Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.biortech.2014.09.098
Title (Primary) Foam formation in biogas plants caused by anaerobic digestion of sugar beet
Author Moeller, L.; Lehnig, M.; Schenk, J.; Zehnsdorf, A.
Source Titel Bioresource Technology
Year 2015
Department UBZ
Volume 178
Page From 270
Page To 277
Language englisch
Keywords Foam formation; Anaerobic digestion; Sugar beet; Pectin
UFZ wide themes RU6
Abstract The use of sugar beet in anaerobic digestion (AD) during biogas production can lead to process upsets such as excessive foaming in fermenters. In the present study, foam formation in sugar beet-fed digestates was studied in foaming tests. The increasing disintegration grade of sugar beet was observed to have a promoting effect on foaming in the digestate but did not affect the biogas yield. Chemical analysis of foam and digestate from sugar beet silage AD showed high concentrations of pectin, other carbohydrates and N-containing substances in the foam. Both pectin and sucrose showed little foaming in AD. Nevertheless, sucrose and calcium chloride had a promoting effect on foaming for pectin AD. Salts of divalent ions also enhanced the foam intensity in the case of sugar beet silage AD, whereas ammonium chloride and urea had a lessening effect on sugar beet-based foaming.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15383
Moeller, L., Lehnig, M., Schenk, J., Zehnsdorf, A. (2015):
Foam formation in biogas plants caused by anaerobic digestion of sugar beet
Bioresour. Technol. 178 , 270 - 277 10.1016/j.biortech.2014.09.098