Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, USA.
Bioresour Technol. 2011 Oct;102(19):9308-12. doi: 10.1016/j.biortech.2011.07.008. Epub 2011 Jul 18.
The use of aquatic plant cattails to produce biofuel will add value to land and reduce emissions of greenhouse gases by replacing petroleum products. Dilute-sulfuric acid pretreatment of cattails was studied using a Dionex accelerated solvent extractor (ASE) varying acid concentration (0.1-1%), treatment temperature (140-180 °C), and residence time (5-10 min). The highest total glucose yield for both the pretreatment and enzyme hydrolysis stages (97.1% of the cellulose) was reached at a temperature of 180 °C, a sulfuric acid concentration of 0.5%, and a time of 5 min. Cattails pretreated with 0.5% sulfuric acid are digestible with similar results at enzyme loadings above 15 FPU/g glucan. Glucose from cattails cellulose can be efficiently fermented to ethanol with an approximately 90% of the theoretical yield. The results in this study indicate that cattails are a promising source of feedstock for advanced renewable fuel production.
利用水生植物香蒲生产生物燃料将为土地增值，并通过替代石油产品减少温室气体排放。使用 Dionex 加速溶剂萃取器 (ASE) 研究了香蒲的稀硫酸预处理，考察了酸浓度 (0.1-1%)、处理温度 (140-180°C) 和停留时间 (5-10 min) 对预处理的影响。在温度为 180°C、硫酸浓度为 0.5%、时间为 5 min 的条件下，预处理和酶解两个阶段的总葡萄糖得率（纤维素的 97.1%）最高。用 0.5%硫酸预处理的香蒲在酶用量高于 15 FPU/g 葡聚糖时具有相似的可消化性。从香蒲纤维素中获得的葡萄糖可以有效地发酵为乙醇，理论产率约为 90%。本研究结果表明，香蒲是生产先进可再生燃料的有前途的原料来源。
