干旱区生态环境知识资源中心(Arid): Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater

Arid

DOI	10.1016/j.arabjc.2020.01.016
	Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater
	Ben Harb, Marwa 1; Abubshait, Samar 1; Etteyeb, Naceur 2,3; Kamoun, Madiha 1; Dhouib, Adnene 1
通讯作者	Ben Harb, Marwa
来源期刊	ARABIAN JOURNAL OF CHEMISTRY
ISSN	1878-5352
EISSN	1878-5379
出版年	2020
卷号	13 期号:3 页码:4846-4856
英文摘要	In reinforced concrete, a high alkaline medium, steel is commonly protected by formation a passive oxide film. Nevertheless, contamination with chlorides or carbonation causes the deterioration of protective film and the initiation of pitting corrosion. Hence, the need to enrich the fresh concrete solution with a good corrosion inhibitor. In accordance with green chemistry to evade toxicity and minimize waste, we have chosen to replace the usual inhibitors with an alternative not only ecological but also derived from biological wastes, in a perspective of circular economy emphasizing that waste can offer important compounds at an affordable price and easily available. In this context this work seeks to valorize the dried olive leaves extract as an inhibitor in alkaline chloride solution (pH 13). The targeted plant was grown in arid zones of Saudi Arabia and their leaves are usually disposed of as solid waste or animal feed. Four extraction solvents of different polarities were used; methanol, ethyl acetate, dichloromethane and hexane. The anticorrosive activity was performed using different electrochemical techniques; polarization curves, electrochemical impedance spectroscopy and Mott-Schottky analyses. The polarization studies proved that extract from olive leaves is a mixed type inhibitor in a solution of NaOH (0.1 M) + NaCl (0.5 M),with a predominant anodic effectiveness. The best inhibition of 91.9% is provided with methanol extract. GC-MS analysis showed the presence of compounds containing the heteroatoms N and O with the pi electrons which are responsible for the corrosion inhibition activity. The olive leaves have been found to be high in phenol and flavonoid content. Inhibition efficiency of the olive leaves extracts increases with the polarity of extraction solvents but also it appears that it depends on another factors. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.
英文关键词	Olive leaves Corrosion inhibitor Concrete Electrochemical techniques Phenol Flavonoid
类型	Article
语种	英语
国家	Saudi Arabia ; Tunisia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000518394300029
WOS关键词	MILD-STEEL REINFORCEMENT ; PHENOLIC-COMPOUNDS ; ANTIOXIDANT ACTIVITY ; PLANTS ; FILMS
WOS类目	Chemistry, Multidisciplinary
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314065
作者单位	1.Imam Abdulrahman Bin Faisal Univ, Coll Sci, Dept Chem, Dammam, Saudi Arabia; 2.Univ Gabes, High Inst Appl Biol Medenine, Km 22,5,Route El Jorf, Medenine 4111, Tunisia; 3.Univ TunisEl Manar, Natl Sch Engineers Tunis, COPROMET Grp, BP37, Tunis 1002, Tunisia
推荐引用方式 GB/T 7714	Ben Harb, Marwa,Abubshait, Samar,Etteyeb, Naceur,et al. Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater[J],2020,13(3):4846-4856.
APA	Ben Harb, Marwa,Abubshait, Samar,Etteyeb, Naceur,Kamoun, Madiha,&Dhouib, Adnene.(2020).Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater.ARABIAN JOURNAL OF CHEMISTRY,13(3),4846-4856.
MLA	Ben Harb, Marwa,et al."Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater".ARABIAN JOURNAL OF CHEMISTRY 13.3(2020):4846-4856.