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首页> 外文会议>第五届制浆造纸新技术国际研讨会（ISETPP）暨第三届国际造纸与环境学术大会（IPEC）论文集 >THE COMPENSATION METHOD OF HIGH-YIELD XYLANASES USED FOR ONP DEINKING
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THE COMPENSATION METHOD OF HIGH-YIELD XYLANASES USED FOR ONP DEINKING

机译：用于onp脱墨的高产木聚糖酶的补偿方法

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摘要

To improve the adaptability of high-yield xylanases to old newspaper pulp(ONP)deinking,the compensation method was taken for different deinking process in this paper.It was found that the optimum xylanases deinking parameters were as follows: the dosage of xylanases was 5.0 IU/g,reaction duration was 50 min,temperature was 45℃ and pH=5.0.After deinking,the whiteness of the deinked pulp increased by 2.04％ISO and the residual ink area(PPM)declined by 17324 mm2/m2.If increasing the xylanase dosage to compensate the loss of xylanase activity caused by low temperature and high alkalinity in deinking,the whiteness of deinked pulp increased by 1.94％ISO and the residual ink area reduced by 17546 mm2/m2 when the temperature was 20℃ with pH=7.0 in which also achieved the optimal deinking effect.The results showed that this compensation method could improve xylanase adaptability in industrial applications.
机译：为了提高高产木聚糖酶对旧报纸纸浆脱墨的适应性，针对不同的脱墨工艺采用了补偿方法，发现木聚糖酶的最佳脱墨参数为：木聚糖酶用量为5.0。 IU / g，反应时间为50 min，温度为45℃，pH = 5.0。脱墨后，脱墨浆的白度增加2.04％ISO，残留油墨面积（PPM）降低17324 mm2 / m2。当温度为20℃，pH = 20时，木聚糖酶的用量可以补偿由于低温和高碱度导致的脱墨过程中木聚糖酶活性的损失，脱墨纸浆的白度增加1.94％ISO，残留油墨面积减少17546 mm2 / m2。 7.0也达到了最佳的脱墨效果。结果表明，该补偿方法可以提高木聚糖酶在工业应用中的适应性。

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