Copper Liquid-Liquid Extraction

  SPECIFICATIONS:   The copper liquid-liquid extraction experiment (seen on the left), showing the copper and LIX + kerosine feed tanks, roller pumps with speed controllers, mixer-settler, variable speed stirrer, and raffinate and extract sample collection.  The aqueous raffinate phase is analyzed for copper by a spectrophotometer.

Packed-Bed NH3 (or CO2) Absorber

Catalytic Hydrolysis of Ethyl Acetate

Power Consumption & Mixing Efficiency in Agitation

Membrane Air Separation

Copper Liquid-Liquid Extraction

Flash Vaporizer Dynamics and Control

Dye Mixer Dynamics and Control

Pump Characteristics Experiment

Wind Power Experiment

Hydrogen peroxide/sodium thiosulfate batch kinetics

  DETAILED OVERVIEW:   In this experiment one 20 liter polyethylene tank holds a copper sulfate solution at a level of five grams of copper per liter, and a second 20 liter tank holds a solution of LIX in kerosine.  LIX is a mixed oxime that reversibly binds copper.  Each tank feeds a variable speed roller pump, and the pump outputs are combined and sent to a small glass mixer vessel equipped with a variable speed stirrer.  The mixer effluent passes to a settler which separates the aqueous and organic phases.  The aqueous phase is analyzed for copper by a Spectronic 20  spectrophotometer.

The basic data for a run consists of the copper and LIX feed rates, the stirrer speed, and the copper level and the feed and aqueous effluent solutions.  The data can be processed to determine the effect of feed rates and stirrer speed on the copper transfer rates.  Depending on stirrer speed, copper removal can vary from 0 to 70 percent.

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