Accessible Requires Authentication Published by De Gruyter November 13, 2017

Preparation and Application of Double-Hydrophilic Copolymer as Scale and Corrosion Inhibitor for Industrial Water Recycling

Herstellung und Anwendung von doppelt-hydrophilem Copolymer als Kesselstein- und Korrosionsinhibitor zur Wiederverwendung industrieller Abwässer
Tiantian Wang, Yuming Zhou, Qingzhao Yao, Ao Zhang, Jun Li, Yiyi Chen, Xinye Zhu, Xiangnan Chen, Qiuli Nan, Mingjue Zhang, Wendao Wu and Wei Sun

Abstract

A novel double-hydrophilic copolymer (acrylic acid-isoprenyl polyethoxy carboxylate, AA-TPEL) is synthesized and the structural properties are identified by FT-IR, 1HNMR and GPC analyses. The inhibitory behavior of the copolymer is determined by using a static scale inhibition method. It is shown that AA-TPEL exhibits an excellent ability to control the formation of CaCO3 scale with an inhibition efficiency of 88.67 % at the 8 mg L–1, and it still maintains a superior efficiency even at increasing solution temperature, pH, and Ca2+ concentration. Weight loss test, potentiodynamic polarization and electrochemical impedance spectroscopy are applied to investigate the inhibition efficiency on mild steel corrosion. All measurements show that, AA-TPEL acts as an efficient corrosion inhibitor and also displays a superior ability to prevent the corrosion of mild steel with approximately 83.21 % inhibition efficiency at the low level of 10 mg L–1. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) are used to characterize the surface morphology of CaCO3 and steel.

Kurzfassung

Ein neues doppelt-hydrophiles Copolymer (Acrylsäure-Isoprenylpolyethoxycarboxylat, AA-TPEL) wurde synthetisiert und die strukturellen Eigenschaften werden durch FT-IR-, 1HNMR- und GPC-Analysen identifiziert. Das Inhibiervermögen des Copolymers wurde mit der Methode der statischen Kesselsteinbildung bestimmt. Es wurde gezeigt, dass AA-TPEL die CaCO3-Kesselsteinbildung mit einer 88,67 %-igen Inhibitionseffizienz bei 8 mg L–1 kontrolliert und dass das Copolymer trotz ansteigender Lösungstemperatur, zunehmendem pH-Wert und Ca2+-Konzentration weiterhin einen überlegenen Wirkungsgrad hat. Der Gewichtsverlusttest, die potentiodynamische Polarisation und die elektrochemische Impedanzspektroskopie wurden eingesetzt, um die hemmenden Eigenschaften bei der Korrosion von Weichstahl zu untersuchen. Alle Messungen zeigten, dass AA-TPEL als effizienter Korrosionsinhibitor wirkt und auch bei niedrigem Gehalt von 10 mgL–1 die Korrosion von Weichstahl mit einer etwa 83,21 % Inhibitionseffizienz verhindert. Rasterelektronenmikroskopie (SEM) und Röntgenpulverdiffraktion (XRD) wurden zur Charakterisierung der Oberflächenmorphologie von CaCO3 und Stahl verwendet.


*Correspondence address, Prof. Dr. Yuming Zhou, Prof. Dr. Qingzhao Yao, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P. R. China, Tel.: +86-25-52090617, Fax: +86-25-52090617, E-Mail: (Y. Zhou), E-Mail: (Q. Yao)

TianTian Wang was born in 1992. She is a postgraduate at Southeast University. Her main field of research is applications of water treatment agent in industrial cooling water systems.

Prof. Yuming Zhou was born in 1964. He graduated from Nanjing University in 1986. He obtained his PhD in Department of Biomedical Southeast University. His research interests lie in organic material, fine chemicals and environmental protection. At the moment is associate dean of the School of Chemistry and Chemical Engineering Southeast University.

Qingzhao Yao was born in 1973. She is an associate professor at Southeast University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Xinye Zhu is a student of Nanjing Foreign Language School. Her English is pretty good.

Ao Zhang was born in 1992. He is a postgraduate at Southeast University. His main scientific interest has been the synthesis and properties of environment friendly materials.

Jun Li was born in 1993. He is a postgraduate at Southeast University. His main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Yiyi Chen was born in 1990. She is a doctoral student at Southeast University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Xiangnan Chen was born in 1992. She is an undergraduate at Cheng Xian College, Southeast University.

Qiuli Lan was born in 1973. She is a teacher at Cheng Xian College, Southeast University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Mingjue Zhang was born in 1973. She is a teacher at Cheng Xian College, Southeast University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Wendao Wu was born in 1985. He received his bachelor degree in applied chemical from Southeast University in 2008. He is now working at Jiangsu Jianghai Chemical Co., Ltd., Changzhou China.

Wei Sun was born in 1979. He received his bachelor degree in applied chemical from Nanjing University in 2004. He is now working at Jiangsu Jianghai Chemical Co., Ltd., Changzhou China. His main field of research is synthesis and application of surfactants.


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Received: 2016-09-14
Accepted: 2017-02-28
Published Online: 2017-11-13
Published in Print: 2017-11-15

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