Different Configurations of Bipolar Membrane Electrodialysis (EDBM)

Gu Zhouying
Jun 25
2 min read

Introduction

Bipolar Membrane Electrodialysis (EDBM) is an advanced membrane separation technology that utilizes an electric field to split water molecules into H⁺ and OH⁻ ions, enabling the conversion of salt solutions into their corresponding acids and bases.

EDBM configurations | DESALT

YASA ET offers multiple EDBM configurations tailored to specific application needs:

YTEDBM-S: Three-compartment type

This configuration consists of a cation exchange membrane, a bipolar membrane, and an anion exchange membrane, forming three distinct chambers: acid, salt, and base. It is ideally suited for the simultaneous conversion of inorganic salts (e.g., NaCl, Na₂SO₄) into their corresponding acid and base forms (e.g., HCl and NaOH).

EDBM Electrodialyzer component illustration

YTEDBM-A: Two-compartment type for acid production

This setup includes a bipolar membrane and a cation exchange membrane. It is designed to convert organic acid salts (e.g., sodium acetate) into their free acid forms (e.g., acetic acid), with sodium hydroxide as a by-product. This configuration is particularly beneficial for industries such as food and pharmaceuticals, where precise pH control is critical.

YTEDBM-B: Two-compartment type for base production

This configuration features a bipolar membrane and an anion exchange membrane. It facilitates the conversion of organic base salts (e.g., aniline hydrochloride) into their free base forms, with acid generated as a by-product. It is commonly used in the production of fine chemicals and electronic-grade chemicals.

Applications and Benefits

YASA ET EDBM systems are widely applied in:

Organic acid recovery

Fine chemical production

Resource recycling and regeneration

Zero Liquid Discharge (ZLD) systems

With a modular design that supports laboratory research, pilot testing, and industrial-scale deployment, YASA ET's solutions offer exceptional flexibility and customization to meet diverse industrial operation requirements.