Startseite Acrylic Acid-Allylpolyethoxy Carboxylate Copolymer Dispersant for Calcium Carbonate and Iron(III) Hydroxide Scales in Cooling Water Systems
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Acrylic Acid-Allylpolyethoxy Carboxylate Copolymer Dispersant for Calcium Carbonate and Iron(III) Hydroxide Scales in Cooling Water Systems

  • Guangqing Liu , Jingyi Huang , Yuming Zhou , Qingzhao Yao , Lei Ling , Peixin Zhang , Change Fu , Wendao Wu , Wei Sun und Zhengjun Hu
Veröffentlicht/Copyright: 1. März 2013
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Tenside Surfactants Detergents
Aus der Zeitschrift Tenside Surfactants Detergents Band 49 Heft 3

Abstract

A novel environmentally friendly type of calcium carbonate and iron(III) scale inhibitor (ALn) was synthesized. The anti-scale property of the Acrylic acid-allylpolyethoxy carboxylate copolymer (AA-APELn or ALn) towards CaCO3 and iron(III) in the artificial cooling water was studied through static scale inhibition tests. The observation shows that both calcium carbonate and iron(III) inhibition increase with increasing the degree of polymerization of ALn from 5 to 15, and the dosage of ALn plays an important role on calcium carbonate and iron(III)-inhibition. The effect on formation of CaCO3 was investigated with a combination of scanning electronic microscopy (SEM), Transmission electron microscopy (TEM), X-ray powder diffraction (XRD) analysis and Fourier transform infrared spectrometer, respectively. The results showed that the ALn copolymer not only influences calcium carbonate crystal morphology and crystal size but also the crystallinity. The crystallization of CaCO3 in the absence of inhibitor was rhombohedral calcite crystal, whereas a mixture of calcite with vaterite crystals was found in the presence of the ALn copolymer. Inhibition mechanism is proposed that the interactions between calcium or iron ions and polyethylene glycol (PEG) are the fundamental impetus to restrain the formation of the scale in cooling water systems.

Kurzfassung

Ein neuer, umweltfreundlicher Inhibitor für Ablagerungen von Calciumcarbonat und Eisen(III)-hydroxid (ALn) wurde synthetisiert. Die Entkalkungseigenschaften des Acrylsäure-Allylpolyethoxicarboxilat-Copolymers (AA-APELn oder ALn) gegenüber Calciumcarbonat und Eisen(III)hydroxid in künstlichem Kühlwasser wurde mit Hilfe statischen Entkalker-Tests untersucht. Es wurde beobachtet, dass die Hemmung der Calciumcarbonat- und der Eisen(III)-hydroxid-Entstehung mit steigendem Grad der Polymerisierung des ALn von 5 nach 15 zunimmt. Ebenso hat die Dosierung des ALn eine große Bedeutung auf die Vermeidung der Calciumcarbonat- und Eisen(III)hydroxid-Entstehung. Der Einfluss auf die Bildung von CaCO3 wurde mit Hilfe der kombinierten Verfahren Rasterelektronenmikroskopie (REM), Transmissionselektronenmikroskopie (TEM), Röntgenbeugungsanalyse (XRD) und Fouriertransformspektrometrie (FTIR) untersucht. Die Ergebnisse zeigen, dass das ALn-Copolymer nicht nur die Kristallmorphologie und die Kristallgröße des Calciumcarbonats beeinflusst, sondern auch die Kristallinität. Erfolgt die Kristallisierung von CaCO3 in Abwesenheit des Inhibitors, so entsteht das rhomboedrische Calcit. In Gegenwart des ALn-Copolymers wird ein Mischkristall aus Calcit und Vaterit gebildet. Beim vorgeschlagenen Inhibierungsmechanismus sind die Wechselwirkungen zwischen Calcium- bzw. Eisenionen und dem Polyethylenglykol (PEG) die grundlegende Kraft, um die Bildung von Ablagerungen in Kühlwassersystemem zu beschränken.

