The Passage of Deforming Drops Through a Slotted Microfilter

Prediction of size distribution of crude oil drops in the permeate using a slotted pore membrane

“…It has been noticed that the higher the API value of a crude oil, the lower interfacial tension between dispersed and continuous phases observed [15]. Static force ( x c F ) and can be calculated using equation (1) is a linear function of interfacial tension ( ) between dispersed and continuous phases [1,15]. It means that the higher the interfacial tension ( ) between dispersed and continuous phases; the higher would be rejection of crude oil drops through the membrane; and a lower portion of drops would be passing through the membrane into the permeate [15].…”

“…It is a threat for life in water and the concentration of oil in the sea water is limited to 30 mg l -1 or below [1]. Initially, hydrocyclones were used as primary separators, but the separations targets for drops below 40 µm were not achieved and the process was expensive [2][3][4].…”

Stability and deformation of oil droplets during microfiltration on a slotted pore membrane

“…The relevant theory was introduced earlier in [2], where the derivation was not provided, and the final equation given contained an error and requires modification 4 for the current case. The detailed derivation is presented here in the appendix.…”

“…The quantities of Produced Water discharged into the sea ranges from 860 to 2700 m 3 day -1 [1]. This poses a threat to aquatic life and the amount of oil in Produced Water that can be discharged into the sea is limited to 30 mg l -1 [2]. Hydrocyclones can be used as a secondary separator, after gravity sedimentation, for removal of oil content from Produced Water.…”

“…When using circular pores, it is the trans-membrane pressure that governs the droplets passing through the membrane into the permeate, while in the case of the slotted pores it is the drag force around the droplets induced by the motion of the fluid that is responsible for the droplets passing through the membrane [2].…”