首页> 外文期刊>International journal of green energy >Effect of two-stage sodium hydroxide pretreatment on the composition and structure of Napier grass (Pakchong 1) (Pennisetum purpureum)
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Effect of two-stage sodium hydroxide pretreatment on the composition and structure of Napier grass (Pakchong 1) (Pennisetum purpureum)

机译:两阶段氢氧化钠预处理对纳皮尔草(Pakchong 1)组成和结构的影响(Pennisetum purpurem)

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摘要

Sodium hydroxide is ideal in removing lignin from lignocellulosic materials at an effective operational cost. Two-stage NaOH pretreatment was employed herein to investigate lignin and hemicellulose removal and understand the morphology of Napier grass (Pakchong 1) (Pennisetum purpureum), which is considered lignocellulosic due to its high carbohydrate content. NaOH was used at different concentrations (0, 1, 2, 3, and 4 wt.%) and presoak times (1, 2, 3, and 4 h). The results demonstrated that 3 wt.% NaOH at 121 degrees C without presoak resulted in 83.5% lignin removal, with a cellulose to lignin ratio of 3.0. Moreover, the treated samples showed cracking and irregular patterns at optimal conditions.
机译:氢氧化钠是以有效的操作成本从木质纤维素材料去除木质素的理想选择。本文使用两步NaOH预处理来研究木质素和半纤维素去除,并了解纳皮尔草(Pakchong 1)(Pennisetum purpureum)的形态,其由于其高碳水化合物含量而被认为是木质纤维素。 NaOH以不同浓度(0,1,2,3和4重量%)和普雷克时代(1,2,3和4小时)使用。结果证明,3重量%的NaOH在121摄氏度的情况下,没有预磨为导致83.5%的木质素去除,纤维素与木质素比为3.0。此外,处理的样品在最佳条件下显示出裂化和不规则的图案。

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