| Title: | "Efficient anaerobic mono-digestion of N-rich slaughterhouse waste: influence of ammonia, temperature and trace elements" |
| Author(s): | Ortner M; Leitzinger K; Skupien S; Bochmann G; Fuchs W; |
| Address: | "Bioenergy 2020+, Konrad Lorenz Str. 20, A-3430 Tulln, Austria; University of Natural Resources and Life Sciences, IFA Tulln, Institute for Environmental Biotechnology, Konrad Lorenz-Str. 20, A-3430 Tulln, Austria. Electronic address: markus.ortner@bioenergy2020.eu. University of Natural Resources and Life Sciences, IFA Tulln, Institute for Environmental Biotechnology, Konrad Lorenz-Str. 20, A-3430 Tulln, Austria. Electronic address: kerstin.leitzinger@boku.ac.at. University of Natural Resources and Life Sciences, IFA Tulln, Institute for Environmental Biotechnology, Konrad Lorenz-Str. 20, A-3430 Tulln, Austria. Electronic address: soeren.skupien@boku.ac.at. Bioenergy 2020+, Konrad Lorenz Str. 20, A-3430 Tulln, Austria. Electronic address: guenther.bochmann@bioenergy2020.eu. University of Natural Resources and Life Sciences, IFA Tulln, Institute for Environmental Biotechnology, Konrad Lorenz-Str. 20, A-3430 Tulln, Austria. Electronic address: werner.fuchs@boku.ac.at" |
| DOI: | 10.1016/j.biortech.2014.10.023 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "Three mono-digestion experiments treating slaughterhouse waste with high TKN concentration ( approximately 11g/kg) were applied in lab-scale at mesophilic and psychrophilic conditions to study the impact of high ammonia concentrations and additives. Precipitation of sulphur by addition of ferrous chloride did not influence process behaviour, whereas supplementation of trace elements significantly improved process stability by reducing volatile fatty acid concentration towards zero. The limit of NH4-N concentration causing a rise of VFAs to 19,000mg/l and reduction of methane by 25% was found between 7.7 and 9.1g/kg which correspond to NH3 concentrations of 830-1060mg/l. Psychrophilic operation (25 degrees C) lowered inhibitory NH3 concentration to 140mg/l, but process performance was stable only at low OLR of 0.4kgVS/m(3)d. Robust performance at highest possible NH4-N concentration (7.7g/kg), low VFA accumulation and satisfying methane yield of about 280Nm(3)/t COD was observed at OLR of 2.5kgVS/m(3)d at 37 degrees C" |
| Keywords: | *Abattoirs Ammonia/*pharmacology Anaerobiosis/drug effects Animals Cattle Ferrous Compounds/pharmacology Hydrogen-Ion Concentration Methane/analysis Nitrogen/*analysis Organic Chemicals/analysis Refuse Disposal/*methods Solid Waste/*analysis Sus scrofa *T; |
| Notes: | "MedlineOrtner, Markus Leitzinger, Kerstin Skupien, Soren Bochmann, Gunther Fuchs, Werner eng Research Support, Non-U.S. Gov't England 2014/12/03 Bioresour Technol. 2014 Dec; 174:222-32. doi: 10.1016/j.biortech.2014.10.023. Epub 2014 Oct 13" |
