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  • Title: Ionic liquid pretreatment to enhance the anaerobic digestion of lignocellulosic biomass.
    Author: Gao J, Chen L, Yuan K, Huang H, Yan Z.
    Journal: Bioresour Technol; 2013 Dec; 150():352-8. PubMed ID: 24185036.
    Abstract:
    Four lignocellulosic biomasses, water hyacinth, rice straw, mango leaves and spruce were pretreated by ionic liquid (IL) to enhance anaerobic digestion. The effect of pretreatment conditions, such as alkyl chain length of IL, temperature, time and operation cycle on lignocellulosic composition, structure and biogas production was evaluated. The enhancement of biogas production by [C4mim]Cl pretreatment at 120°C for 2 h decreases in the order of water hyacinth>spruce>rice straw>mango leaves. Higher methane production of regenerated rice straw and mango leaves could reach 233 and 125 mL/g carbohydrates under 140°C or 2 h and 140°C for 8, respectively. Furthermore, the technology of aqueous biphasic systems was developed to recovery IL, and the recovery rate of ILs was in the range of 54.3-94.6%.
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