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2018 Volume 9 Issue 3

Corrosion Prevention of Aluminum in Acidic Media Using Cydonia Vulgaris Leaves Extract as Environmentally Friendly Corrosion Inhibitor


Zahraa M. Awad, Ahmed N. Abd, Karim H. Hassan
Abstract
Corrosion inhibition of aluminum i(1 M H₃ PO₄)n was investigated in absence and presence of Cydonia Vulgaris leaves (CVL) extracts as friendly corrosion inhibitors. The effect of temperature and inhibitor concentration at immersion time of (3h) was studied using weight loss method. The obtained results revealed that Cydonia Vulgaris leaves(CVL) extracts inhibited aluminum in (H₂ PO₄) and decreased the rate of corrosion. By increasing the concentration and temperature of the inhibitor, its efficiency increased. Higher inhibition efficiency for aluminum corrosion of (95.51%) was obtained at a higher level of inhibitor concentration and temperature. The adsorption of Cydonia Vulgaris leaves(CVL) extracts was found to obey Langmuir adsorption isotherm model. The values of the free energy of adsorption were more than (-20 kJ/mol) which was indicative of a mixed mode of physical and chemical adsorption. Activation enthalpy (∆H*), and activation entropy (∆S*) of aluminum corrosion was found to be (43.7254 kJ mol^(-1)), (-0.1804 kJ mol^(-1) K^(-1) ) and (20.2732 kJ mol^(-1)), (-0.1921 kJ mol^(-1) K^(-1)) in the absence and presence of the extract; respectively.

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JOURNAL OF BIOCHEMICAL TECHNOLOGY
JOURNAL OF BIOCHEMICAL TECHNOLOGY
Journal of Biochemical Technology is a double-blind peer reviewed International Journal published by the Sevas Publishing on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

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FOCUS AND SCOPE
Journal Of Biochemical Technology Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative