Removal of Metasilicate from Aqueous Solutions with Hybrid Polymer-enhanced Ultrafiltration-electrodeionization Membrane Processes
Articles > Article · 2025
Authors: Esma Nur Saricicek, Gulsev Soysuren, Özgür ARAR
CURRENT ANALYTICAL CHEMISTRY, Journal Indexed in SCI, International, WoS, 2025, vol 21, pp 134-143
DOI: 10.2174/0115734110301699240514052704
Summary
Background In desalination, addressing fouling challenges, particularly concerning silica, is pivotal for generating pure water from seawater and brackish sources. Efficient silica removal is vital for various applications, including power generation and electronics. Electrodeionization (EDI) has proven highly effective in achieving a high removal rate for silica.Objective Optimize silica removal through a combined membrane approach-water-soluble polymer-enhanced ultrafiltration and Electrodeionization (EDI)-for efficient water treatment and improved water quality.Methods The study utilized a 400 mL stirred Amicon cell for Ultrafiltration (UF) in combination with a water-soluble polymer. Additionally, a microflow EDI cell is employed, filled with Porolite A600 anion exchange resin and SST60 cation exchange resin, to optimize silica removal.Results The water-soluble polymer-enhanced ultrafiltration achieved a 25% removal of SiO2, with the remaining silica effectively removed by EDI, resulting in a concentration of 11 mu g/L.Conclusion The combined approach of water-soluble polymer-enhanced ultrafiltration and Electrodeionization (EDI) demonstrated effective silica removal.