Separation and Recovery of Copper (II), Nickel (II) from Simulated Plating Wastewater by Solvent Extraction Using Lix984

Abstract:

The process of solvent extraction was applied to separate and recover Cu²⁺ and Ni²⁺ from plating wastewater from copper and nickel alloy plating process, because there are abundant Cu²⁺ and Ni²⁺. And the influence parameters have been investigated. Lix984 was chosen as the extractant due to it has good performance to extract metals from the water. The results showed the separation of Cu²⁺ and Ni²⁺ from sulphate medium can be realized by adjusting pH value with the help of Lix984, And more, the optimal pH values for extracting Cu²⁺and Ni²⁺ are 4 and 10, respectively. The maximal extraction efficiency for Cu²⁺ and Ni²⁺ can reach above to 90.6% and 93.5% by single-stage extraction. The recovered Cu²⁺ and Ni²⁺ were stripped in 170g/L and 200g/L H₂SO₄ medium, respectively. And the stripping of Cu²⁺ and Ni²⁺ are >99.2% and >99.4%, respectively. It can be successfully applied to the field of plating wastewater, decreasing the environment pollution from Cu²⁺ and Ni²⁺ and providing a kind of new copper and nickel resource.

• Periodical: Advanced Materials Research (Volume 365)
• Pages: 252-259
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.365.252
• Online since: October 2011
• Authors: Li Qing Li, Hong Zhong
• Keywords: Cu²⁺, Lix984, Ni²⁺, Recovery, Separation, Solvent Extraction

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