Synthesized polyaspartic acid derivatives as corrosion and scale inhibitors in desalination operations. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Migahed, M.A.; Rashwan, S.M.; Kamel, M.M.; Habib, R.E.
• Editors: Zhang, Zhibing
• Is Part Of: Cogent engineering. Volume 4:Issue 1(2017)
• Publication Date: 2017-01-01
• Subjects: PASP derivatives -- Val-PASP -- Leu-PASP -- corrosion -- scale -- FTIR -- 1HNMR -- EIS -- SEM -- EDX; Engineering -- Periodicals; Technology -- Periodicals; Engineering; Technology; Periodicals; 620
• DOI: 10.1080/23311916.2017.1366255
• Languages: English
• ISSNs: 2331-1916

Abstract

Abstract: The present work investigated the preparation of valine of polyaspartic acid (Val-PASP) and leucine of poly aspartic acid (Leu-PASP) by using polysuccinimide. PASP compounds were used as corrosion and scale inhibitors. The prepared derivatives in this study were characterized by using Fourier transform infrared spectroscopy and nuclear magnetic resonance 1 HNMR. The electrochemical behavior of the synthesized compounds was studied on carbon steel surface using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The morphology of the C-steel specimens was surveyed using scanning electron microscopy and energy dispersive analysis of X-rays investigations. Scale agglomeration inhibition was evaluated using different concentrations of the inhibitors using standard scale test method. The highest corrosion inhibition efficiency for Val-PASP and Leu-PASP reaches 86.94 and 88.62% respectively at 250 ppm concentration, while their scale inhibition efficiency reaches 92.3 and 94.1% respectively at 125 ppm concentration.