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Waste biomass to liquids: Low temperature conversion of sugarcane bagasse to bio-oil. The effect of combined hydrolysis treatments |
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| Authors: | Josilaine A CunhaMarcelo M Pereira Ligia MM ValentePilar Ramírez de la Piscina Narcís Homs Margareth Rose L Santos |
| Affiliation: | a Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Instituto de Química, Departamento de Química Inorgânica, Cidade Universitária, Rio de Janeiro, 21949-900 RJ, Brazil b Departament de Química Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, C/Martí i Franqués 1-11, 08028 Barcelona, Spain c Catalonia Institute for Energy Research (IREC), C/Jardins de les Dones de Negre 1, 08930 Barcelona, Spain |
| Abstract: | This article describes the influence of different sugarcane bagasse hydrolysis pretreatments on modifications to biomass feedstock and the characteristics of the resultant pyrolysis products. Sugarcane bagasse was pretreated with acid, alkaline or sequential acid/alkaline solutions and pretreated samples were then subjected to a low temperature conversion (LTC) process under He or O2/He atmospheres at 350-450 °C. Both pretreated samples and sugarcane bagasse in natura were analyzed by determination of their chemical composition and by thermogravimetric, FTIR and SEM analyses. The gases yielded during LTC were monitored on-line by quadrupole mass spectrometry, and the liquid fractions obtained were characterized by FTIR and 1H and 13C NMR. Irrespective of the sugarcane bagasse pretreatment applied, the main bio-oil component obtained was levoglucosan. However, the LTC yield of bio-oil depended on the hydrolysis treatment of the biomass and decreased in the presence of O2. The acid hydrolysis pretreatment increased the LTC bio-oil yield notably. |
| Keywords: | Biomass Sugarcane bagasse Pyrolysis Bio-oil LTC-pyrolysis Biofuels |
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