Open AccessEvaluation of Lime Juice as Potential Green Corrosion Inhibitor Using Gravimetric and Electrochemical Studies
Author(s) -
S. J. Hepziba Magie Jessima,
B. Rakesh,
Moksha Muthappa,
S. Subhashini
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22730
Subject(s) - chemistry , lime , corrosion , gravimetric analysis , dielectric spectroscopy , adsorption , electrochemistry , langmuir adsorption model , nuclear chemistry , metallurgy , organic chemistry , electrode , materials science
Lime, a vibrant fruit of citrus family is known for its antioxidant as well as anti-microbial properties.The constituents of lime juice include organic acids, polyphenols, soluble sugars, vitamins, mineralsand amino acids. These details prompted to experiment lime juice as corrosion inhibitor for mild steelin 1 M HCl. The weight loss studies showed that the corrosion inhibition efficiency increased withincrease in concentration of the lime juice as well as increase of temperature. The inhibition efficiencyreached a maximum of 96% for an immersion period of 24 h. The best fit for the adsorption processobeyed Langmuir isotherm. The negative value of ΔGads showed the spontaneity of the corrosioninhibition process. The corrosion inhibition efficiency of the acidified lime juice was further validatedby electrochemical studies namely AC impedance studies and potentiodynamic polarization studies.The surface morphology study was performed used optical profilometer.