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Particle Engineering Research Center 1 , University of Florida; Gainesville, Florida-32611.

Preliminary Investigation On Corrosion In Oil-Water System. Akshay Rajopadhye 1 , Eric Bidinger 1 , Dr. Vijay Krishna 1 , Dr. Brij Moudgil 1 , and Dr. Kevin Powers 1. Particle Engineering Research Center 1 , University of Florida; Gainesville, Florida-32611. EXPERIMENTAL PROCEDURE.

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Particle Engineering Research Center 1 , University of Florida; Gainesville, Florida-32611.

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  1. Preliminary Investigation On Corrosion In Oil-Water System Akshay Rajopadhye1, Eric Bidinger1, Dr. Vijay Krishna1, Dr. Brij Moudgil1, and Dr. Kevin Powers1 Particle Engineering Research Center1, University of Florida; Gainesville, Florida-32611. EXPERIMENTALPROCEDURE INDUSTRIAL RELEVANCE OF SURFACTANT STRUCTURES INTELLECTUAL MOTIVATION Understand the mechanism of corrosion inhibition by surfactant adsorption on metal surfaces KNOWLEDGE GAPS + + + • Mechanism of surfactant adsorption on metals • Structure of adsorbed surfactant coating • Corrosion inhibition mechanism by surfactant adsorption Fe2+ – Fe(OH)2 e- Steel – • Corrosive medium used: • Aqueous phase : 1M HCL • Oil phase : Motor Oil • Surfactants used: Palmitic Acid; CetylTriammonium Bromide RESEARCH APPROACH • Establish a protocol for two phase corrosion testing • Investigate on the effect of surfactant partitioning on corrosion inhibition • Develop a corrosion inhibition mechanism SUMMARY SurfactantAdsorptionMechanism RESULTS & DISCUSSION • Weight loss method not appropriate for two phase corrosion testing • Corrosion product (Iron oxide?) seems to deposit on test coupons; some of which goes into the mixture turning the mixture black • Apparent weight loss in control coupons less than those placed in surfactant solution • Anionic surfactants have no significant effect on corrosion inhibition • Cationic surfactants seem to promote corrosion • Color change suggests some interaction of surfactants with the additives in Motor oil Cationic Anionic Control CTAB FUTURE WORK • Evaluate the alternative method (e.g. Impedance Spectroscopy) for two phase corrosion testing • Determine the surfactant partitioning in oil and water phases • Evaluate the selected surfactants for corrosion inhibition Acknowledgement: This material is based upon work supported by the National Science Foundation under Grant No. 0749481/0749461 and by CPaSS industry members. Spring 2013 IAB Meeting – February 12-14, 2013

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