Studies on Rhodamine B dye transport through supported liquid membrane from basic aqueous solutions using phenol as membrane phase S. Elumalai, G. Muthuraman*
PG & Research Department of Chemistry, Presidency College (Autonomous), India, Chennai- 5.
The aim of this work is to investigate the transport of Rhodamine B across supported liquid membrane under various experimental conditions. The phenol was mixed with xylene which acts as carrier in membrane phase. A flat sheet polytetrafluoroethylene (PTFE) membrane was impregnated with xylene in phenol. The flux value of Rhodamine B increased with increasing…show more content… The feed phase containing 140 mL of 50 mg/L aqueous dye solution at pH = 11 ± 0.1 and strip phase containing 140 mL of 8 mol/L acetic acid solutions were taken in SLM reactor. Agitation was performed in both (feed and strip) compartments by using Teflon coated magnetic pellets of 12 mm length. After different time intervals, 2-3 mL of sample was taken from feed as well as strip chamber and then the dye concentration was measured spectrophotometrically at 554 nm. If the absorbance of sample exceeded 0.900 the samples were diluted with double distilled water. The experimental setup of SLM is given in Fig.…show more content… The flat sheet PTFE membrane that offers excellent product uniformity, strength and chemical stability. The effect of various parameters such as pH of the feed phase, carrier concentration, stirring speed, time, dye and stripping acid concentration on the transport RB dye was examined. Under the optimum conditions (feed phase concentration of 50 mg/L of RB, strip phase concentration of 8.0 mol/L of acetic acid, pH 11 ± 0.1, 0.8 mol/L of phenol in xylene on the membrane phase and stirring speed 500 rpm at room temperature), the maximum permeability of 1.805 × 10-5 m/s was obtained. The optimized condition and suggested mechanism of the transport of RB dye through SLM impregnated in phenol-xylene system can be applied for the removal of dye from the industrial