TITLE

New type of dry substances content meter using microwaves for application in biogas plants

AUTHOR(S)
Nacke, Thomas; Brückner, Kathleen; Göller, Arndt; Kaufhold, Sebastian; Nakos, Xenia; Noack, Stephan; Stöber, Heinrich; Beckmann, Dieter
PUB. DATE
November 2005
SOURCE
Analytical & Bioanalytical Chemistry;Nov2005, Vol. 383 Issue 5, p752
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Dry substances (DS) are an important index for monitoring and controlling anaerobic co-digestion in biogas plants. We have developed and tested an online meter that measures suspended solids by means of the reflection coefficient of an exiting microwave signal, which is dependent on the dielectric properties of the suspensions. Intelligent models based on partial least squares regression (PLSR) and artificial neural network (ANN) for calibration allow exact and reproducible measurements under different circumstances. This measuring method is appropriate for contactless and online measurements of dry substance contents in biogas plants in a large range from 2–14%.
ACCESSION #
18755141

 

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