TITLE:
Application of Factorial Design of Experiment for Optimization of Inhibition Effect of Acid Extract of Gnetum africana on Copper Corrosion
AUTHORS:
Ogbonna Chris Nkuzinna, Matthew Chukwudi Menkiti, Okechukwu Dominic Onukwuli, Gordian Onyebuchukwu Mbah, Bernard Ibezim Okolo, Melford Chuka Egbujor, Rabboni Mike Government
KEYWORDS:
Corrosion Inhibition, Gnetum africana, Copper, Optimization
JOURNAL NAME:
Natural Resources,
Vol.5 No.7,
May
27,
2014
ABSTRACT: The inhibition of copper corrosion by acid extract of Gnetum africana was studied using weight loss method of monitoring corrosion rate. The inhibition of Gnetum africana on copper corrosion was optimized by application of 23 factorial design. While the interactive effects of temperature, inhibition concentration and reaction time were investigated, the input factors and output response were also optimized. Optimum conditions for inhibition of Gnetum africana on copper corrosion were recorded at temperature of 303 K, reaction time of 24 h and inhibition concentration of 0.003 g/L. It could be concluded that factorial design was adequately applicable in the optimization of process variables and that Gnetuma africana sufficiently inhibited the corrosion of copper at the conditions of the experiment.