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The Preparation and Practical Deinking Property of Liquid Deinking Agent for Recycling of Waste Paper
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 Title & Authors
The Preparation and Practical Deinking Property of Liquid Deinking Agent for Recycling of Waste Paper
Chun, Yong-Jin; Soh, Soon-Young; Hong, Sang-Euy;
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It is necessary to recycle and reuse waste paper for preservation of the global environment. Instead of a solid deinking agent, liquid deinking agents have been made using various fatty acids with EO/PO added for higher deinking effect. The removal efficiency of ink on waste paper was evaluated by the ERIC and brightness properties after processes of recycling pulping (sample composition ONP: OMG = 5:5, concentration 15%, temperature , pulping time 20 min.) and flotation (concentration 1%, temperature , air flow 7 L/min, time 8 min.). Also, the ink reattachment of paper was evaluated by hyperwashing. The results show that it is effective for mass-preparation to saponify oleic acid with KOH at and to add EO/PO. This deinking agent was used in a paper plant, and we evaluated the brightness, color, and ERIC. The deinking agent showed excellent performance.
deinking agent;waste paper;recycling;ERIC;brightness;
 Cited by
Tae Jin Eom avd Soung Bae Park, "Development Trends of Deinking Agents", Prospectives of Industrial Chemistry, Vol. 5, No. 3, pp. 11-16, 2002.



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