De emulsification cannot be done by

The process of separation of cream from milk is known as demulsification which involves the breaking of an emulsion into two separate liquid layers and can't be achieved by centrifugation.

 Different demulsification methods used for the separation of crude oil emulsions which are classified into thermal (heating and microwave irradiation), mechanical (settling under gravity, centrifugation, filtration, membrane, ultrasound treatment), chemical, biological, electrical, magnetic methods .