Factorial design in optimization of extraction procedure for copper (II) using Aliquat 336 and Tri-n-butylphosphate based supported liquid membrane

Abstract

In the present paper, extraction procedure for copper (II) present in an aqueous sulphate media using a supported liquid membrane by chloride tri-N-octylmethylammonium (Aliquat 336) and Tri-n-butylphosphate from molar ratio 1:1, with polytetrafluoroethylene as a membrane support was studied. The effects of various parameters such as initial pH, potassium thiocyanate concentration and ammonium acetate concentration on the extraction yield, were carried out. By a calculation programme using Chemical Equilibrium in Aquatic System V. L20.1, the determination of the percentages of the present species before and after extraction were given in aqueous medium and on the membrane to be able to determine the relation between the nature of the extracted species and the extraction yield. The optimization process was carried out using 2 3 factorial designs. Initial pH (pH i ) of feed solution, the concentration of potassium thiocyanate and the concentration of ammonium acetate were regarded as factors in the optimization. Student's t-test on the results of the 2 3 factorial design with eight runs for copper (II) extraction demonstrated that the factor concentration of potassium thiocyanate in the levels studied are statistically significant. Under the optimum conditions the percentage of extracted copper (II) was 93.6% in one step.

Treatment of Wastewater by Nanofiltration

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Functionalization of polyacrylonitrile nanofiber mat via surface-initiated atom transfer radical polymerization for copper ions removal from aqueous solution

“…Several technologies have been developed for the removal of Cu 2+ from aqueous solution, such as electrodeposition [3,4], ion exchange [5,6], membrane separation [7][8][9][10][11], adsorption [12][13][14][15][16], etc. Compared to other methods, adsorption is simple and effective due to its easiness to operate and simplicity to design.…”

Highly Efficient Extraction of Cadmium(II) in Nitrate Medium by Quarternary Ammoniums

“…Liquid effluents containing cadmium can be treated using conventional physical and chemical techniques such as, precipitation [7] [8], adsorption [9] [10], dialysis/electro-dialysis [11], supported liquid membrane [12]- [14], emulsion liquid membrane [15]- [17] and liquid-solid extraction [18]. Solvent extraction is one of the most promising techniques for separation of various metals species including cadmium(II) [19]- [21].…”