纤维素酶处理玉米秸秆对染料的吸附

Adsorption of Dye on Cellulase-treated Corn Straw

采用纤维素酶处理玉米秸秆颗粒,考察了玉米秸秆颗粒粒径、纤维素酶溶液体积浓度和pH、酶解温度、酶解时间等条件对玉米秸秆颗粒吸附染料性能的影响。实验结果表明,当玉米秸秆颗粒粒径为0.55～0.83 mm、纤维素酶溶液加入量为0.9 mL/L、纤维素酶溶液pH为4.5±0.1、酶解温度为55℃、酶解时间为80 min时,经纤维素酶酶解后玉米秸秆对活性蓝X-BR溶液的吸附脱色效果明显提高,最大脱色率为83.4%。纤维素酶酶解后玉米秸秆颗粒比表面积增大了37.2%,这是活性蓝X-BR溶液脱色率提高的主要原因。

Corn straw chips were treated by cellulase. The factors affecting the adsorption of dye on corn straw were studied. The experimental results show that when the grain size of corn straw chips is 0.55 - 0.83 mm, the dosage of cellulase solution is 0. 9 mL/L, the pH of cellulase solution is 4.5 ±0. 1, the enzymolysis temperature is 55℃ and the enzymolysis time is 80 min, the decolorization rate of reactive blue X-BR solution is 83.4%. The specific surface area of the cellulase-treated corn straw is increased by 37.2%, which is the main reason for increasing the decolorization rate of reactive blue X-BR solution.