Pemanfaatan Ekstrak Biji Feun Kase (Thevetia peruviana) sebagai Inhibitor Korosi Logam Seng dalam Media HCl

Matius Stefanus Batu, M. M. Kolo, Adolvina Kono
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Abstract

Feun Kase seed extract can be used as a corrosion inhibitor on zinc metal in HCl solution. This study aims to determine the secondary metabolites contained in Feun Kase seed extract, inhibition efficiency and corrosion rate, and surface morphology of zinc metal in the inhibition process using Feun Kase seed extract in HCl media. Feun Kase seed extract was obtained by maceration extraction using methanol. In the corrosion inhibition test, the concentration and temperature variations were carried out to determine the effect on the inhibition efficiency and the corrosion rate per year. The results showed that the methanol extract of Feun Kase seeds contained secondary metabolites of alkaloids, flavonoids and saponins. The optimum inhibition efficiency was obtained at an inhibitor concentration of 30 ppm of 82.70% with a corrosion rate of 5.80 mm/year and at a temperature of 35ºC of 75.84% with a corrosion rate of 7.28 mm/year in the test of increasing the temperature of the corrosion medium. The morphological analysis of the zinc plate using the SEM instrument showed that the zinc plate without surface treatment (not immersed in HCl media) was still smooth. This is indicated by the surface of the zinc plate which is still clearly visible because it has not been affected by the corrosion medium. The zinc plate when immersed in HCl media, is damaged which is indicated by the presence of pores or holes. Zinc plate when added with Feun Kase seed extract in HCl media, the zinc surface was damaged but the damage was not as prominent as in HCl media without using an inhibitor.
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Feun Kase籽的利润剂(Thevetia peruviana)是HCl中锌金属腐蚀的抑制剂
凤仙花种子提取物可作为HCl溶液中锌金属的缓蚀剂。本研究旨在测定Feun Kase种子提取物在HCl介质中缓蚀过程中所含的次生代谢物、缓蚀效率和缓蚀速率以及金属锌的表面形貌。采用甲醇浸渍法提取凤仙花种子提取物。在缓蚀试验中,进行了浓度和温度的变化,以确定对缓蚀效率和年腐蚀速率的影响。结果表明,枫香种子甲醇提取物中含有生物碱、黄酮类化合物和皂苷等次生代谢产物。在提高腐蚀介质温度的条件下,缓蚀剂浓度为30 ppm,占82.70%,腐蚀速率为5.80 mm/年;温度为35℃,占75.84%,腐蚀速率为7.28 mm/年,缓蚀效果最佳。利用扫描电镜对锌板进行形貌分析表明,未经表面处理(未浸在HCl介质中)的锌板仍然光滑。锌板的表面仍然清晰可见,因为它没有受到腐蚀介质的影响。当锌板浸在盐酸介质中时,会被损坏,这是由孔隙或孔洞的存在所表明的。锌板在HCl介质中加入Feun Kase种子提取物后,锌表面受到损伤,但损伤程度不如未添加抑制剂的HCl介质中明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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审稿时长
12 weeks
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