Electrochemical Bleaching of Bulrush Pulp

Liao Shijun, Li Jianghua, Zhan Huaiyu^#
(Department of Applied Chemsitry, South China University of Technology,  Guangzhou  510641)
(^#State Key Laboratory for Pulp & Paper Engineering, South China University of Technology,  Guangzhou  510641)

Abstract  The bleaching of a bulrush pulp by electrochemical method was introduced in This paper. The effects of concentration of support electrolyte, temperature, cell potential and processing time are investigated. It is found that by keeping properly higher concentration of support electrolyte and higher cell potential it will enhance the processing velocity, and the temperature shows very strong effect on the bleaching, temperature raising could accelerate the bleaching process significantly. It is also verified that electrolyte solution could be used repeatedly it means that the electrochemical bleaching, comparing to usual chemical bleaching, could save water and lessen the drain of waste water.
Key words  Bulrush pulp,  Electrochemical bleaching,  Electrolyte

芦苇纸浆的电化学漂白研究

廖世军  李建华  詹怀宇^#
(华南理工大学理学院应用化学系  广州  510641  ^#华南理工大学造纸与制浆工程国家重点实验室  广州  510641)

摘要  研究了电化学方法漂白芦苇纸浆，考察了支持电解质浓度、温度、槽电压、时间等因素对纸浆漂白过程的影响。实验发现：适当加大支持电解质浓度和槽电压可以加快电化学漂白的速度，温度对于电化学漂白具有非常明显的影响。提高温度可以显著地加快漂白速度。实验还证实支持电解质溶液可以反复使用，既可节约用水，又可减少废液的排放。
关键词  电化学漂白  芦苇纸浆  电解质

廖世军  男，45岁，博士，教授，现从事催化化学，精细化工研究。
造纸与污染控制国家重点实验室资助项目(0109)
2003-03-04收稿，2003-07-02修回

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