Fumasep FBM-PK Bipolar Membrane

Overview

Fumasep FBM-PK is a bipolar membrane that combines a cation-exchange layer (CEM) and an anion-exchange layer (AEM) in a single laminate. Unlike standard CEMs, this membrane is designed for water-splitting at the interface: under reverse bias, water dissociates into H⁺ and OH⁻, allowing the generation of acid and base streams without adding chemicals. This makes FBM-PK highly useful in bipolar electrodialysis, pH control, CO₂ capture/conversion cells and novel electro-membrane processes.

Working Principle
When a suitable potential is applied across the bipolar junction, the membrane drives water dissociation. The CEM side passes H⁺ and the AEM side passes OH⁻, so users can create acidic and alkaline compartments from a neutral feed. This reduces chemical consumption and enables compact, membrane-based process intensification.

Key Features

• Integrated CEM/AEM structure (true bipolar membrane)
• Supports in-situ acid and alkali generation
• Compatible with plate-and-frame electrodialysis stacks and lab test cells
• Suitable for university and R&D environments investigating emerging electro-separation technologies
• Can be paired with ScienceGears potentiostats, flow cells and monitoring setups
  
  

Applications

• Bipolar electrodialysis for acid/base production
• Electro-driven pH adjustment and regeneration
• CO₂ capture/conversion systems needing local pH shifts
• Advanced separation and water treatment research
• Teaching demonstrations of water-splitting membranes
  
  

Why ScienceGears
ScienceGears can advise on stack design, clamping pressure and operating current to get stable performance from FBM-PK in Australian and New Zealand labs.