溶剂的溶解性能和生物质对生物质预处理的影响。
Effects of solubility properties of solvents and biomass on biomass pretreatment.
机构信息
School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore.
School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea.
出版信息
Bioresour Technol. 2014 Oct;170:160-166. doi: 10.1016/j.biortech.2014.07.057. Epub 2014 Jul 21.
Hildebrand solubility parameters of biomasses and pretreatment solvents were examined by a method of intrinsic viscosity. This is to be used as basic information in selecting a suitable solvent for biomass pretreatment processes. The effects of mixing1-ethyl-3-methylimidazolium acetate (EMIM-AC) and different solvents, lignin content in a pretreatment solvent, and biomass type on the Hildebrand solubility parameter and thermodynamic properties were carried out and calculated in this work. The Hildebrand solubility parameters of the mixtures are according to those of organic solvents: δH[EMIM-AC/DMA]=25.07<δH[EMIM-AC/DMF]=25.48<δH[EMIM-AC/DMSO]=26.10<δH[EMIM-AC/Ethanolamine]=26.95. The Hildebrand solubility parameters of biomass compositions (microcrystalline cellulose, xylan and alkali lignin) and biomasses (cassava pulp residue and rice straw) vary in the ranges of 25.14-26.13. The increases of lignin content in the pretreatment solvents lead to the Hildebrand solubility parameter becoming closer to that of lignin.
通过特性黏度法考察了生物质和预处理溶剂的 Hildebrand 溶解度参数。这将作为选择生物质预处理工艺合适溶剂的基础信息。本工作对混合 1-乙基-3-甲基咪唑醋酸盐（EMIM-AC）和不同溶剂、预处理溶剂中的木质素含量以及生物质类型对 Hildebrand 溶解度参数和热力学性质的影响进行了研究和计算。混合物的 Hildebrand 溶解度参数符合有机溶剂的规律：δH[EMIM-AC/DMA]=25.07<δH[EMIM-AC/DMF]=25.48<δH[EMIM-AC/DMSO]=26.10<δH[EMIM-AC/Ethanolamine]=26.95。生物质成分（微晶纤维素、木聚糖和碱木质素）和生物质（木薯渣和稻草）的 Hildebrand 溶解度参数在 25.14-26.13 范围内变化。预处理溶剂中木质素含量的增加导致 Hildebrand 溶解度参数更接近木质素的溶解度参数。
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