title: Anaerobic digestion of wheat straw--performance of continuous solid-state digestion.
abstract: In this study the upflow anaerobic solid-state (UASS) reactor was operated at various conditions to optimize the process parameters for anaerobically digesting wheat straw in a continuous process. Additionally, particle size effects have been studied in the operation at 55 and 60°C. Moreover, the incremental effect of the organic loading rate (OLR) to the system was examined from 2.5 to 8 gVS L(-1) d(-1). It was found that the UASS operating at 60 °C with a small OLR yields highest methane production, but the advantage over thermophilic operation is negligible. The rise in OLR reduces the systems yields, as expected. From OLR=8 gVS L(-1) d(-1) a second stage is necessary to circumvent volatile fatty acids accumulation.
authors: Leibniz Institute for Agricultural Engineering Potsdam-Bornim e.V., Max-Eyth-Allee 100, 14469 Potsdam, Germany. Electronic address: mpohl@atb-potsdam.de.
authors: Marcel
authors: M
authors: Pohl
authors: Leibniz Institute for Agricultural Engineering Potsdam-Bornim e.V., Max-Eyth-Allee 100, 14469 Potsdam, Germany.
authors: Kathrin
authors: K
authors: Heeg
authors: Leibniz Institute for Agricultural Engineering Potsdam-Bornim e.V., Max-Eyth-Allee 100, 14469 Potsdam, Germany.
authors: Jan
authors: J
authors: Mumme
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors; D005232:Fatty Acids, Volatile / Q000737:chemistry; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007700:Kinetics; D008031:Lignin / Q000737:chemistry*; D008697:Methane / Q000737:chemistry; D010316:Particle Size; D013696:Temperature; D014908:Triticum / Q000378:metabolism*; D014783:Viscosity
chemical_list: D056804:Biofuels; D005232:Fatty Acids, Volatile; C036909:lignocellulose; D008031:Lignin; D008697:Methane
keywords: Anaerobic digestion; Methane; Organic loading rate; Solid-state; Wheat straw