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Asian Journal of Research in Chemistry
Year : 2015, Volume : 8, Issue : 10
First page : ( 613) Last page : ( 617)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2015.00097.8

Corrosion Inhibition of Carbon Steel in RO water Using Trisodium Citrate-Zn2+ System

Deepa T.1,*, Thangavelu C.2, Sekar M.3, Sudhakaran R.4

1Department of Chemistry, Govt. Arts College (Autonomous), Karur-639 005, Tamil Nadu, India

2Department of Chemistry, Govt. Arts College for Women, Nilakottai, Dindigul-624 202, Tamil Nadu, India

3Department of Chemistry, Periyar E.V.R College (Autonomous), Trichirappalli-620 023, Tamil Nadu, India

4Department of Chemistry, Govt. Arts college, Tiruchirappalli-620 022, Tamil Nadu, India

*Corresponding Author E-mail: deepakarishma07@gmail.com, drkctv@gmail.com, sanjumetra@gmail.com

Online published on 8 December, 2015.

Abstract

The Inhibition Efficiency (IE) of Trisodium Citrate (TSC) in controlling corrosion of carbon steel in RO water in the absence and presence of Zn2+ has been evaluated by weight-loss method. The formulation consisting of 150ppm TSC and 10ppm Zn2+ has 72.5% IE. It is found that the inhibition efficiency of TSC increases with the addition of Zn2+ion. A synergistic effect exists between TSC & Zn2+. Polarization study and characterization surface analysis studies confirm the protection of the carbon steel surface by inhibitive film. A suitable mechanism for corrosion inhibition has been proposed based on the results obtained from the above studies.

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Keywords

Carbon Steel, Corrosion Inhibition, Trisodium Citrate, RO Water.

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