What is electrodialysis?

A membrane-based process using electric field to remove ions (salts) from water or solutions.

How is removal efficiency calculated?

Based on current, flow rate, membrane area, and ion transport number.

Electro Dialysis Salt Removal Calculator

Electro Dialysis Salt Removal - Perform scientific calculations with precision and accuracy.

Electro-dialysis Salt Removal Calculator

Ion Separation with Electric Current

Initial Concentration (Cᵢ)

mol/m³

Final Concentration (Cբ)

mol/m³

Flow Rate (Q)

m³/s

Membrane Area (A)

m²

Current Efficiency (ξ)

0.0 - 1.0

Electro-dialysis (ED)

Electro-dialysis uses an electric current and ion-exchange membranes to separate ions from a solution. This calculator determines the required current to achieve a desired salt removal rate.

Salt Removal Rate (mol/s):

Required Current (A):

$\Phi$: Salt Removal Rate (mol/s)
$Q$: Flow Rate (m³/s)
$C_i, C_f$: Initial & Final Concentration (mol/m³)
$I$: Electric Current (A)
$F$: Faraday's Constant (~96,485 C/mol)
$z$: Ion Charge Number (e.g., 1 for NaCl)
$\xi$: Current Efficiency (unitless)

Electro-Dialysis Salt Removal

Electro-dialysis removes ions from water using ion-exchange membranes and an applied electric field; salt removal depends on current, time, membrane area, and feed concentration.

Concept

Removed mass ∝ current × time × transport number; efficiency depends on recovery and system design.

Example

Increasing current or run time boosts ion transport; scaling membrane area increases throughput.

FAQs

Energy use?
Depends on voltage, current, and system resistance.

Selectivity?
Membrane choice affects which ions are removed.

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