Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.
QualiSud, University Montpellier, CIRAD, Montpellier Supagro, Montpellier, France.
Bioresour Technol. 2021 Mar;323:124619. doi: 10.1016/j.biortech.2020.124619. Epub 2020 Dec 29.
Apretreatment step forlignocelluloses is responsible to alter the complex structure which allows enhancingenzymatic accessibility and bioconversion of the materials.However, there is a gap on the methods to characterize physicalevolutions of the material throughout its pretreatment.The aim of this study is to evaluate the physical changes in rice straw (RS)pretreated with alkaline followed by grinding to produce biopowders.A hydro-textural approach was applied to evaluate the physical changes of RS pretreated byimpregnation and soaking in NaOH.The results indicated that the volume deformation increased by 110%, whilethe energy consumptiondecreased by 11.3% compared to unpretreated RS.Moreover, the cellulose content and glucose were 66.8 and 212 mg/gRS obtained by RSsoaking. Thealkaline-mechanicalpretreatment was shown asan effective process to providehigh glucosereadily converted to bioethanol.Additionally, the hydro-textural approach can be considered an alternative method for biomass structural characterization.
预处理步骤是木质纤维素改变复杂结构的关键，这有助于提高材料的酶法可及性和生物转化效率。然而，在描述材料预处理过程中物理演变的方法方面存在空白。本研究旨在评估经碱性预处理后再研磨制成生物粉末的水稻秸秆（RS）的物理变化。采用水力学方法评估了用浸渍和浸泡在 NaOH 中预处理的 RS 的物理变化。结果表明，与未预处理的 RS 相比，体积变形增加了 110%，而能量消耗降低了 11.3%。此外，通过 RS 浸泡获得的纤维素含量和葡萄糖分别为 66.8 和 212mg/gRS。碱性机械预处理被证明是一种有效工艺，可提供易于转化为生物乙醇的高葡萄糖。此外，水力学方法可以被视为生物质结构特征化的替代方法。
