NaClO_2在红麻高得率浆H_2O_2漂白前的活化效果

Activating Effect of NaClO_2 Treatment before H_2O_2 Bleaching of Whole Stalk Kenaf High Yield Pulp

研究了采用NaClO2在红麻全秆高得率浆H2O2漂白前进行活化处理的效果，并与DTPA、EDTA、H2S04、CaC12的预处理效果进行了比较。结果表明，NaClO2用于H2O2漂白前浆料的活化处理，可有效提高H2O2的漂白效果，活化处理后，漂浆白度比未经活化处理浆料的白度提高8个百分点以上。NaClO2适宜的活化处理条件为：NaClO2用量0.6％，pHN4.5～6.0，温度75℃，时间120min。

This paper investigated the optimal condition of NaClO2 activating treatment before H2O2 bleaching of whole stalk kenaf high yield pulp, the effect of NaClO2 activating treatment was compared with DTPA, EDTA, HESO4 and CaC12 pretreatment in the optimal condition. The results showed that the optimal condition ofNaClO2 activating treatment are as follows： NaClO2 charge 0.6%, pH value 4.5-6.0, temperature 75℃, time 120min.