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Bioresour Technol

Title:		Enhancing biogas production from vinasse in sugarcane biorefineries: Effects of urea and trace elements supplementation on process performance and stability
Author(s):		Janke L; Leite AF; Batista K; Silva W; Nikolausz M; Nelles M; Stinner W;
Address:		"Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnutzige GmbH, Torgauer Strasse 116, 04347 Leipzig, Germany; Faculty of Agricultural and Environmental Sciences, Chair of Waste Management, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany. Electronic address: leandro.janke@dbfz.de. Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany. Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnutzige GmbH, Torgauer Strasse 116, 04347 Leipzig, Germany. Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnutzige GmbH, Torgauer Strasse 116, 04347 Leipzig, Germany; Faculty of Agricultural and Environmental Sciences, Chair of Waste Management, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany"
Journal Title:		Bioresour Technol
Year:		2016
Volume:		20160204
Issue:
Page Number:		10 - 20
DOI:		10.1016/j.biortech.2016.01.110
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"In this study, the effects of nitrogen, phosphate and trace elements supplementation were investigated in a semi-continuously operated upflow anaerobic sludge blanket system to enhance process stability and biogas production from sugarcane vinasse. Phosphate in form of KH2PO4 induced volatile fatty acids accumulation possibly due to potassium inhibition of the methanogenesis. Although nitrogen in form of urea increased the reactor's alkalinity, the process was overloaded with an organic loading rate of 6.1gCODL(-1)d(-1) and a hydraulic retention time of 3.6days. However, by supplementing urea and trace elements a stable operation even at an organic loading rate of 9.6gCODL(-1)d(-1) and a hydraulic retention time of 2.5days was possible, resulting in 79% higher methane production rate with a stable specific methane production of 239mLgCOD(-1)"
Keywords:		"Anaerobiosis *Biofuels Biological Oxygen Demand Analysis Bioreactors Fatty Acids, Volatile/metabolism Methane/biosynthesis Nitrogen/metabolism Phosphates/chemistry/metabolism Potassium Compounds/chemistry/metabolism Saccharum/*chemistry/metabolism Sewage;"
Notes:		"MedlineJanke, Leandro Leite, Athaydes F Batista, Karla Silva, Witan Nikolausz, Marcell Nelles, Michael Stinner, Walter eng England 2016/02/14 Bioresour Technol. 2016 Oct; 217:10-20. doi: 10.1016/j.biortech.2016.01.110. Epub 2016 Feb 4"