Extraction of Copper and Cobalt from Nickel Chloride Solution with N₂₃₅

Abstract

Copper and cobalt were extracted from nickel chloride solution with N235. The various parameters considered in this work were N235concentration, reaction time, phase ratio (O/A) and pH value. The optimum conditions are determined that concentration of N235 in organic phase is 40% (volume fraction), the phase ratio (O/A) is 1:2, pH value is 2~4, chloride concentration is 5.76 mol/L and the reaction time is 4 min. Under the optimized operating conditions, cobalt and copper extracted effectively and the extraction rates at the single stage reached 90% and 97%, respectively. After five stage continuous counter-current process, the concentrations of copper, cobalt, iron in the raffinate are less than 0.0008 g/L，0.008 g/L and 0.0025 g/L, respectively, and the recovery of nickel is higher than 92%. The separation effect is steady and satisfied for the electrolysis.

Estudo eletroquímico da recuperação de metais de pilhas e de baterias descartadas após o uso

“…A composição química das soluções obtidas é mostrada na Tabela 4. A relação solução orgânica/ aquosa diferente de 1 é bastante estudada na literatura (El-Hazek et al, 2012;Zhoua et al, 2012), sendo que a eficiên-cia da reextração varia, também, com o tipo e com a concentração do ácido usado na reextração e com as propriedades de cada íon metálico a ser reextraído, além da sua concentração. No presente estudo, a relação da solução orgânica/ aquosa = 3 não aumentou o índice de reextração.…”

Discriminative ionic capabilities on hydrogen-bond transition from the mode of ordinary water to (Mg, Ca, Sr)(Cl, Br)2 hydration

“…Salt solvation is ubiquitously important to our living quality and research fields such as environmental engineering 1-2 , medicine industry 3 , food science and technology [4][5] , metallurgical engineering [6][7][8] and construction materials 9 . The solvation of a divalent salt has striking impact on the biochemistry, organic chemistry, food and medicine, and health care of human beings [10][11] , which modulate not only the surface stress and viscosity of the solutions but also changes the solution ability of biological molecules such as denature of DNA and dissolving proteins.…”

Capabilities of Anion and Cation on Hydrogen-bond Transition from the Mode of Ordinary Water to (Mg, Ca, Sr)(Cl, Br)2 Hydration

“…Salt solvation is ubiquitously important to our living quality and research fields such as environmental engineering [1][2] , medicine industry 3 , food science and technology [4][5] , metallurgical engineering [6][7][8] and construction materials 9 . The solvation of a divalent salt has striking impact on the biochemistry, organic chemistry, food and medicine, and health care of human beings [10][11] , which modulate not only the surface stress and viscosity of the solutions but also changes the solution ability of biological molecules such as denature of DNA and dissolving proteins.…”