This study investigates the most suitable conditions for the combined separation of nickel and zinc ions from aqueous solution using triethylenetetramine (Trien) as a neutral organic chelating ligand and sodium dodecyl sulfate (SDS) as an anionic collector for ion flotation. The interaction of nickel ions with Trien at various pHs and Trien concentrations, and that of nickel ions with SDS, are studied spectrophotometrically. The results show that most suitable conditions for ion flotation are a pH of 9.7, a Trien/Ni(II) mole ratio of 2 and an SDS/Ni(II) mole ratio of 2. Flotation results for the nickel–zinc–SDS-Trien solution show that nickel ion removal is higher than that for zinc ions, indicating that the order of ion removal is opposite to the order of increasing crystal ionic radius. The stability constant of the nickel-Trien complex is greater than that for the zinc-Trien complex, leading to higher Trien interactions with nickel ions. At a pH of 9, the removal of nickel and zinc ions reaches a maximum of 88.4 and 79.9% respectively, corresponding to a 9% higher removal of nickel ions compared to zinc ions.

这项研究研究了使用三亚乙基四胺（Trien）作为中性有机螯合配体和十二烷基硫酸钠（SDS）作为阴离子浮选剂的阴离子收集剂，从水溶液中分离分离镍和锌离子的最合适条件。分光光度法研究了镍离子与Trien在各种pH和Trien浓度下的相互作用以及镍离子与SDS的相互作用。结果表明，最适合离子浮选的条件是pH值为9.7，Trien / Ni（II）摩尔比为2和SDS / Ni（II）摩尔比为2。 Trien溶液显示镍离子的去除率高于锌离子，这表明离子去除的顺序与晶体离子半径的增大相反。镍-Trien配合物的稳定性常数大于锌-Trien配合物的稳定性常数，导致与镍离子的Trien相互作用更高。在pH值为9时，镍和锌离子的去除率分别达到88.4％和79.9％的最大值，与镍离子相比，锌离子的去除率高出9％。