INVESTIGATION OF CORROSION INHIBITION POTENTIAL OF HYPHAENE THEBAICA SHELLS EXTRACT ON TANNERY MACHINES PARTS IN ACIDIC MEDIUM

Abstract

Corrosion inhibition potential of ternary machine part was investigated by using ethanoic extract of hyphaene thebaica shells as inhibitor at different temperature of 313K and 333K. The Tannery machines part which are majorly made up of mild steels are subjected to harsh conditions, which include exposure to moisture, air, acid, base, salt and other environmental components that causes corrosion on machines’ parts. The aim of this research was to generate measurable and testable data towards the control of corrosion using plant (hyphaene thebaica shells ethanolic extracts) as inhibitor. This was accomplished through the determination of inhibitor’s performance by weight loss techniques, determination of metal-inhibitor interaction mechanism using kinetic parameters and adsorption isotherms (Langmuir and Temkin), the corrosion process through the use of exposure time, phytochemicals of the shell extracts, inhibitor concentration, media concentration, temperature, initial weight of metal and the weight of the metals in every 2 hours for a total of 6 hours. A weight loss technique was adopted and the weights of the mild steel were recorded every 2 hrs for 6 hrs. The highest inhibition efficiency (78.44%) was attained at 333 K for 0.1 g/dm3 concentration of the plant inhibitor. Inhibition efficiency decreased with further increase in the temperature. The green inhibitor was found to be effective because it is ecofriendly, inexpensive and biodegradable.