稀硫酸预处理对杂交狼尾草木质纤维素化学组分和表征结构的影响

高凤芹,景媛媛,德英,万其号,刘鹰昊,塔娜

Effects of Dilute Sulfuric Acid Pretreatment on Chemical Composition and Characterization Structure of Hybrid Pennisetum (Pennisetum americanum×P.purpureum) Lignocellulose

GAO FengQin,JING YuanYuan,DE Ying,WAN QiHao,LIU YingHao,

表5 稀酸预处理杂交狼尾草正交试验

Table 5 Orthogonal experiment evaluating dilute sulfuric acid pretreatment on hybrid pennisetum

编号 Experiment No.		因子Factors				纤维素保留率Cellulose residual (%)	半纤维素降解率Himcellulose degradation (%)
编号 Experiment No.		浓度 Concentration (%)	固液比 Solid-liquid ratio (g·mL^-1)	时间 Time (min)	温度 Temperature (℃)	纤维素保留率Cellulose residual (%)	半纤维素降解率Himcellulose degradation (%)
1		1 (1.0)	1 (1﹕6)	1 (15)	1 (110)	93.38	58.12
2			1 (1﹕6)	1 (15)	2 (120)	93.77	65.50
3			2 (1﹕8)	2 (30)	1 (110)	98.46	63.11
4			2 (1﹕8)	2 (30)	2 (120)	93.80	80.78
5		2 (1.5)	1 (1﹕6)	2 (30)	1 (110)	99.96	71.13
6			1 (1﹕6)	2 (30)	2 (120)	92.95	85.74
7			2 (1﹕8)	1 (15)	1 (110)	91.15	67.15
8			2 (1﹕8)	1 (15)	2 (120)	91.05	85.73
纤维素保留率Cellulose residual (%)	K1	379.40	380.06	369.34	382.94	∑=754.51
	K2	375.11	374.45	385.17	371.57
	K1	94.85	95.01	92.33	95.74
	K2	93.78	93.61	96.29	92.89
R		1.07	1.40	3.96	2.84
半纤维素降解率Himcellulose degradation (%)	K1	267.51	280.48	276.50	259.51	∑=577.25
	K2	309.74	296.77	300.76	317.74
	K1	66.88	70.12	69.12	64.88
	K2	77.44	74.19	75.19	79.44
R		10.56	4.07	6.07	14.56