Near-infrared spectroscopy for process control and optimization of biogas plants

2010 ◽  
Vol 10 (6) ◽  
pp. 537-543 ◽  
Author(s):  
Stefan Luck ◽  
Gabriele Büge ◽  
Holger Plettenberg ◽  
Martin Hoffmann
Keyword(s):  
Infrared Spectroscopy ◽  
Process Control ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Biogas Plants

Application of Near-infrared Spectroscopy in Batch Process Control

2009 ◽  
Vol 42 (11) ◽  
pp. 750-755
Author(s):  
H. Lin ◽  
O. Marjanovic ◽  
B. Lennox ◽  
A. Shamekh
Keyword(s):  
Infrared Spectroscopy ◽  
Process Control ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Batch 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).

Online Process Control of a Pharmaceutical Intermediate in a Fluidized-Bed Drier Environment Using Near-Infrared Spectroscopy

2010 ◽  
Vol 82 (10) ◽  
pp. 4209-4215 ◽  
Author(s):  
Julia Märk ◽  
Martin Karner ◽  
Max Andre ◽  
Jochen Rueland ◽  
Christian W. Huck
Keyword(s):  
Infrared Spectroscopy ◽  
Process Control ◽  
Fluidized Bed ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Online Process

Near infrared spectroscopy as a tool for in-line control of process and material properties of PLA biopolymer

2015 ◽  
Vol 82 (12) ◽  
Author(s):  
Wolfgang Becker ◽  
Emilia Inone-Kauffmann ◽  
Wilhelm Eckl ◽  
Norbert Eisenreich
Keyword(s):  
Infrared Spectroscopy ◽  
Process Control ◽  
Near Infrared Spectroscopy ◽  
Material Properties ◽  
Near Infrared ◽  
Process Development ◽  
Nir Spectroscopy ◽  
Polymer Processing ◽  
Analytical Tool ◽  
Quality Improvements

AbstractNear infrared (NIR) spectroscopy has become an analytical tool for material and process control, leading to substantial quality improvements in the output material. In the field of polymer processing NIR spectroscopy has been increasingly applied for on-/in-line monitoring, mainly for lab-scale process development but also for the production of high-value materials. For this paper the bio-polymer polylactide (PLA) was investigated by NIRS in the range of 1.2 to 2.4 μm, in order to identify modifications induced by additives of nanofil

scholarly journals Process analytical technology tools for process control of roller compaction in solid pharmaceuticals manufacturing

2020 ◽  
Vol 70 (4) ◽  
pp. 443-463 ◽  
Author(s):  
Aleša Dular Vovko ◽  
Franc Vrečer
Keyword(s):  
Infrared Spectroscopy ◽  
Process Control ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Process Analytical Technology ◽  
Imaging Techniques ◽  
Thermal Effusivity ◽  
Chemical Imaging ◽  
Roller Compaction ◽  
Analytical Technology

AbstractThis article presents an overview of using process analytical technology in monitoring the roller compaction process. In the past two decades, near-infrared spectroscopy, near-infrared spectroscopy coupled with chemical imaging, microwave resonance technology, thermal effusivity and various particle imaging techniques have been used for developing at-, off-, on- and in-line models for predicting critical quality attributes of ribbons and subsequent granules and tablets. The common goal of all these methods is improved process understanding and process control, and thus improved production of high-quality products. This article reviews the work of several researchers in this field, comparing and critically evaluating their achievements.

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