Comparative Investigation of Thermodynamic Parameters of Seafood Waste as an Inhibitor for Mild Steel Corrosion in Varied Acidic Concentration

被引：0

作者：

Priya, M. ^{[1
]}

Senthil, M. ^{[2
]}

Selvi, S. Kalai ^{[1
]}

Ranjitha, S. ^{[3
]}

机构：

[1] Velalar Coll Engn & Technol Autonomous, Dept Chem, Erode 638012, Tamilnadu, India

[2] Periyar Univ, Kandaswami Kandars Coll, Dept Chem, Velur 638182, Tamilnadu, India

[3] Velalar Coll Engn & Technol Autonomous, Dept Phys, Erode 638012, Tamilnadu, India

来源：

ORIENTAL JOURNAL OF CHEMISTRY | 2022年 / 38卷 / 05期

关键词：

Corrosion; Crab shell; Mild steel; Temperature; Adsorption;

D O I：

10.13005/ojc/380527

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Mild steel (MS) is the material that is frequently used in various sectors because of its specific properties like ductility and malleability, however it corrodes readily when exposed to corrosive environments. Inhibition is the best method to prevent corrosion, since it may be adjusted or added in place without interrupting a process. The present study focused on the thermal behavior of Crab Shell extract (CSE) as corrosion inhibitor on the surface of the MS in 0.5M and 1M sulphuric acid medium. Temperature study was employed to test the inhibitory action of the extract on MS using weight loss measurement. The effectiveness of inhibition declines with the rise of temperature. In 0.5M H2SO4 at 303 K, the maximum efficiency was observed. The nature of adsorption in both the acidic medium follows El-Awady adsorption isotherm. The activation and thermodynamic study revealed that the reaction is spontaneous in nature. The inhibition process is endothermic which is confirmed by the positive enthalpy values.

引用

页码：1290 / 1295

页数：6

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