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SOLVENT EXTRACTION

SOLVENT EXTRACTIONC ontent Introduction Principle of SOLVENT EXTRACTION Distribution coefficient Distribution ratio Relation between Distribution coefficient and distribution ratio Factors affecting SOLVENT EXTRACTION , separation factor Batch EXTRACTION Countercurrent EXTRACTION Application of SOLVENT EXTRACTION Numerical problems Solventextraction,alsocalledliquid-liqui dextraction(LLE)andpartitioning Solventextractionistheprocessinwhichacom poundtransfersfromonesolventtoanotherowi ngtothedifferenceinsolubilityordistribut ioncoefficientbetweenthesetwoimmiscible( orslightlysoluble)solvents. Itisamethodofquantitativeseparationofcom pounds. Whenextractingsolventisstirredwithsoluti oncontainingsolutethensolutefromoriginal solventgetstransferredintoanextractingso lvent.

•Such chelates are usually water soluble •The chelating agents are usually bidentate or multidentate organic ligands which provide hydrophobic pocket to the metal ion. •The organic part of such ligands strongly interact with organic solvent and thereby meta-chelate become soluble into organic phase.

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