THE COMPENSATION METHOD OF HIGH-YIELD XYLANASES USED FOR ONP DEINKING
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.
Hua Yao Zhulan Liu Yunfeng Cao Linguo Zhao
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology,Nanjing Forestry University Nanjing,210037,China
国际会议
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)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）