Production of levulinic acid and biocarbon electrode material from corn stover through an integrated biorefinery process [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 680.2 Manufacture of products for specific uses
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: Article No. 106644 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 262593
• Chủ đề: 1. 09 biomass fuels; 2. Chemistry; 3. Corn stover; 4. Energy & fuels; 5. Engineering

Tóm tắt

 To overcome the inefficient biomass conversion, waste generation, and lack of co-production in biorefineries, an integrated process was proposed for the conversion of corn stover into levulinic acid and biocarbon electrode material. Corn stover was pretreated through hydrothermal process using 0.45 wt% K<
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  which removed 76 wt% lignin and 85 wt% xylan while preserving 83 wt% glucan. This was followed by acid hydrolysis to produce levulinic acid at varying H<
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  concentrations and reaction time in a batch reactor at 190 �C. At a reaction time of 5 min in 2 wt% H<
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 , 35.8 wt% and 30 wt% glucan in raw and pretreated corn stover was converted to levulinic acid, respectively. The residue from acid hydrolysis was converted into biocarbon for supercapacitor electrodes via a two-step thermal activation process which showed a specific capacitance of 120 F g-1. The proposed integrated biorefinery concept provides multiple value-added products for a greater financial and environmental sustainability.