Publisher DOI: 10.1016/j.indcrop.2017.02.010
Title: Levulinic acid production integrated into a sugarcane bagasse based biorefinery using thermal-enzymatic pretreatment
Language: English
Authors: Schmidt, Lisa 
Mthembu, Lethiwe D. 
Reddy, Prashant 
Deenadayalu, Nirmala 
Kaltschmitt, Martin 
Smirnova, Irina 
Keywords: Levulinic acid;Sugarcane bagasse;Liquid hot water treatment;Pelletizing;Methane sulfonic acid
Issue Date: 10-Feb-2017
Publisher: Elsevier
Source: Industrial Crops and Products (99): 172-178 (2017-05-01)
Journal or Series Name: Industrial crops and products 
Abstract (english): Levulinic acid (LA) is a promising platform chemical that can be produced from C6-sugars of lignocellulose. However, direct conversion of lignocellulose leads to the predefined by-products furfural and a solid residue, composed of lignin and humins. Enabling independent conversion of the major biomass components would increase the flexibility in terms of the products of a biorefinery. Therefore, this work focuses on integrating LA production into a biorefinery, which fractionates the biomass with a thermal-enzymatic treatment using hot water and enzymes only. Besides a glucose solution, used for LA production, a hemicellulose rich hydrolysate and solvent free lignin were recovered. The yields for the C6-fractions after thermal and enzymatic treatment were 95.8 mol% and 62.1 mol%, respectively. The influence of temperature (160–200 °C), residence time (3–90 min) and acid concentration (0.25–1 M) on LA synthesis, following thermal-enzymatic treatment was investigated by statistical methods, achieving a maximum LA yield of 67.7 mol%.
ISSN: 0926-6690
Institute: Thermische Verfahrenstechnik V-8 
Umwelttechnik und Energiewirtschaft V-9 
Type: (wissenschaftlicher) Artikel
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