Ion-Exchangeable and Absorptive Reinforced Membranes for Efficient Electrochemical Removal of Heavy Metal Ions in Wastewater
발표자
()
초록
내용
In this study, we introduce a highly efficient method, electrodialysis, to remove heavy metal ions at low concentrations, with a focus on copper ions from semiconductor wastewater. The membranes were fabricated using the pore-filling method, involving the impregnation of porous PTFE substrates with a monomer blending solution, including vinyl phosphonic acid (VPA) and crosslinking agents such as polyethylene glycol dimethacrylate (PEGDMA), acrylated thiourea (ATU) and acrylated tannic acid (ATA). The membranes exhibited exceptional mechanical and dimensional stability, making them suitable for use in electrodialysis systems. We evaluated the performance of these fabricated membranes by assessing essential parameters such as ion exchange capacity (IEC), ionic conductivity, reusability and batch-type adsorption experiments at different pH levels (pH 5 and 7). As a result of applying the membranes to the electrodialysis system, they demonstrated remarkable efficacy in reducing the copper concentration from 1 ppm to 0.01 ppm