کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
727210 1461509 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The capability of ultrafiltrated alkaline and organosolv oil palm (Elaeis guineensis) fronds lignin as green corrosion inhibitor for mild steel in 0.5 M HCl solution
ترجمه فارسی عنوان
قابلیت قلیایی ultrafiltrated و روغن نخل organosolv (نخل روغنی guineensis) برگ لیگنین بعنوان بازدارنده های خوردگی سبز برای فولاد به 0.5 اسید سولفوریک و کلریدریک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی


• Fractionation of alkaline and organosolv lignins via ultrafiltration.
• All lignin fractions show good inhibitive properties for mild steel in HCl.
• Soda lignin fraction gave better inhibition performance than Kraft and organosolv fractions.
• The adsorption process accords with the Langmuir adsorption model.

The inhibitive effect of ultrafiltrated oil palm fronds (OPF) lignins on the corrosion of mild steel in 0.5 M HCl solution has been investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PP) and weight loss measurement. The presence of smaller lignin fractions reduces remarkably the corrosion rate of mild steel. The highest corrosion inhibition efficiency for all ultrafiltrated lignins were attained at maximum concentration of 500 ppm (IEP.Soda: 87% > IEP.Organosolv: 83% > IEP.Kraft: 81%). The results from this corrosion test clearly reveal that all ultrafiltrated lignins behaved as a mixed-type inhibitor with predominant anodic (organosolv lignin) or cathodic (alkaline lignin) effectiveness. It was deduced that the inhibition process was spontaneous and the inhibitors were mainly physically adsorbed onto the mild steel surface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 78, January 2016, Pages 90–103
نویسندگان
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