Electrokinetically assisted oil-water phase separation in oily sludge with implementing novel controller system

Journal of Hazardous Materials
Arash Fellah Jahromi, Maria Elektorowicz

Abstract

Upstream and downstream petroleum industry generate of significant amounts of oily sludge per day. On the other hand, a disposal of such sludge requires expensive pre-treatments following local regulations. Conventional processes, like centrifugal separation provide sludge volume reduction and water extraction. However, water-in-oil emulsion requires extra stages for phase separation, which overall increases the costs. Therefore, electrokinetically (EK) assisted oil-water phase separation method was considered. In this study, a novel implemented controller, installed into the EK system, permitted to increase the length of exposure time to electrical field, while a significant decrease of energy consumption was observed. The controller, implemented based on Percolation Theory and applied to a linear horizontal EK system, showed enhanced sludge demulsification and improvement the quality of separated fractions. TGA analysis showed a superior quality of liquids extracted by EK with controller comparing to liquids without controller or generated by centrifuging process. A reaction rate with respect to temperature to assess the presence of water in the oil was also defined. The method, shown in this paper, advances the oil-water pha...Continue Reading

Citations

Feb 21, 2021·Journal of Hazardous Materials·Yasser HamidiAmir Sarrafi
Jun 8, 2019·Chemosphere·Setareh Taslimi TaleghaniMaria Elektorowicz

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