Steam explosion pretreatment reproduction and alkaline delignification reactions performed on a pilot scale with sugarcane bagasse for bioethanol production
Steam explosion pretreatment reproduction and alkaline delignification reactions performed on a pilot scale with sugarcane bagasse for bioethanol production
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DOI：
10.1016/j.indcrop.2011.07.010
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发表时间：
2012-01-01
影响因子：
5.9
通讯作者：
Rossell, C. E. V.
中科院分区：
文献类型：
--
作者：
Rocha, G. J. M.;Goncalves, A. R.;Rossell, C. E. V.
以不同品种的天然甘蔗渣、预处理甘蔗渣和脱木质素预处理甘蔗渣（纤维素浆）为原料，在中试规模上进行了蒸汽爆破预处理再生和碱性脱木质素反应。验证了不同类型甘蔗渣在20个预处理和脱木质素过程中可能存在的化学成分差异，以及原料的化学成分变化。考虑种植土壤、种植时期和天气因素，对20个品种和产地最多样化的天然甘蔗渣样品的分析结果；没有明显的化学差异。很明显，仅凭化学成分是不可能核实不同品种甘蔗渣之间的差异的。研究结果可以为这些品种提供一些证据，但不是一个可靠的参数。分析结果表明，蒸汽爆破预处理中试工艺和预处理后材料的碱性脱木质素工艺具有良好的再生能力，其标准差均在2.7以下。预处理和碱性脱木质素过程中允许的平均值分别为66.1 +/- 0.8和51.5 +/- 2.6，确保了通过化学表征获得的过程具有良好的再现能力。(C) 2011 Elsevier B.V.版权所有
This work was focused on the steam explosion pretreatment reproduction and alkaline delignification reactions on a pilot scale for the ethanol production, through different varieties of natural sugarcane bagasse, pretreated bagasse and delignified pretreated bagasse (cellulosic pulp). The possible chemical composition differences of the various types of bagasse, as well as the chemical composition variations of the materials in the 20 processes of pretreatment and delignification on the pilot scale were verified. The analytical results of the 20 samples of most diverse varieties and origins of natural sugarcane bagasse considering planting soils, planting periods and weather; show no significant chemical differences. It is evident that only with the chemical composition it is not possible to verify the differences between the varieties of sugarcane bagasses. The research results may offer some evidences of these varieties, but it is not a reliable parameter. The pilot process of steam explosion pretreatment and the alkaline delignification process of pretreated material showed through analytical results a good capacity of reproduction, as the standard differences were below 2.7. The average allowed in the pretreatment and alkaline delignification processes were 66.1 +/- 0.8 and 51.5 +/- 2.6 respectively, ensuring an excellent reproduction capacity of the processes obtained through chemical characterizations. (C) 2011 Elsevier B.V. All rights reserved.