The extraction of zinc in the presence of manganese and cadmium from chloride solution with di 2 ethyl hexyl phosphoric acid (D2EHPA) in kerosene diluent were comprehensively investigated. The extraction experiments were carried out in order to determine the influential parameters in the conditions of A:O ratio of 1:1, pH range of 1–6, temperatures of 30 °C, 40 °C and 50 °C in an aqueous solution with concentrations of 5 g/L of zinc, manganese and cadmium. The variety of influential parameters in the process such as equilibrium pH, concentration of D2EHPA, temperature, contact time, initial concentration of ions and also thermodynamic parameters of zinc extraction in chloride solution were precisely evaluated. The results showed that in the optimal condition of pH = 2.5–3, temperature 40 °C and [D2EHPA] = 10 v/v, the extraction of Zn, Mn and Cd were 97%, 14% and 3% respectively. ΔpH_0.5^Zn-Mn and ΔpH_0.5^Zn-Cd in this condition respectively equal to 2.5 and more than 5.25. Also, the study indicated that the predominant zinc species extracted by D2EHPA was ZnCl⁺. Based on thermodynamic studies, the values of ΔH^o, ΔS^o and ΔG^o for zinc extraction in condition of temperature 40 °C and [D2EHPA] = 10 v/v are 25.65 kJ.mol⁻¹, 79.20 J·K⁻¹·mol⁻¹ and 0.86 kJ·mol⁻¹ respectively. Furthermore, the results showed that under constant concentration of D2EHPA, changes in the initial concentrations of Zn, Mn and Cd in the chloride solution were most effective in their separation.

全面研究了在煤油稀释液中用二乙基己基磷酸（D2EHPA）从氯化物溶液中萃取锰和镉中的锌的方法。进行萃取实验是为了确定在水溶液中A：O比为1：1，pH范围为1-6，温度为30°C，40°C和50°C的条件下的影响参数锌，锰和镉的浓度为5 g / L。精确评估了过程中的各种影响参数，例如平衡pH，D2EHPA的浓度，温度，接触时间，离子的初始浓度以及氯化物溶液中锌萃取的热力学参数。结果表明，在pH = 2.5–3，温度为40°C和[D2EHPA] = 10 v / v的最佳条件下，Zn的提取，Mn和Cd分别为97％，14％和3％。pH值_0.5^锌锰和ΔpH _0.5^锌镉在此条件下分别等于2.5和大于5.25。此外，研究表明，D2EHPA提取的主要锌种类为ZnCl ⁺。基于热力学的研究中，ΔH的值^Ó，ΔS ^ö和ΔG ^ø锌提取在温度40的条件℃，〔D2EHPA] = 10体积/体积是25.65 kJ.mol ^-1，79.20Ĵ·K ^-1 · mol ^-1和0.86 kJ·mol ^-1分别。此外，结果表明，在恒定浓度的D2EHPA下，氯化物溶液中Zn，Mn和Cd初始浓度的变化最有效地分离了它们。