PRODUCTS
ED, ED-BM, EDI
Among four major module types for desalination and for electrodialysis (ED) with bipolar membranes (BM), different sizes are available. The standard electrode projection area is indicated as the active area. Feel free to request the module of your interest.
​ED single cell
Active area, cm': 5; 10; 25; 50
One cell pair with homogeneous flow distribution, for measuring limiting current density, electrical resistance, etc. Suitable eg. for comparing different membranes and spacers.
ED & ED-BM stacks
In addition to the cathode and anode rinsing, the stack has tour nuld streams, which makes it suitable for ED-BM.
ED-stack MINI
Active area: 58 cm'
145 mm long and 40 mm wide channel with very good flow distribution. Up to 20 cell pairs for process development, parameter investigation, scale-up studies and batch desalinations
EDI
Active area: 300 cm'
Electrodeionization stack with separated beds of cation- and anion exchange resin to produce ultrapure water from RO-permeate at 20 to 50 L/h per unit
Characterization and Configuration of ED Lab Modules
Current-voltage curves, current efficiency, elecro-osmotic water transfer, mass transfer coefficient and other parameters can be determined and used to calculate key process parame-ters, like product-specific energy consumption.
Electrodialysis (ED) lab modules consist of membranes, spac-ers, end-plates and clamping
The cathode and anode compartments have separate inlet and outlet. ED-modules have two fluid streams: diluate and con-
centrate. Modules with four streams are suitable for electrodial-
ysis with bipolar membranes (ED-BM).
The cells can be easily assembled and disassembled using variety of available membranes and spacers.
Options available for ED single cells and stakcs
-
polarity reversal
-
integrated temperature sensor
-
sensing electrical potential difference between selected compartments
-
compatibility to hot-water (80°C) sanitization
-
ion-conductive spacer
-
dedicated test-bench
Spare parts and additional components:
-
integrated spacers in variety of thickness
-
membranes of different properties
-
Electrodes, e.g. titanium
An iteration of tow simulation te optimize tow distribution ip new medu le design