M. S. Alshammari
2021
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Quality indicators
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Abstract
Cerium has numerous applications in the high-tech industries. In addition to the rise in demand for rare earth elements (REEs) in various end-user industries, the market for cerium is growing. It is important to recover cerium from main sources such as REEs bearing ores or relevant sources such as wastewater, spent catalysts, etc., to acquire metal concentration and preserve the environment from hazard. Solvent extraction is a substantial method for the extraction of REEs and cerium over other techniques in hydrometallurgical technologies. In this review, the solvent extraction approaches for the extraction and recovery of cerium from sulfate, the factors which affect the process of extraction. The pH, extractant, metal ion concentration, temperature, organic to aqueous (O/A) ratio, extraction, and stripping kinetics have been considered to achieve optimal conditions for the recovery process. The research findings demonstrate the potential of extraction and isolation of cerium from various solutions using organophosphorus, cationic, solvating, or mixed extractants having other metallic ions.