Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, USA.
Bioresour Technol. 2013 Jun;138:180-90. doi: 10.1016/j.biortech.2013.03.163. Epub 2013 Apr 1.
Studies have demonstrated that hydrothermal carbonization of biomass and waste streams results in the formation of beneficial materials/resources with minimal greenhouse gas production. Data necessary to understand how critical process conditions influence carbonization mechanisms, product formation, and associated environmental implications are currently lacking. The purpose of this work is to hydrothermally carbonize cellulose at different temperatures and to systematically sample over a 96-h period to determine how changes in reaction temperature influence product evolution. Understanding cellulose carbonization will provide insight to carbonization of cellulosic biomass and waste materials. Results from batch experiments indicate that the majority of cellulose conversion occurs between the first 0.5-4h, and faster conversion occurs at higher temperatures. Data collected over time suggest cellulose solubilization occurs prior to conversion. The composition of solids recovered after 96h is similar at all temperatures, consisting primarily of sp(2) carbons (furanic and aromatic groups) and alkyl groups.
研究表明，生物质和废物流的水热碳化会形成有益的材料/资源，温室气体排放极少。目前还缺乏了解关键工艺条件如何影响碳化机制、产品形成和相关环境影响的数据。这项工作的目的是在不同温度下水热碳化纤维素，并在 96 小时内系统地取样，以确定反应温度的变化如何影响产品的演变。了解纤维素碳化将为纤维素生物质和废料的碳化提供启示。间歇实验的结果表明，大部分纤维素转化发生在最初的 0.5-4 小时之间，较高的温度下转化速度更快。随时间收集的数据表明，纤维素的溶解发生在转化之前。96 小时后回收的固体的组成在所有温度下都相似，主要由 sp(2)碳（呋喃和芳族基团）和烷基组成。
