硫酸盐法竹浆漂白GIF仿酶预处理最佳条件的确定

Bamboo Pulp GIF Biomimetic Bleaching(Ⅰ) Optimum Condition and Factor Analysis of Biomimetic Pretreatment

采用正交实验法研究了竹浆GIF仿酶预处理的最佳条件及影响因素,结果表明,竹浆GIF仿酶预处理较适宜的条件为:NaOH用量1.0%,H2O2用量1.4%,CuSO4用量0.04%,吡啶用量2.8%,温度90℃,时间6 h,氧压0.2MPa,浆浓8%;竹浆GIF仿酶预处理过程中温度对纸浆高锰酸钾值、黏度、脱木素选择性、白度的影响最大,其次是时间、H2O2用量、NaOH用量、CuSO4用量,最后是吡啶用量。

The optimum condition and influential factors of bamboo pulp GW biomimetic pretreatment were studied, the results showed that the optimum condition of bamboo pulp GIF biomimetic pretreatment was： sodium hydroxide charge 1.0%, hydrogen peroxide charge 1.4 %, copper sulfate charge 0.04% ,pyridine charge 2.8%, temperature 90℃, time 6 h, oxygen pressure 0.2MPa, pulp consistence 8% ; the influence of factors on potassium permanganate value： temperature 〉 time〉 hydrogen peroxide charge 〉 sodium hydroxide charge = copper sulfate charge 〉 pyridine charge; the influence of factors on viscosity： temperature 〉 time 〉 sodium hydroxide charge = hydrogen peroxide charge 〉 copper sulfate.charge 〉 pyridine charge; the influence of factors on selectivity： temperature 〉 time 〉 hydrogen peroxide charge 〉 copper sulfate charge 〉 pyridine charge 〉 sodium hydroxide charge, and the influence of factors on brightness： temperature 〉 copper sulfate charge 〉 sodium hydroxide charge 〉 time 〉 hydrogen peroxide charge 〉 pyridine charge.