also investigated. As a result of different experiments performed, we find the best conditions of 0.1 mol/L of TDDA, 1.0 mol/L of HCl in feed phase at optimum pH 1, and 1.0 mol/L of NaOH in stripping phase for the maximum As(III) removal. The optimized reaction was utilized on effluent collected from different industries. During repeated set of experiments on a single polypropylene membrane, it was found that it could withstand five consecutive experiments. Moreover, as high as 93% of extraction efficiency was achieved in 180 min.

中文翻译：

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用十二烷基胺负载的液膜去除工业废水中砷的实验研究。

在本文中，我们报告了从应用于工业废水的水溶液中有效去除砷形式的砷（As（III））。在使用三十二烷基胺（TDDA）作为载体提取As（III）的液膜渗透器装置中，将平板聚丙烯支撑的液膜（SLM）夹在进料相和汽提相之间。我们通过改变不同的参数（例如金属，进料相中的酸浓度，汽提相浓度和载流子浓度）优化了反应，以使最大的As（III）通过SLM传输。还研究了通量值，萃取时间，形成的配合物的化学计量和膜稳定性。由于进行了不同的实验，我们找到了TDDA 0.1 mol / L的最佳条件1。进料阶段的HCl在最佳pH 1下为0 mol / L，汽提阶段的NaOH为1.0 mol / L，以最大程度地去除As（III）。优化的反应用于从不同行业收集的废水。在单个聚丙烯膜上重复进行一组实验时，发现它可以承受五个连续的实验。此外，在180分钟内可实现高达93％的提取效率。