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Process Management Based on Analysis of Surfactant Properties

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Published/Copyright: May 5, 2013
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 41 Issue 4

Abstract

One goal of optimising cleaning processes is the economic use of surfactant. To find the optimum concentration of active surfactants for a stable and high cleaning quality, a measurement technique to determine this concentration is required, in order to establish a correlation to the cleaning result.

The article introduces a modified surface tension measurement method to determine the concentration of active surfactants in process conditions. Based on this method, a new generation of inline tensiometers had been developed. These Instruments allow continuously monitoring the active surfactant concentration in a cleaning bath.

The article shows how to interpret the measurement results for the process control. Exemplarily at the use of online measurement in metal cleaning processes, the potential to provide a higher level of process quality control will be illustrated.

Kurzfassung

Ein Ziel der Optimierung wäßriger Reinigungsprozesse ist der sparsame Einsatz des Netzmittels (Tensid). Um die optimale Konzentration reinigungsaktiver Netzmittel für eine stabile und hohe Reinigungsqualität zu finden, ist eine Meßtechnik erforderlich, mit der diese Konzentration ermittelt und so ein Zusammenhang mit dem Reinigungsergebnis hergestellt werden kann.

Der Artikel stellt eine modifizierte Methode zum Bestimmen der Oberflächenspannung vor, mit der die Konzentration reinigungsaktiver Netzmittel unter Prozeßbedingungen ermittelt werden kann. Basierend auf dieser Methode wurde eine neue Generation von online Tensiometern entwickelt, welche ein kontinuierliches Überwachen der Konzentration reinigungsaktiver Netzmittel im Reinigungsbad erlauben.

Der Artikel zeigt, wie die Messergebnisse für die Prozeßkontrolle zu interpretieren sind. Am Beispiel des Einsatzes einer Online-Messtechnik in Prozessen der Metallreinigung wird das Potential für eine neue Qualitätsstufe der Prozeßüberwachung aufgezeigt.

Key words: Surface tension; surfactant concentration; monitoring; cleaning
Schlüsselwörter: Oberflächenspannung; Tensidkonzentration; Monitoring; Reinigung
∗ Correspondence to Volker König, Institut für Feinwerktechnik Technische Universität Dresden 01069 Dresden, Germany E-mail:

Dipl.-Ing. Volker König was born in 1973. In 1999 he graduated at the Dresden University of Technology, Institute of Electromechanical and Electronic Design. Until 2002 he was development engineer at SITA Messtechnik GmbH for surface tension devices. Since 2002 he is been engaged in research and development work on measurement technique for industrial cleaning processes at the Dresden University of Technology.

Prof. Dr.-Ing. Lothar Schulze was born in 1950. In 1976 he obtained his doctorate in the field of electronic design at the Dresden University of Technology. Until 1989 he was engaged in research and development work on low-voltage switchgear and was development manager for 10 years. He then worked until 1998 as an executive chief assistent at the Institute of Electromechanical and Electronic Design at Dresden University of Technology. He is been managing director of SITA Messtechnik GmbH in Dresden since 1996. Since 2003 he is been Honorarprofessor for product development at the Institute of Electromechanical and Electronic Design at the Dresden University of Technology.

Dipl.-Ing. Ralf Haberland was born in 1969. He graduated 1996 in the field of sensor technology in domestic washing machines at the Institute of Electromechanical and Electronic Design at the Dresden University of Technology. Today he is technical director of the SITA Messtechnik GmbH in Dresden and engaged in the development of laboratory and process measurement devices.

References

1 Steiner-Adler, A.: Untersuchungen zur Tensidverteilung in Reinigungsbädern in der Metall verarbeitenden Industrie. Dissertation TU Chemnitz, 2001.Search in Google Scholar

2 König, V., Schulze, L.: 1. Fortschrittsbericht zum Projekt Optimale Konstruktion der Prozessmesstechnik zum Erreichen einer hohen Verfahrenssicherheit bei Metallreinigungsprozessen. IFTE, TU Dresden, 2004.Search in Google Scholar

3 Matthes, E., Gottschalk, B., Fritsche, H.-B., Schmedding, T., Belger, N., Nitschke, T.: Neue Messtechnik senkt Betriebskosten. JOT6 (2003).10.1007/BF03243234Search in Google Scholar

4 Penz, O., Schaab, A., Brunn, K.: Technischer Brief „Methoden zur Bestimmung nichtionischer Tenside“. Firmenschrift www.surtec.de/TB/TB14D.pdf.Search in Google Scholar

5 Haberland, R.: Dimensionierung und Gestaltung von Oberflächenspannungsmessgeräten für den Prozess-Einsatz, Dissertation TU Dresden, eingereicht 2004.Search in Google Scholar

Received: 2004-7-26
Published Online: 2013-05-05
Published in Print: 2004-09-01

© 2004, Carl Hanser Publisher, Munich

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  2. Contents
  3. Abstracts
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  7. Testing of the Fabric Damage Properties of Bleach Containing Detergents
  8. Process Management Based on Analysis of Surfactant Properties
  9. GDCH Special Group Meeting
  10. Comparison between Interaction Forces at Air/Liquid and Solid/Liquid Interfaces in the Presence of Non-Ionic Surfactants
  11. Self-Organized Nano-Particles for Enhanced Wetting of Hard Surfaces∗∗
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https://doi.org/10.3139/113.100220
Keywords for this article
Surface tension; surfactant concentration; monitoring; cleaning

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Abstracts
  4. Abstracts
  5. Application
  6. A Protocol to Examine the Colour Damage Profile of Bleach Containing Detergents
  7. Testing of the Fabric Damage Properties of Bleach Containing Detergents
  8. Process Management Based on Analysis of Surfactant Properties
  9. GDCH Special Group Meeting
  10. Comparison between Interaction Forces at Air/Liquid and Solid/Liquid Interfaces in the Presence of Non-Ionic Surfactants
  11. Self-Organized Nano-Particles for Enhanced Wetting of Hard Surfaces∗∗
  12. Environmental Care and Consumer Protection – Example for the Official Survey of Laundry Detergents and Cleansing Agents
  13. Physical Chemistry
  14. Microemulsions Formed by a Catanionic Surfactant or by an Ionic Surfactant with an Organic Counterion
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