Improving the value of sugarcane bagasse wastes via integrated chemical production systems: an environmentally friendly approach |
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| Institution: | 1. EULA International Center of Environmental Sciences, Universidad de Concepción, Casilla 156-D, Barrio Universitario, Concepción, Chile;2. Chemical Engineering Department, Universidade Federal de Pernambuco, Av. Professor Artur de Sá, s/n Cidade Universitária, ZIP 50740-521, Recife, PE, Brazil;1. Water and Wastewater Research Center (WWRC), Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran;2. Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC Delft, The Netherlands;1. Department of Nuclear Engineering, Faculty of Advance Sciences and Technologies, University of Isfahan, Isfahan 81746-73441, Iran;2. Department of Physics, Faculty of Science, University of Isfahan, 81747-73441 Isfahan, Iran;3. Department of Chemistry, Faculty of Science, University of Isfahan, Isfahan, Iran;1. Advanced Energy and Technology, University of Science and Technology (UST), Yuseong-gu, Daejeon, 305-333, Republic of Korea;2. New and Renewable Energy Research Division, Korea Institute of Energy Research (KIER), Yuseong-gu, Daejeon, 305-343, Republic of Korea;3. Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan;4. School of Chemical Engineering, Sungkyunkwan University (SKKU), Jangan-gu, Suwon, 440-746, Republic of Korea;1. Water and Energy for a Sustainable Agriculture, Engineering Department, Miguel Hernández University of Elche, Orihuela 03312, Spain;2. Regional Center of Water Resources CREA, Albacete 02071, Spain;3. Engineering and Agricultural Equipment Department, Technical University of Cartagena, Cartagena 30203, Spain;4. University of Seville, Aerospatial Engineering & Fluids Mechanical Department, Seville 41013, Spain |
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| Abstract: | Xylitol production by chemical or enzymatic routes generates massive amounts of hydrolyzed sugarcane bagasse as a residue. This biomass is a renewable feedstock for the production of added-value chemicals from its lignocellulosic constituents. In this work, chlorine-free, α-cellulose pulp and acetic acid were produced from hydrolyzed bagasse. Soda/AQ and oxidative processes were developed to remove lignin from the biomass. Lignin-rich liquid effluents (mixed black liquors) were converted into acetic acid via wet peroxide oxidation (WPO). Transition metals (Fe, Cu, and Mn) present in the liquor were used as homogeneous catalysts. Experimental results demonstrate the technical feasibility of converting hydrolyzed sugarcane bagasse into α-cellulose, chlorine-free pulps, and acetic acid via environmentally friendly integrated processes. |
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