Table 5 Retention of toluene and hexane emulsified in water using different emulsifiers.
From: Selective solvent filters for non-aqueous phase liquid separation from water
Emulsifier | pH | Separation |
|---|---|---|
Tween 20 (pH = 6) | 6 | No separation |
Oleic acid | 6 | No separation |
Zein solution | 13 | No separation |
Zein particles (obtained with KCl) | 13 | 62% (volume based) retention of toluene and hexane |
Humic acids | 5.5 | > 97% (volume based) retention of toluene and hexane |
