Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.biortech.2014.06.029
Titel (primär) Stable isotope composition of biogas allows early warning of complete process failure as a result of ammonia inhibition in anaerobic digesters
Autor Lv, Z.; Hu, M.; Harms, H.; Richnow, H.H.; Liebetrau, J.; Nikolausz, M.
Quelle Bioresource Technology
Erscheinungsjahr 2014
Department ISOBIO; UMB; WANA; BIOENERGIE
Band/Volume 167
Seite von 251
Seite bis 259
Sprache englisch
Keywords Biogas; Process stability; Ammonia inhibition; Stable isotope fingerprinting
UFZ Querschnittsthemen RU4;
Abstract Four 15-L lab-scale continuous stirred tank reactors were operated under mesophilic conditions to investigate the effect of ammonia inhibition. Stable isotope fingerprinting of biogas was applied as a process monitoring tool. Ammonia inhibition was initiated by amendment of chicken manure to maize silage fed reactors. During the accumulation of ammonia, the concentration of volatile fatty acids increased while the biogas production and pH decreased. However, in one reactor, an inhibited steady state with stable gas production even at high ammonia levels was achieved, while the other reactor proceeded to complete process failure. A depletion of the δ13CH4 and δ13CO2 values preceded the process inhibition. Moreover, the stable isotope composition of biogas also forecasted the complete process failure earlier than other standard parameters. The stable isotope analyses of biogas have a potential for mechanistic insights in anaerobic processes, and may be used to pre-warn process failure under stress conditions.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15005
Lv, Z., Hu, M., Harms, H., Richnow, H.H., Liebetrau, J., Nikolausz, M. (2014):
Stable isotope composition of biogas allows early warning of complete process failure as a result of ammonia inhibition in anaerobic digesters
Bioresour. Technol. 167 , 251 - 259 10.1016/j.biortech.2014.06.029