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Evaluation of an electronic tongue for monitoring the microbial status of a pulp and paper process
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
2001 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Unspecific sensors for both liquid and gas phase have been developed at the Department of Physics and Measurement Technology, Linköpings Universitet. These systems, together with appropriate signal processing and data evaluation methods, have been proven to work in many different applications. The aim of the present study was to assess wether the liquid sensor system, "the electronic tongue" could detect microbiological growth in a changing process environment and also rugged enough to withstand the harshness of that environment. Experimental work was conducted under circumstances similar to those in the process. Pulp from a cartonboard production plant was used for microbiological growth studies where measurements with the liquid sensor was compared to the reference methods, viable count and adenosine triphosphate (ATP). Partial least squares (PLS) was used to build prediction models from the sensor system data. The errors of these methods were generally on a level with those of the viable count metod, and above those of the ATP method. In another study, three separate systems were used to measure on identical samples of an experimental design series. It could be concluded that there were relatively small variations in the error of prediction of the PLS models from the three different systems, and that data from one electronic tongue system might be predicted by a model built on another system, indicating good repeatability of the system data and sensor body manufacturing. Since the techology was developed in the late -90s, much work was focused on refining the measurement technology including methods, software, hardware, and data analysis methods.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet , 2001. , p. 37
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 900
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-145959Local ID: LiU-TEK-LIC-2001:37ISBN: 9173731072 (print)OAI: oai:DiVA.org:liu-145959DiVA, id: diva2:1194679
Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-11-20Bibliographically approved

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Johnson, Håkan

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf