THE DEINKING OF NON-IMPACT PRINTED PAPER BY COMBINING ENZYME WITH MECHANICAL ACTION  

作　　者：GaoshengWang LaisuXie YanquanLong 

机构地区：[1]DepartmentofPaperScienceandTechnologyTianjinUniversityofScienceandTechnology（TUST）Tianjin,300222China

出　　处：《天津科技大学学报》2004年第A02期238-241,共4页Journal of Tianjin University of Science & Technology

摘　　要：We studied an enzymatic deinking process of non-impact printed paper which was carried out in batch equipment, similar to Valley beater. The equipment can provide suitable forces to cause toner separation from fiber rather than fiber damage. The factors that influenced the deinking efficiency included beating time, pressure between rotating bars and bottom bars, enzyme properties such as dosage, cellulase activity, temperature, pH, etc. Beating time and enzyme type and enzyme dosage was investigated in detail. The deinked pulp was brighter and cleaner. The drainage property also can be controlled by adjusting enzyme dosage and mechanical action strength. Combining enzyme with mechanical action provides the best deinking effects, not enzyme alone. In the meantime, mechanism of enzymatic deinking was discussed depending on the deinked pulp properties.We studied an enzymatic deinking process of non-impact printed paper which was carried out in batch equipment, similar to Valley beater. The equipment can provide suitable forces to cause toner separation from fiber rather than fiber damage. The factors that influenced the deinking efficiency included beating time, pressure between rotating bars and bottom bars, enzyme properties such as dosage, cellulase activity, temperature, pH, etc. Beating time and enzyme type and enzyme dosage was investigated in detail. The deinked pulp was brighter and cleaner. The drainage property also can be controlled by adjusting enzyme dosage and mechanical action strength. Combining enzyme with mechanical action provides the best deinking effects, not enzyme alone. In the meantime, mechanism of enzymatic deinking was discussed depending on the deinked pulp properties.

关 键 词：结合酶 脱墨 无压式印刷纸 力学作用 二次纤维 回收利用 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]