Treatment of oil-in-saltwater emulsions by in-situ production of magnetic FeOx nanoparticles

By Waller, Gordon H.; Martin, Curtis A.; Jones, Nicholas J.; Paynter, Danielle M.
Published in Journal of Water Process Engineering 2019

Abstract

Oil-in-saltwater emulsions produced to simulate contaminated bilge water were successfully treated by electrochemical oxidation of iron anodes (electrocoagulation). Turbidity measurements of the as-prepared emulsions before and after treatment show a reduction in turbidity of over 98%, while application of a permanent magnet was found to be effective in reducing the settling time for the Fe-oxide containing sludge. Solution temperature was found to be the most critical parameter for influencing the efficiency of the electrocoagulation process, while electrode separation and solution contents (i.e. the presence of surfactants and oil) had less of an influence, especially for a solution temperature of 45

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