Équipe IMaP, unité de Recherche EPROAD, Amiens, France.
C R Biol. 2011 Nov;334(11):837.e1-837.e11. doi: 10.1016/j.crvi.2011.07.008. Epub 2011 Sep 1.
Given the non competition of miscanthus with food and animal feed, this lignocellulosic species has attracted attention as a possible biofuel resource. However, sustainability of ethanol production from lignocelluloses biomass would imply reduction in the consumption of chemicals and/or energetic means, but also valorization of the lignocellulosic by-product remaining from enzymatic saccharification. Introduction of these by-products into a cementitious matrix could be used in manufacturing a lightweight composite. Miscanthus biomass was submitted to chemical pretreatments followed by saccharification using an enzymatic cocktail. Residues from saccharification were then mixed with a cementitious matrix. Given their mechanical properties and a good adherence between cement and by-product, the hardened materials could be used. However, the delay in the beginning of setting time is too long, which prevents the direct use of by-product into cementitious matrix. Preliminary experiments using a setting accelerator in the cementitious matrix permitted significant reduction in the setting time delay.
鉴于芒草与食物和动物饲料没有竞争，这种木质纤维素物种已作为一种可能的生物燃料资源引起了人们的关注。然而，从木质纤维素生物质生产乙醇的可持续性将意味着减少化学物质和/或能源的消耗，而且还可以对酶解后剩余的木质纤维素副产物进行增值利用。将这些副产物引入水泥基质中可用于制造轻质复合材料。芒草生物质经过化学预处理，然后用酶混合物进行糖化。糖化后的残渣再与水泥基质混合。鉴于它们的机械性能以及水泥和副产物之间的良好附着力，硬化材料可以使用。然而，凝结时间开始时的延迟时间太长，这阻止了副产物直接用于水泥基质中。在水泥基质中使用凝结加速剂的初步实验可以显著减少凝结时间的延迟。
