Preliminary communication

Use of Extracted Green Inhibitors as a Friendly Choice in Corrosion Protection of Low Alloy Carbon Steel

A. Jano ; Natural Sciences Faculty, Tirana University, Albanija
A. Lame (Galo) ; Corrosion Laboratory, Department of Chemistry, Natural Sciences Faculty, Tirana University, Albanija
E. Kokalari (Teli) ; Department of Chemistry, Natural Sciences Faculty, Tirana University, Albanija

Abstract

Mitigation of corrosion impact on environment is an important step in environmental protection. Use of environmentally friendly corrosion protection methods is very important. It is smart to choose cheap and safe to handle compounds as corrosion inhibitors. The use of green inhibitors (extracted inexpensively, from the seed endosperm of some Leguminosae plants), and investigation of their efficiency in corrosion protection is the aim of this study. As green inhibitor one kind of polysaccharides (galactomannan) from locust bean gum (also known as carob gum, carob bean gum) extracted from the seed of carob tree is used. Corrosion protection efficiency of these extracted green inhibitors was tested for carbon steel marked as: steel 39, steel 44, and iron B 500 (usually applied as reinforcing bars to concrete). Sulfuric acid solution in the presence of chloride ions was used as corrosion media. The composition of corrosion acid media used was 1 mol L–1 H₂SO₄ and 10–3 mol L–1 Cl– (in the form of NaCl). Electrochemical techniques such as potentiodynamic polarization methods were used for inhibitor efficiency testing.

Keywords

green inhibitor; galactomannan; corrosion; carbon steel; linear polarization

Hrčak ID:

92460

URI

https://hrcak.srce.hr/92460

Publication date:

21.11.2012.

Article data in other languages: croatian

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