Vol.2 , No. 3, Publication Date: Apr. 21, 2015, Page: 27-31
[1] | Echem Ogbonda G., Department of Science Laboratory Technology, Rivers State Polytechnic, Bori. |
[2] | Chukwuike Vitalis I., Department of Pure and Industrial Chemistry, University of Port Harcourt. |
The inhibitive effect of lemon balm leaves extract on the corrosion of aluminium using weight loss method was investigated. The study was carried out at different concentrations of the extract and temperatures. Inhibition efficiency of 95.57% was obtained. This shows that lemon balm leaves extract could inhibit aluminium corrosion in acidic media to a high degree. The inhibition efficiency of the extract was found to increase as the concentration of the extract increased, but decreased as the temperature increased. The sequence in the relationship between temperature and inhibition efficiency coupled with the Langmuir adsorption isotherm plots supported a physical adsorption mechanism.
Keywords
Lemon Balm, Aluminium, Corrosion, Adsorption, Acid, Extract
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