Study of corrosion inhibition performance of Glutaraldehyde on Aluminium in nitric acid solution
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Date
2019-12-29
Journal Title
Journal ISSN
Volume Title
Publisher
University of Eloued جامعة الوادي
Abstract
The inhibition effect of glutaraldehyde on the corrosion behavior of aluminium in 1.4 M
nitric acid solution was studied using weight loss method, adsorption studies and characterized
instrumentally by Fourier Transform Infrared Spectroscopic (FT-IR) analysis. The effects of
inhibitor concentration, temperature and surface coverage were all investigated. The effect of
inhibitor concentration and other parameters were evaluated for different inhibitor
concentrations and the probable mechanism for the studied inhibitor was also proposed. The
results showed that glutaraldehyde possess an excellent inhibiting effect toward the corrosion
of aluminium in nitric acid solution with highest inhibition efficiency of 84.68, 81.34 and
76.87 % at 308, 313 and 318 K in the presence of 0.1 M inhibitor concentration. The values of
the activation energy, rate constant, half-life and rate constant in uninhibited acid solution
were 31.84 kj mol-1
, 3.9 k ×10-3
hr-1
and 1.76 × 102
hr which changed to 57.64 kj mol-1
, 0.60 k
×10-3
hr-1
and 11.55 hr in the presence of 0.1 M inhibitor concentration. The positive values of
enthalpy reflect the endothermic nature of the reaction. The negative values of entropy (ΔS)
signified that the activated complex in the rate determining step represented an association,
rather than dissociation. The adsorption of the inhibitor on the metal surface followed
Langmuir adsorption isotherm.
Description
Artical
Keywords
Corrosion; Glutaraldehyde; Nitric Acid; FT-IR; Kinetic; Thermodynamic parameters
Citation
Husaini,Musa. Usman , Bishir. Ibrahim, Muhammad Bashir. Study of corrosion inhibition performance of Glutaraldehyde on Aluminium in nitric acid solution. Algerian Journal of Engineering and Technology. Vol 02. No 01. University of ElOued. [visited in ../../….]. available from [copy the link here]