A Mathematical Model for Simultaneous Saccharification and Co-fermentation （SSCF） of C6 and C5 Sugars

Reliable production of biofuels and specifically bioethanol has attracted a significant amount of re-search recently.Within this context,this study deals with dynamic simulation of bioethanol production processes and in particular aims at developing a mathematical model for describing simultaneous saccharification and co-fermentation （SSCF） of C6 and C5 sugars.The model is constructed by combining existing mathematical mod-els for enzymatic hydrolysis and co-fermentation.An inhibition of ethanol on cellulose conversion is introduced in order to increase the reliability.The mathematical model for the SSCF is verified by comparing the model predic-tions with experimental data obtained from the ethanol production based on kraft paper mill sludge.When fitting the model to the data,only the yield coefficients for glucose and xylose metabolism were fine-tuned,which were found to be 0.43 g·g-1 （ethanol/glucose） and 0.35 g·g-1 （ethanol/xylose） respectively.These promising validation results encourage further model application to evaluate different process configurations for lignocellulosic bioetha-nol technology.

biofuels 并且明确地的可靠生产 bioethanol 最近吸引了研究的重要数量。在这上下文以内，这研究在为描述 C6 和 C5 糖的同时的 saccharification 和合作发酵(SSCF ) 开发一个数学模型处理 bioethanol 生产过程和特别地目的动态模拟。模型被为酶的水解作用和合作发酵联合存在数学模型构造。纤维素变换上的乙醇的抑制被介绍以便增加可靠性。为 SSCF 的数学模型被把模型预言与试验性的数据基于牛皮纸造纸厂污泥从乙醇生产获得了作比较验证。当适合模型到数据时，为葡萄糖和木糖新陈代谢的仅仅收益系数被调整，它被发现是 0.43 g ??? ‵????? 匠捡档牡晩捩瑡潩 ??????? 卓 ?????