In many industrial fields such as chemical processing, pharmaceuticals, environmental protection, and hydrometallurgy, liquid liquid extraction is a core technology for separation and purification.

***Countercurrent extraction Countercurrent extraction is a process that utilizes repeated liquid-liquid extractions to separate substances with varying solubility between two immiscible phases. It ...

Abstract: The identification problem of rare earth extraction process, which is based on local linear weighted state-space models, is considered in this paper. The ...

Abstract: In this paper, the identification problem of linear state-space models is considered for the rare earth extraction process. The parameter is determined by ...