Effect of carrier on the fabricated of polymer inclusion membrane: Characteristics and kinetic study

Abstract

Vary composition of carrier in fabricated polymer inclusion membranes (PIMs) were applied for extraction of basic dye, methylene blue (MB) to achieve the optimal extraction efficiency (E%) among the fabricated membranes. The PIM is composed of poly(vinyl) chloride (PVC) as the base polymer, bis-(2-ethylhexyl) phosphate (B2EHP) as an extractanting agent and dioctyl phthalate (DOP) as the plasticizer. The fabricated PIMs were characterized by membrane porosity, contact angle (CA) and Fourier Transforms Infrared Spectroscopy (FTIR). Kinetic modelling was conducted to study the dye extraction process by using the pseudo-first-order and pseudo-second-order. It was found that the kinetic model shows highly significant of model fit with the kinetic data using pseudo-second-order. The addition of 30% B2EHP imparted the greatest enhancement on the features of PIMs and also accomplished great performance for extraction of methylene blue (> 99% of extraction)