Key words:: Scale inhibitor; environmentally friendly; calcium carbonate; disperse iron(III) hydroxide; cooling water systems
Stichwörter:: Kalkinhibitor; umweltfreundlich; Calciumcarbonat; disperses Eisen(III)hydroxid; Kühlwassersysteme
3 Prof. Yuming Zhou, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China. E-mail:

Guangqing Liu was born in 1979. He is a doctoral student at Southeast University. His main field of research is applications of water soluble polymers in industrial water systems and green chemical.

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.

Jingyi Huang was born in 1976. She is a teacher at Southeast University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

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

Lei Ling was born in 1987. He is a postgraduate at Southeast University. His main scientific interest has been the synthesis and properties of environment friendly materials.

Peixin Zhang was born in 1966. He is a doctoral student at Southeast University. His main field of research is applications of water soluble polymers in industrial water systems and green chemical.

Change Fu was born in 1971. She is a doctoral student at Southeast University. She obtained her master degree in Hunan University. Her main field of research is applications of water soluble polymers in industrial water systems and green chemical.

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.

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. His field of research is synthesis and application of surfactants.

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Received: 2011-09-28
Revised: 2011-12-26
Published Online: 2013-03-01
Published in Print: 2012-05-01

© 2012, Carl Hanser Publisher, Munich

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. 7th European Detergents Conference (EDC)
  6. Biosurfactants as Antimicrobial Ingredients for Cleaning Products and Cosmetics
  7. Scientific Results and Economic Effects from the Centre for Surfactants Based on Natural Products (SNAP)
  8. Application
  9. Preparation and Performance of Catanionic Surfactants
  10. Environmental Chemistry
  11. Acrylic Acid-Allylpolyethoxy Carboxylate Copolymer Dispersant for Calcium Carbonate and Iron(III) Hydroxide Scales in Cooling Water Systems
  12. Novel Surfactants
  13. Lyotropic Liquid Crystals Formed in Brij35/Copolymer/Water System
  14. Physical Chemistry
  15. Micellization of Alkyl Trimethyl Ammonium Bromides in Aqueous Solutions–Part 1: Critical Micelle Concentration (CMC) and Ionization Degree
  16. Review
  17. Electrical Properties of PANI/Chalcogenide Junctions Doped with Ionic Liquids Anions
  18. Synthesis
  19. Synthesis of Quaternary Derivatives of Ortho-Coco Di-Amido Toluene and Investigation of these Compounds as Cationic Bitumen Emulsifier
  20. Synthesis and Surface Activity of Guerbet Betaine Surfactants with Ethylene Oxide Groups
  21. Research Group Portrait
  22. Investigations in the Stranski-Laboratorium of the TU Berlin – Physical Chemistry of Colloidal Systems – Going Towards Complexity and Functionality
https://doi.org/10.3139/113.110185
Schlagwörter für diesen Artikel
Scale inhibitor; environmentally friendly; calcium carbonate; disperse iron(III) hydroxide; cooling water systems

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. 7th European Detergents Conference (EDC)
  6. Biosurfactants as Antimicrobial Ingredients for Cleaning Products and Cosmetics
  7. Scientific Results and Economic Effects from the Centre for Surfactants Based on Natural Products (SNAP)
  8. Application
  9. Preparation and Performance of Catanionic Surfactants
  10. Environmental Chemistry
  11. Acrylic Acid-Allylpolyethoxy Carboxylate Copolymer Dispersant for Calcium Carbonate and Iron(III) Hydroxide Scales in Cooling Water Systems
  12. Novel Surfactants
  13. Lyotropic Liquid Crystals Formed in Brij35/Copolymer/Water System
  14. Physical Chemistry
  15. Micellization of Alkyl Trimethyl Ammonium Bromides in Aqueous Solutions–Part 1: Critical Micelle Concentration (CMC) and Ionization Degree
  16. Review
  17. Electrical Properties of PANI/Chalcogenide Junctions Doped with Ionic Liquids Anions
  18. Synthesis
  19. Synthesis of Quaternary Derivatives of Ortho-Coco Di-Amido Toluene and Investigation of these Compounds as Cationic Bitumen Emulsifier
  20. Synthesis and Surface Activity of Guerbet Betaine Surfactants with Ethylene Oxide Groups
  21. Research Group Portrait
  22. Investigations in the Stranski-Laboratorium of the TU Berlin – Physical Chemistry of Colloidal Systems – Going Towards Complexity and Functionality
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