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By Asmaa Saeed Mohamed Amal Mohamed hussien Esraa Zakria Kamel

Alexandria University Faculty of Engineering. By Asmaa Saeed Mohamed Amal Mohamed hussien Esraa Zakria Kamel.

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By Asmaa Saeed Mohamed Amal Mohamed hussien Esraa Zakria Kamel

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  1. Alexandria University Faculty of Engineering By AsmaaSaeed Mohamed Amal Mohamed hussien EsraaZakriaKamel

  2. Liquid-liquid Extraction is a mass transfer operation (Diffusion Controlled Operations) in which the feed is contacted with an immiscible or partially immiscible solvent that exhibits preferential affinity towards one or more of the components in the feed (called the solute).

  3. Extract Feed LLE Process Solvent Raffinate • the feed is called the raffinate stream after it begins to lose the solute. • the solvent is called the extract stream when it leaves the contactor. A sketch of the basic process

  4. Agitated column. • Rotating shaft. • Rotating disc. • Stator ring. • Liquid distributor. • Variable speed motor. • Light phase storage tank. • Heavy phase storage tank. • Centrifugal pump. • Control valve.

  5. The volumetric mass transfer coefficient (K` = KA) of the extraction of copper sulphate from water with naphthenic acid in a recirculating batch rotating disc contactor was obtained using the equation: which upon integration yields: K` is determined by plotting vs. t. K` (cm3/sec) is used instead of K (cm/sec) as the interfacial mass transfer area between the two phases could not be calculated.

  6. the volumetric mass transfer coefficient for rotation disc contactor decreasing with decreasing with increasing concentration of copper sulphate. • the volumetric mass transfer coefficient of rotation disc extractor increasing with increase of : 1- the disc rotational speed. 2- degree of disc roughness. 3- the concentration of naphthenic acid.

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