In the presented studies, extractant N′-(2-ethylhexyloxy)pyridine-4-carboximidamide (EH4IA), and its quaternary salts (4-[1-amine(2-ethylhexyloxyimine)]-1-propylpyridinium chloride (EH4IA-Cl) and 4-[1-amine(2-ethylhexyloxyimine)]-1-propylpyridinium bromide (EH4IA-Br)) were tested as the selective extractants of Zn(II) from waste pickling liquor, as well as after encapsulation, as sorbents enabling separation of Fe(II) and (III), Zn(II), and Pb(II). In the extraction study various factors affecting zinc(II) extraction, and its separation from Fe(II), such as NaCl, HCl, and the metals ions concentration in the aqueous feed solution, as well as structure and concentration of the extractant were analyzed. The metals sorption with the encapsulated extractants was found to be affected by the structure of the encapsulated ionic liquid, pH of the aqueous phase, shaking time, concentration of the metals ions, NaCl, HCl, and temperature of the process. The obtained results enabled to propose the scheme of waste pickling liquor treatment, and laboratory tests confirmed very high potential of the method and the selected to extraction and sorption stages extractant - EH4IA-Br.

在提出的研究中，萃取剂N′-（2-乙基己氧基）吡啶-4-羧酰亚胺（EH4IA）及其季盐（4- [1-胺（2-乙基己氧基亚胺）]-1-丙基吡啶鎓氯化物（EH4IA-Cl）和4- [1-胺（2-乙基己氧基氧亚胺）]-1-丙基溴化溴化铵（EH4IA-Br））作为废酸洗液中Zn（II）的选择性萃取剂，以及在包封后作为能够分离Fe（II）和（ III），Zn（II）和Pb（II）。在萃取研究中，分析了影响锌（II）萃取及其与铁（II）分离的各种因素，例如NaCl，HCl和进料水溶液中金属离子的浓度，以及萃取剂的结构和浓度。发现包封的萃取剂对金属的吸附受包封的离子液体的结构，水相的pH值，振荡时间，金属离子的浓度，NaCl，HCl和过程温度。获得的结果能够提出一种废酸洗液处理的方案，实验室测试证实了该方法的巨大潜力，并选择了用于萃取和吸附阶段的萃取剂-EH4IA-Br。