Single-Stage Extraction and Separation of Co²⁺ from Ni²⁺ Using Ionic Liquid of [C₄H₉NH₃][Cyanex 272].

ABSTRACT: The purpose of this study was to optimize the extraction conditions for separating Co²⁺ from Ni²⁺ using N-butylamine phosphinate ionic liquid of [C₄H₉NH₃][Cyanex 272]. A Box-Behnken design of response surface methodology was used to analyze the effects of the initial pH, extraction time, and extraction temperature on the separation factor of Co²⁺ from sulfuric acid solution containing Ni²⁺. The concentrations of Co²⁺ and Ni²⁺ in an aqueous solution were determined using inductively coupled plasma-optical emission spectrometry. The optimized extraction conditions were as follows: an initial pH of 3.7, an extraction time of 55.8 min, and an extraction temperature of 330.4 K. The separation fact

SUBMITTER: Jing X 

PROVIDER: S-EPMC9369997 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature