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在纤维素酶20 U/g,发酵温度38℃,接种量15%,管囊酵母和酿酒酵母的接种比例2∶1条件下,选择不同的固液比(1∶5、1∶10、1∶15和1∶20),研究了稻草秸秆同时糖化法产乙醇的动力学。结果表明:固液比1∶15时,获得了较高的乙醇产率为0.183 g/g,方程c=abt/(1+bt)可以被用来描述乙醇浓度(c)与发酵时间(t)的关系,动力学参量a随着固液比减小而减小,而动力学参量b随着固液比的减小而增加;同时,在不同固液比条件下,稻草秸秆转化乙醇反应被证明是类分形的,方程k=k1t-h能被用来很好的描述速率常数与发酵时间之间的关系。
Under the conditions of 20 U / g cellulase, 38 ℃ fermentation temperature, 15% inoculum size, 2: 1 inoculation ratio of S. capsulatus and Saccharomyces cerevisiae, : 15 and 1:20). The kinetics of ethanol production by simultaneous saccharification of straw was studied. The results showed that a high ethanol yield of 0.183 g / g was obtained at a solid-to-liquid ratio of 1:15 and the equation c = abt / (1 + bt) could be used to describe the relationship between ethanol concentration (c) and fermentation time ). The kinetic parameters a decrease with the decrease of the solid-liquid ratio, while the kinetic parameters b increase with the decrease of the solid-liquid ratio. Meanwhile, under different solid-liquid ratio conditions, the conversion of straw to ethanol Proved to be fractal, the equation k = k1t-h can be used to describe the relationship between the rate constant and the fermentation time well.