Utilization of watermelon rind extract as a green corrosion inhibitor for mild steel in acidic media

被引：73
作者：
Odewunmi, N. A. [1 ]
Umoren, S. A. [1 ]
Gasem, Z. M. [1 ]
机构：
[1] King Fahd Univ Petr & Minerals, Res Inst, Ctr Res Excellence Corros, Dhahran 31261, Saudi Arabia
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 21卷
关键词：
Watermelon; Acid corrosion; Corrosion inhibition; Mild steel; Biomaterials; CONSTANT-PHASE-ELEMENT; PLANT-EXTRACTS; NAUCLEA LATIFOLIA; H2SO4; SOLUTIONS; NATURAL HONEY; CARBON-STEEL; HCL MEDIUM; SPECTROSCOPY; TEMPERATURE; BEHAVIOR;
D O I：
10.1016/j.jiec.2014.02.030
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electrochemical techniques were used to investigate the efficacy of watermelon rind extract (WMRE) as corrosion inhibitor for mild steel in HCl and H2SO4 solutions. The inhibition efficiency increased as the concentration of the extract increases. Potentiodynamic polarization results indicate that WMRE act as a mixed-type inhibitor. The values of effective capacitance obtained by utilizing the impedance parameters in both acidic media are in the range of double layer capacitance. Corrosion inhibition effect of WMRE can be attributed to the adsorption of constituents of WMRE onto the mild steel surface which can be approximated by Temkin adsorption isotherm model. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 247
页数：9
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