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Parametric Optimization and Thermo-dynamic Studies on the Influence of Electrolytes on Sodium Salicylate in Aqueous Solution

  • Kiran Pawar , Meghal A. Desai and Jigisha Parikh
Published/Copyright: September 9, 2013
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 50 Issue 4

Abstract

Hydrotropes (amphiphiles) start to aggregate at a certain minimum concentration known as the minimum hydrotrope concentration (MHC), above which an appreciable solubilization of insoluble compounds in aqueous solution is observed. However, the MHC values are very high, thus, limiting the applications of hydrotropes. The salts are found to increase the association tendency of hydrotropes and reduction in the MHC. The present study discusses the effect of various electrolytes (Na+, Mg2+ and K+ series) on the behavior of sodium salicylate at different temperatures. Design of experiment was employed to optimize the process parameters. Furthermore, thermodynamic parameters were investigated to observe the stability of the aggregates at higher temperatures.

Kurzfassung

Hydrotope (Amphiphile) beginnen ab einer bestimmten Minimumkonzentration, die als Minimumhydroptrop-Konzentration (MHK) bekannt ist, zu aggregieren. Oberhalb dieser Konzentration wird eine beträchtliche Löslichkeit von unlöslichen Verbindungen in wässriger Lösung festgestellt. Die MHK-Werte sind jedoch sehr hoch, was die Anwendung von Hydrotropen einschränkt. Es wurden Salze gefunden, die die Assoziation von Hydrotropen steigern und die MHK herabsetzen. Die vorliegende Untersuchung diskutiert den Einfluss verschiedener Elektrolyte (Na+-, Mg2+- und K+-Salze) auf das Verhalten von Natriumsalicylat bei unterschiedlichen Temperaturen. Ein Versuchsdesignverfahren wurde für die Optimierung der Verfahrensparameter verwendet. Des Weiteren wurden thermodynamische Parameter untersucht, um die Stabilität der Aggregate bei höheren Temperaturen zu beobachten.

Key words: Electrolyte; design of experiment; minimum hydrotrope concentration (MHC); relative viscosity; sodium salicylate
Stichwörter: Elektrolyte; Versuchsdesign; Minimumhydroptrop-Konzentration (MHK); relative Viskosität; Natriumsalicylat
1 Dr. Jigisha Parikh, Department of Chemical EngineeringSardar Vallabhbhai National Institute of TechnologySurat-395007, GujaratIndia, Tel.: 91-261-2201689, Fax: 91-261-2201641, E-Mail:

Dr. Jigisha Parikh is serving as Associate Professor at Chemical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India. She is having more than 15 years of experience in the academics and about four years industrial experience. She is working in this area since last ten years, also works in the area of biofuel and environment engineering. She has more than 30 peer reviewed international journal publication.

Meghal A. Desai is a faculty member Chemical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India. He is an active researcher in this area since three years. Apart from working in the area of amphiphillic compounds, he is involved in the extraction of phytochemicals from the plant materials using various extraction techniques.

Kiran Pawar is the research student at Chemical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India.

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Received: 2012-7-11
Revised: 2013-4-18
Published Online: 2013-09-09
Published in Print: 2013-07-15

© 2013, Carl Hanser Publisher, Munich

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https://doi.org/10.3139/113.110262
Keywords for this article
Electrolyte; design of experiment; minimum hydrotrope concentration (MHC); relative viscosity; sodium salicylate

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. Surface and Interfacial Performance of Unsaturated Octadecyl Carboxybetaine
  7. Synthesis of Thermoresponsive SiO2 Composite Modified by Nonionic Organosilicone Surfactant
  8. Combination of Best Promoter and Micellar Catalyst for Chromic Acid Oxidation of D-Mannitol to Mannose in Aqueous Media
  9. Antimicrobial Efficacy of Hygiene Rinsers under Consumer-Related Conditions
  10. Environmental Chemistry
  11. How Effective are Alternative Ways of Laundry Washing?
  12. Novel Surfactants
  13. Foaming Behavior of Dialdehyde Starch Schiff-base Derivatives
  14. Novel Diphenyl Methane Based Quaternary Ammonium Surfactants: Synthesis, Surface Properties and Antimicrobial Activity
  15. Physical Chemistry
  16. Interaction of Cationic CTAB Surfactant with Curcumin, an Anticarcinogenic Drug: Spectroscopic Investigation
  17. Parametric Optimization and Thermo-dynamic Studies on the Influence of Electrolytes on Sodium Salicylate in Aqueous Solution
  18. Effect of Cationic Surfactant on the Oxidation of Galactose by N-Bromophthalimide in the Presence of Acidic Medium: A Kinetic and Mechanistic Study
  19. News
  20. Retirement of Professor Ulrich Buller
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