| abstract |
Disclosed is a process of facilitating the separation of oil from oil-in-water liquid emulsion systems. The system is contacted with a separation aid including either (1) certain polymers, (2) polymers in conjunction with certain salts, or (3) polymers in conjunction with salts and silica sol. The polymers are water soluble cationic vinyl polymers. The salts are water soluble salts of polyvalent metals which salts in water solution give an acid reaction. |