FUJIFILM Anion-Exchange Membranes (AEM-Type 12) for Electrodialysis, CEFAEMT12

FUJIFILM AEM-Type 12 is a thin, homogeneous anion-exchange membrane manufactured by Fujifilm Manufacturing Europe B.V. using high-speed roll-to-roll continuous coating technology. It is specifically engineered to pair with CEM-Type 12 in electrodialysis (ED/EDR), reverse electrodialysis (RED), diffusion dialysis, and salt concentration/desalination processes. The membrane consists of a cross-linked polymer network functionalized with fixed quaternary ammonium groups (-NR3)+) cast onto a mechanical reinforcement substrate to balance high permselectivity with low electrical resistance.

The main features of the AEM-type12 are: (1) Low Electrical Resistance: The thin profile (~ 130 um) and high density of sulfonic acid fixed charges provide low internal ohmic resistance, significantly reducing energy consumption in electrodialysis stacks. (2) High Monovalent & Divalent Cation Permselectivity: Delivers high transport numbers for standard cations (Na+, K+, Ca^{2+}, Mg^{2+}) while strictly repelling co-ions (Cl-, SO4^{2-}). (3) Dimensional Stability & Low Swelling: The non-woven composite backing minimizes lateral swelling and distortion during alternating salinity or pH shifts, preventing internal stack leakage. (4) Wide Chemical Compatibility: Resistant to standard CIP (Clean-In-Place) chemical regimes, including mild acids and caustic washes.

The primary application fields are: (1) Electrodialysis (ED / EDR): Brackish water desalination, industrial zero-liquid discharge (ZLD) concentration, and food/beverage demineralization (e.g., whey, juice). (2) Reverse Electrodialysis (RED): Salinity gradient power generation (harnessing blue energy between river water and seawater). (3) Industrial Effluent Treatment: Recovery of heavy metal cations (Ni^{2+}, Cu^{2+}, Zn^{2+}) from electroplating rinses and acid recovery circuits. (4) Bipolar Membrane Stacks: Paired with anion exchange membranes (e.g., Fujifilm CEM-Type 12) for acid/base generation via water splitting.

Large sheet sizes also can be supplied upon request.