Comparisons between Flotation Deinking Abilities of Newsprint Paper by Using Enzyme and Chemicals  

作　　者：Nucharin Luangsa-Ard Oranutch Khampan Somporn Chaiareekij 

机构地区：[1]Department of Printing and Packaging Technology, Faculty of lndustrial Ducation and Technology, King Mongkut's University ofTechnology Thonburi, Bangkok 10140, Thailand [2]Department of lmaging and Printing Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

出　　处：《Journal of Chemistry and Chemical Engineering》2012年第9期832-837,共6页化学与化工（英文版）

摘　　要：The aim of this research is to study the floatation deinking abilities of black mold enzyme and chemicals in newsprint paper application. In this experiment, the properties of deinked pulp from three different additives--chemicals, black mold enzyme, and chemicals together with black mold enzyme, are studied. The first part of the experiment was to find the optimal amount of chemicals and the optimal pH through the use of sodium hydroxide and surfactant. As a result, 0.2% of sodium hydroxide and 0.4% of surfactant on oven dried weight at pH 9 was found to be the optimal condition for the deinked pulp to yield the lowest ERIC （effective residual concentration） and the highest brightness. The second part of the experiment was to find the optimal amount of black mold enzyme used in the deinking process. As a result, the optimal condition for deinked pulp to retain the lowest ERIC and the highest brightness was 100 ppm of black mold enzyme and 10 minutes of enzyme reaction time. The third part of experiment was to study the de-inking ability of black mold enzyme and chemicals. Consequently, with 30 min of chemicals reaction time and 60 min of black mold reaction time, the deinked pulp retained low ERIC but higher brightness.

关 键 词：NEWSPRINT DEINKING ENZYME offset ink. 

分 类 号：TS761.1[轻工技术与工程—制浆造纸工程] TS749.7