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Online-measurement systems for agricultural and industrial AD plants – A review and practice test

  • Online-measurement systems for AD plants in general are crucial to allow for detailed and comprehensive process monitoring and provide a basis for the development and practical application of process optimisation and control strategies. Nevertheless, the online measurement of key process variables such as Volatile Fatty Acids (VFA) and Total Alkalinity (TA) has proven to be difficult due to extreme process conditions. High Total Solids (TS) concentrations and extraneous material often damage the sensors or have a strong negative impact on measurement quality and long-term behaviour. Consequently, there is a need for new robust and accurate online-measurement systems. The purpose of this paper is to give an overview of existing online-measurement systems, to present the current state of research and to show the results of practice tests at an agricultural and industrial AD plant. It becomes obvious that a broad variety of measurement solutions have been developed over the past few years, but that the main problem is the upscaling from lab-scale to practical application at full-scale AD plants. Results from the practice tests show that an online-measurement of pH, ORP, TS is possible.

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Verfasserangaben:Christian Wolf, Daniel Gaida, Michael Bongards
Titel des übergeordneten Werkes (Deutsch):Kompendium der Forschungsgemeinschaft :metabolon 2012-2014
Angaben zur Erstveröffentlichung:Kompendium der Forschungsgemeinschaft :metabolon 2012-2014, 2014, S. 52-64
Dokumentart:Teil eines Buches (Kapitel)
Datum des Hochladens:29.05.2015
Freies Schlagwort / Tag:Biogas; Industrial biogas plant; Online-measurement; Total alkalinity; Volatile fatty acids
Fakultäten und Zentrale Einrichtungen:Informatik und Ingenieurwissenschaften (F10) / Fakultät 10 / Institut für Automation & Industrial IT
DDC-Sachgruppen:600 Technik, Medizin, angewandte Wissenschaften
JEL-Klassifikation:Q Agricultural and Natural Resource Economics; Environmental and Ecological Economics
Open Access:Open Access
Lizenz (Deutsch):License LogoCreative Commons - Namensnennung-Nicht kommerziell