Abstract Zinc and iron were separated from the spent pickling solution by extraction with methyl trioctyl ammonium chloride (Aliquat 336). The purpose of the extraction experiment is to determine a variety of parameters (e.g. addition of octanol, contact time, phase ratio, [H+] concentration and Aliquat 336 concentration). Under optimal extraction conditions, the zinc extraction in one stage was above 92.4% and the separation coefficient βZn/Fe could reach 273 with initial zinc concentration 17.6 g/L, iron concentration 141.1 g/L and [H+] = 1.4 M. The zinc extraction mechanism was analyzed FT-IR spectroscopy and slope method. Zn(II) after extracting was comparative studied using different stripping agents. Recycling tests were also carried out, indicating that the extractant had a stable extraction performance, retaining 91.2% extraction efficiency of fresh extractant after 5 cycles.

中文翻译：

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用Aliquat 336从废酸洗液中提取锌的研究

摘要 用甲基三辛基氯化铵 (Aliquat 336) 萃取废酸洗液中的锌和铁。萃取实验的目的是确定各种参数（例如，辛醇的添加量、接触时间、相比、[H+] 浓度和 Aliquat 336 浓度）。在最佳提取条件下，一级锌提取率在92.4%以上，分离系数βZn/Fe可达273，初始锌浓度17.6 g/L，铁浓度141.1 g/L，[H+] = 1.4 M。提取机理采用FT-IR光谱法和斜率法进行分析。使用不同的剥离剂对萃取后的 Zn(II) 进行比较研究。还进行了回收试验，表明萃取剂萃取性能稳定，保留91。