Details

Autor(en) / Beteiligte

• Gallina, Gianluca
• Alfageme, Enrique Regidor
• Biasi, Pierdomenico
• García-Serna, Juan

Titel

Hydrothermal extraction of hemicellulose: from lab to pilot scale

Ist Teil von

• Bioresource technology, 2018-01, Vol.247, p.980-991

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Novel pilot plant for hydrothermal pretreatment of lignocellulosic biomass.•Optimization of reactor set-up to minimize downtimes in hemicellulose extraction.•Verification of scale-up efficacy through experiment at different conditions.•Evolution of the liquid extract when changing its residence time in the system. A flow-through reactor for hemicelluloses extraction with hot pressurized water was scaled with a factor of 73. System performance was evaluated by comparing the temperature profile, extraction yield and kinetics of the two systems, performing experiments at 160 and 170°C, 11barg for 90min, using catalpa wood as raw material. Hemicellulose yields were 33.9% and 38.8% (lab scale 160°C and 170°C) and 35.7% and 41.7% (pilot scale 160°C and 170°C). The pilot reactor was upgraded by designing a manifold system capable to provide samples with different liquid residence time during the same experiment. Tests at 140, 150, 160 and 170°C were carried for 90min. Increasing yields (9.3–40.6%) and decreasing molecular weights (4078–1417Da) were obtained at increasing the temperature. Biomass/water ratio of 1/27 gave total average concentration of xylose of 0.4g/L (140°C) to 1.8g/L (170°C).