黄孢原毛平革菌降解褐煤工艺条件的研究

选用对木质素具有降解能力的黄孢原毛平革菌(PC菌)对硝酸预处理义马褐煤进行生物降解转化实验。主要考察了煤样粒度A、菌液用量B、煤浆浓度C和降解时间D对降解转化率的影响,实验结果表明:各因素对褐煤转化率影响的主次依次为:煤样粒度>菌液用量>煤浆浓度>降解时间。在选定的实验条件区间内,各因素的最优水平为:煤样粒度为-0·2mm;菌液用量为10mL;煤浆浓度为0·9g/50mL;降解时间为12d;即最优工艺参数组合为A1B2C2D3。 The bioconversion of Yi-Ma lignite was studied by Phanerochaete chrysosporium. The lignite degradation rate is influenced by the size of coal,the quantity of bacterium,the concentration of coal slurry and the time of degradation. The results of experiments indicate that the factors are A,B,C,D in proper order according to affecting degree of seriousness.That is the size of coal> the quantity of bacterium>the concentration of coal slurry>the time of degradation. In the selected experiment conditions,the optimum level of every factor is:the size of coal ﹣0.2mm; the quantity of bacterium 10mL; the concentration of coal slurry 0.9g/50mL; the time of degradation 12d.The optimum technological parameter combination is A1B2C2D3