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.
Boron and silica differ in their acid–base chemistry, which is why boron removal and silica removal require different EDI and ion-exchange approaches.
Paths to Improve Boron Rejection using 2-Pass RO
Silica polymerizes. Boron does not. And Boron is harder to remove using RO, IX, and EDI than Silica.
Water for sterilization, including steam sterilization and autoclaving has an updated requirement and standard – AAMI ST108.
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
Simplified, Value-Priced EDI A Complementary Technology to Portable Exchange DI (PEDI) EDI for Dealers is now a reality. Ultrapure water is a concern for water treatment companies who service critical applications such as Laboratory and Pharmaceutical. You must apply the right technology for your customers’ needs, while remaining competitive and realizing a reasonable profit. EDI … Read more
EDI, Why FCE is Important for Electrodeionization System Performance FCE is Important for EDI System Performance. Electrodeionization systems depend on conductivity, CO2, and Silica; all brought together by using FCE, or Feedwater Conductivity Equivalent. For an electrodeionization system to operate properly, the feed water must be high-quality Reverse Osmosis (RO) permeate. An RO permeate water … Read more