Ultrafiltration

Emulsion separation and division while flowing over a porous membrane.

Advantages

• Separation of emulsified oil
• Achieve the lowest oil concentrations
• Partial recovery of the cleaner

Disadvantages

• Use of ultrafiltrable cleaners required
• Retention capability of the membranes dependent on selective separation limit, thus compromise between minimal oil thresholds and cleaning recovery
• Cannot be used for rinsing bath volume