Separation of nickel, copper and zinc sulfate solutions from electroplating sludge leachate using a novel synergistic solvent system of DMPY and Versatic 10

IF 4.8 2区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Hydrometallurgy Pub Date : 2025-09-05 DOI:10.1016/j.hydromet.2025.106567

Haokai Peng , Zuoying Cao , Shengxi Wu , Qinggang Li , Mingyu Wang , Xinsheng Wu , Wenjuan Guan , Guiqing Zhang

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引用次数: 0

Abstract

As the demand for Ni continues to rise, the recovery of Ni from electroplating sludge leachate has become an effective approach to alleviate supply constraints. However, the presence of impurities such as Cu, Zn, and Ca in the leachate complicates the Ni recovery process. To address these challenges, a novel pyridine group extractant, 2-((dodecylthio) methyl) pyridine (DMPY), was designed, synthesized, and evaluated for its synergistic performance with Versatic 10 (C₁₀H₂₀O₂) in selectively extracting Ni. Under optimal conditions, Ni was selectively recovered from electroplating sludge leachate including Cu, Zn, and Ca through three steps of the extraction processes. Mechanistic studies revealed that both DMPY and Versatic 10 anion coordinated with Ni²⁺, providing charge balance, forming the complex [Ni²⁺(DMPY)₂(C₁₀H₁₉O₂⁻)₂]. This synergistic solvent system significantly improved Ni extraction efficiency while minimizing reagent consumption. In conclusion, The DMPY-Versatic 10 system offers a sustainable and environmentally friendly solution, enhancing the hydrometallurgical treatment of polymetallic electroplating sludge and contributing to resource recovery and environmental protection.

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DMPY和Versatic 10协同溶剂体系分离电镀污泥渗滤液中镍、铜和硫酸锌溶液的研究

随着对镍的需求不断上升，从电镀污泥渗滤液中回收镍已成为缓解供应紧张的有效途径。然而，渗滤液中Cu、Zn和Ca等杂质的存在使Ni的回收过程变得复杂。为了解决这些问题，设计、合成了一种新型吡啶基萃取剂2-（（十二烷基硫代）甲基）吡啶（DMPY），并对其与Versatic 10 （C10H20O2）选择性萃取Ni的协同性能进行了评价。在最优条件下，从电镀污泥渗滤液中选择性回收Cu、Zn、Ca三种元素中的Ni。机理研究表明，DMPY和Versatic 10阴离子均与Ni2+配位，提供电荷平衡，形成配合物[Ni2+(DMPY)2(C₁₀H19O₂−)2]。这种协同溶剂体系显著提高了镍的萃取效率，同时最大限度地减少了试剂的消耗。综上所述，DMPY-Versatic 10系统提供了一个可持续和环保的解决方案，加强了多金属电镀污泥的湿法冶金处理，有助于资源回收和环境保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Hydrometallurgy 工程技术-冶金工程

CiteScore

9.50

自引率

6.40%

发文量

144

审稿时长

3.4 months

期刊介绍： Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.