OPTIMIZATION OF STEAM-PRETREATMENT CONDITIONS FOR CORN STOVER USING RESPONSE SURFACE METHODOLOGY
As far as the energy crisis and the depletion of resources are concerned, the efficient utilization of renewable resources is seen as a promising technology for the 21st century. Corn stover represents a major renewable source for biogas and ethanol production. Steam explosion is one of the methods of pretreatment of lignocellulosic materials, in light of its small demand for energy, low level of pollution and low cost. In this article, optimization for conditions of steam-explosion of corn stover was investigated using response surface methodology (RSM). The glucose recovery was evaluated using cellulase from Trichoderma reesei ATCC 26921. The steam-pretreated temperature and time were selected to be the significant variables and optimized using a central composite design (CCD) and RSM. The temperature was set from 180 to 200°C and the time was set between 2 and 8 min. The center point was 190°C and 5 min. A combination of 190°C and 8 min was optimum for maximum glucose recovery (51.90％) after 48h of digestion in a shake-flask condition. The coefficient of determination R2 (0.9017) indicated that the RSM designs were effective for optimizing steam-pretreatment conditions for corn stover.
corn stover steam explosion optimization response surface methodology
Li Xin Zhang Nannan Ouyang Jia Xu Yong Yong Qiang Yu Shiyuan
Key Laboratory of Forest Genetics and Biotechnology,Ministry of Education, Nanjing Forestry University,Nanjing, 210037, China
国际会议
广州
英文
790-793
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）