Removal Of Chromium (VI) With Aliquat 336 Impregnated In Amberlite XAD–16. I. Batch Mode Sorption Studies

Abstract

Kertas kerja ini adalah untuk mengkaji penyingkiran kromium (VI) dengan menggunakan solvent impregnated resin (SIR). SIR dihasilkan dari penyilangan antara resin Amberlite XAD–16 dengan Aliquat 336 extractant. SIR disediakan dalam tiga kepekatan yang berbeza iaitu 0.5, 1.0 dan 2.0 gram Aliquat 336 gram XAD–16. Penyilangan SIR disediakan secara kaedah basah. Kesan terhadap pH untuk penyerapan kromium (VI) dikaji serta eksperimen keseimbangan untuk tiga kepekatan berbeza telah dijalankan. Kajian mendapati penyerapan kromium (VI) paling berkesan pada pH 6 di mana sebanyak 90% penyingkiran berlaku pada tahap optimal. Kapasiti penyerapan kromium (VI) adalah 0.47, 0.56 dan 0.63 mmol/g untuk 0.5 g/g, 1.0 g/g and 2.0 g/g. Kata kunci: Kromium (VI), solvent impregnated resins, Aliquat 336 This work investigates the removal of chromium (VI) from aqueous solutions using solvent impregnated resin (SIR). The solvent impregnated resin was formed by impregnating Amberlite XAD–16 resin with Aliquat 336 extractant. Solvent impregnated resins were prepared in three different concentrations; 0.5, 1.0 and 2.0 grams Aliquat 336 per gram XAD–16. The solvent impregnated resin was formed using the wet method. The effect of pH on the sorption of chromium (VI) ions was investigated; equilibrium experiments were carried out with the different concentrations of solvent impregnated resin to test the sorption capacity. It was found that the sorption of chromium (VI) was most effective at pH 6. It was found that 90% removal was achieved under optimal conditions. The adsorption capasity for chromium was found to be 0.47, 0.56 and 0.63 mmol/g for 0.5, 1.0 and 2.0 g/g, respectively. Key words: Chromium (VI), solvent impregnated resins, Aliquat 336