Semi-permeable membrane fabricated from organoclay/PS/EVA irradiated by ɣ-rays for water purification from dyes

Abstract

This article summarizes the modification of bentonite to organoclay consisting of aniline monomer incorporated into the bentonite matrices. The organoclay (OC) hybrid has been exposed to gamma rays at dose of 50 kGy resulting the aniline polymerization. Organoclay's color is dark red. The blend polymer (PS/PEVA) was mixed with 33 wt% organoclay in Toluene solvent and then irradiated to 50 kGy. Many characterization techniques have been used to identify changes in clay in organoclay (OC) have relatively high surface area, strong dye adsorption and highly variable surface area. XRD analysis shows increased of interplanar distance (d) of bentonite after aniline modification that confirmed by FTIR analysis and also when composite with blend polymer (PS/PEVA). SEM reveals the irregular pores structure of semi-permeable membrane ranged from 35 to 3 μm. In this article, novel membrane's ability to purify water polluted with three different dyes: Toluidine Blue (TB), Amido Black (AB) and Remazol Red (RR). It is inferred from results that the aniline treatment enhances dye adsorption by bentonite and increases dye adsorption when composite with blend polymer. This future is give effective water purification membrane. It was found that over 99% TB molecules in water solution were adsorbed by OC/PS/PEVA in fifteen second.