title: Biogas Production from Sugarcane Waste: Assessment on Kinetic Challenges for Process Designing.
abstract: Biogas production from sugarcane waste has large potential for energy generation, however, to enable the optimization of the anaerobic digestion (AD) process each substrate characteristic should be carefully evaluated. In this study, the kinetic challenges for biogas production from different types of sugarcane waste were assessed. Samples of vinasse, filter cake, bagasse, and straw were analyzed in terms of total and volatile solids, chemical oxygen demand, macronutrients, trace elements, and nutritional value. Biochemical methane potential assays were performed to evaluate the energy potential of the substrates according to different types of sugarcane plants. Methane yields varied considerably (5-181 Nm³·tonFM(-1)), mainly due to the different substrate characteristics and sugar and/or ethanol production processes. Therefore, for the optimization of AD on a large-scale, continuous stirred-tank reactor with long hydraulic retention times (>35 days) should be used for biogas production from bagasse and straw, coupled with pre-treatment process to enhance the degradation of the fibrous carbohydrates. Biomass immobilization systems are recommended in case vinasse is used as substrate, due to its low solid content, while filter cake could complement the biogas production from vinasse during the sugarcane offseason, providing a higher utilization of the biogas system during the entire year.
authors.affiliation: Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany. leandro.janke@dbfz.de.|Faculty of Agricultural and Environmental Sciences, Chair of Waste Management, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany. leandro.janke@dbfz.de.
authors.forename: Leandro
authors.initials: L
authors.lastname: Janke
authors.affiliation: Department of Environmental Microbiology, UFZ-Helmholtz Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany. athaydes.leite@ufz.de.
authors.forename: Athaydes
authors.initials: A
authors.lastname: Leite
authors.affiliation: Department of Environmental Microbiology, UFZ-Helmholtz Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany. marcell.nikolausz@ufz.de.
authors.forename: Marcell
authors.initials: M
authors.lastname: Nikolausz
authors.affiliation: Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany. thomas.schmidt@dbfz.de.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schmidt
authors.affiliation: Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany. jan.liebetrau@dbfz.de.
authors.forename: Jan
authors.initials: J
authors.lastname: Liebetrau
authors.affiliation: Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany. michael.nelles@dbfz.de.|Faculty of Agricultural and Environmental Sciences, Chair of Waste Management, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany. michael.nelles@dbfz.de.
authors.forename: Michael
authors.initials: M
authors.lastname: Nelles
authors.affiliation: Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany. walter.stinner@dbfz.de.
authors.forename: Walter
authors.initials: W
authors.lastname: Stinner
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels / Q000032:analysis*; D007220:Industrial Waste / Q000032:analysis*; D007700:Kinetics; D008697:Methane / Q000378:metabolism; D031786:Saccharum / Q000737:chemistry*
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D008697:Methane
keywords: degradation rates; methane potential; nutritional requirements; process designing; sugarcane waste