New type of dry substances content meter using microwaves for application in biogas plants.
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%.
Nacke
Thomas
T
Institute of Bioprocessing and Analytical Measurement Techniques, Rosenhof, 37308 Heilbad Heiligenstadt, Germany. thomas.nacke@iba-heiligenstadt.de
Brückner
Kathleen
K
Göller
Arndt
A
Kaufhold
Sebastian
S
Nakos
Xenia
X
Noack
Stephan
S
Stöber
Heinrich
H
Beckmann
Dieter
D
D000383:Agriculture / Q000379:methods; D000465:Algorithms; D001185:Artificial Intelligence; D001704:Biopolymers / Q000032:analysis* / Q000737:chemistry*; D003890:Desiccation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000737:chemistry; D007220:Industrial Waste / Q000032:analysis*; D008872:Microwaves; D009862:Online Systems; D011208:Powders / Q000032:analysis / Q000737:chemistry; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods
D001704:Biopolymers; D005740:Gases; D007220:Industrial Waste; D011208:Powders