GO-PES membrane for industrial dye effluent water purification

Abstract

Clean water scarcity is a major global issue, posing significant challenges for both the environment and human health. A major concern in industrial wastewater management is the presence of elevated concentrations of dyes in water systems. Graphene-based nanomaterial membranes offer a proactive solution, effectively removing industrial dye contaminants from water. The intrinsic two-dimensional structural attributes and remarkable properties exhibited by graphene and grapheme oxide (GO) provide opportunities for their integration into nano-porous materials. When combined, these materials offer modifiable characteristics, enabling fine-tuning for enhanced efficacy in water filtration applications. Utilizing a pressureassisted technique, synthesized GO-PES (GO-Poly ether sulfone) nano porous membranes demonstrate heightened efficacy in the removal of Methylene Blue (MB) and Methyl Orange (MO), excelling particularly in key parameters such as membrane selectivity and permeation flux. In this study, industrial dye filtration membranes were synthesized using four different concentrations of GO to modulate the amount of GO incorporated. The results reveal notable trends, as GO concentration increase, a increment of selectivity and decrease of flux was observed. A maximum selectivity of 72.4% was observed and a maximum flux of 0.03332 m3/m2s was also observed.