Effect of Helichrysum italicum on the Corrosion of Copper in Simulated Acid Rain Solution

IF 1.6 4区 生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Z. Pilić, Ivana Martinović
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引用次数: 7

Abstract

The inhibition of copper corrosion by Helichrysum italicum extract (HI) in simulated acid rain was investigated using electrochemical techniques. Results indicate an increase in corrosion inhibition efficiency with the HI extract concentration. The inhibitive process was assumed to occur via adsorption of the extract on the metal surface. The thermodynamic data indicated physical adsorption and followed the Freundlich isotherm. The effect of temperature on the copper corrosion was studied. The value of the activation energy confirmed physisorption of extract molecules on the copper surface. The concentration of Cu ions released into solution, measured by atomic absorption spectrometry, was in accordance with the electrochemical results.
意大利蜡菊对模拟酸雨溶液中铜腐蚀的影响
采用电化学技术研究了意大利蜡菊提取物(HI)对模拟酸雨中铜的缓蚀作用。结果表明,随着HI萃取物浓度的增加,缓蚀效果有所提高。假设抑制过程是通过萃取物在金属表面的吸附发生的。热力学数据显示为物理吸附,遵循Freundlich等温线。研究了温度对铜腐蚀的影响。活化能的值证实了萃取物分子在铜表面的物理吸附。原子吸收光谱法测定的Cu离子释放到溶液中的浓度与电化学结果一致。
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来源期刊
Chemical and Biochemical Engineering Quarterly
Chemical and Biochemical Engineering Quarterly 工程技术-工程:化工
CiteScore
2.70
自引率
6.70%
发文量
23
审稿时长
>12 weeks
期刊介绍: The journal provides an international forum for presentation of original papers, reviews and discussions on the latest developments in chemical and biochemical engineering. The scope of the journal is wide and no limitation except relevance to chemical and biochemical engineering is required. The criteria for the acceptance of papers are originality, quality of work and clarity of style. All papers are subject to reviewing by at least two international experts (blind peer review). The language of the journal is English. Final versions of the manuscripts are subject to metric (SI units and IUPAC recommendations) and English language reviewing. Editor and Editorial board make the final decision about acceptance of a manuscript. Page charges are excluded.
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