Mechanism of Silica Removal in Electrodeionization (Updated 2026)
The Electropure EDI technical model, and how to improve silica and boron removal
The Electropure EDI technical model, and how to improve silica and boron removal
Boron must be a ppt levels in ultrapure water for semiconductor at advanced 2 nm node technology.
A US antiscalant company has developed a new silica-control chemistry designed specifically to disrupt the silica polymerization on membranes
Boron and silica differ in their acid–base chemistry, which is why boron removal and silica removal require different EDI and ion-exchange approaches.
Silica polymerizes. Boron does not. And Boron is harder to remove using RO, IX, and EDI than Silica.
Mechanism of Silica Removal in Electrodeionization (3-Zone EDI Model) Michael J Snow, Ph.D. May 2006 Keywords: Electrodeionization, EDl, CEDI, Water, Pure, Ultrapure, Silica, SiO2, Silicic acid, H4SiO4, Reactive; Non-reactive; Colloidal; Reverse Osmosis; lon-Exchange; Resin; Anion; Cation; Fouling; Rejection; Process design; Membrane; Zones; Electropure; SnowPure ABSTRACT: Electrodeionization (EDI) is a continuous separation process that uses a … Read more
In México, EDI (Electrodeionización) is used to produce pure and ultrapure water for both Generación de Energía y Farmacéutica (USP PW y WFI). (Electrodeionización para Energia y Agua Farmaceutica) SnowPure works in México with OEMs to choose technologies and processes that will enable good performance and long life for RO (OI) and EDI Electrodeionization (Electrodeionización). … Read more
Silica is critical in high-purity boiler water for power plants to prevent efficiency losses and maintenance issues.