Designed Orthogonal Sample Spiking Based Calibrations for Quantitative Liquid Phase Measurements with near Infrared Spectroscopy in an Anaerobic Digestion Process

2013 ◽  
Vol 21 (1) ◽  
pp. 11-22 ◽  
Author(s):  
John Dahlbacka ◽  
Tom Lillhonga ◽  
Marco Döring
Keyword(s):  
Infrared Spectroscopy ◽  
Anaerobic Digestion ◽  
Liquid Phase ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Phase Measurements ◽  
Anaerobic Digestion Process ◽  
Digestion Process

Use of near infrared spectroscopy in monitoring of volatile fatty acids in anaerobic digestion

2009 ◽  
Vol 60 (2) ◽  
pp. 339-346 ◽  
Author(s):  
H. Fabian Jacobi ◽  
Christian R. Moschner ◽  
Eberhard Hartung
Keyword(s):  
Fatty Acids ◽  
Acetic Acid ◽  
Infrared Spectroscopy ◽  
Anaerobic Digestion ◽  
Propionic Acid ◽  
Near Infrared Spectroscopy ◽  
Volatile Fatty Acids ◽  
Near Infrared ◽  
Biogas Production ◽  
Biogas Plants

Recently biogas production from agricultural sources has rapidly developed. Therefore the demands on biogas plants to optimise the efficiency of the anaerobic digestion (AD) process have grown immensely. At present there is no online-supervision tool available to monitor the AD process, but costly and time-consuming chemical analyses are necessary. The possibility to use near-infrared spectroscopy (NIRS) in order to track relevant process parameters like total volatile fatty acids (VFA), acetic acid and propionic acid was investigated in the present research project. A NIR-sensor was integrated into a full-scale 1 MW biogas plant and NIR-spectra of the fermenter contents were recorded semi-continuously for 500 days. Weekly samples were taken and analysed for the above mentioned parameters. Calibration models were calculated, capable of following these parameters: VFA (r2=0.94), acetic acid (r2=0.69), propionic acid (r2=0.89).

Fast characterization of solid organic waste content with near infrared spectroscopy in anaerobic digestion

2017 ◽  
Vol 59 ◽  
pp. 140-148 ◽  
Author(s):  
Cyrille Charnier ◽  
Eric Latrille ◽  
Julie Jimenez ◽  
Margaux Lemoine ◽  
Jean-Claude Boulet ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Anaerobic Digestion ◽  
Near Infrared Spectroscopy ◽  
Organic Waste ◽  
Near Infrared
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