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Tea Leaves Extract As a Corrosion Inhibitor for Mild Steel in
Hydrochloric Acid
Nur Khairunnisa binti Nazri
Supervisor: Dr. Nabilah binti Ismail
Bachelor of Science (Chemical Sciences)
School Of Fundamental Science
Camellia Sinensis (tea) extract is commonly consumed due to its antioxidant
properties. These properties reveal significant advantages for green corrosion
inhibitor. In this study, the active compound in Camellia sinensis (tea) leaves were
extract in methanol and further characterize with FTIR to identify the functional group
in the tea leaves extract. The presence of the active compounds such as tannin, phenol
and flavonoid compounds was further test with qualitative method. Corrosion
prototype set up consist of coated mild steel JR235 grade with size (25 x 25 x 3) mm
immersed in the stagnant medium in control condition for 50 days. Performance of
tea extract as anticorrosion was evaluated using weight lost analysis and stereo
microscope images. Result shows that weight different indicate the extract inhibited
the corrosion on mild steel surface. All the results show that rate of corrosion is low
and tea extract can inhibit corrosion.
471 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018