An Environmentally Benign General Deinking Approach
We present a highly efficient and environmentally benign near-neutral deinking approach (coded HPES) to achieve good deinkability of print products from all major digital commercial printing technologies. More specifically, we show that with our innovative ‘twostage’ chemical pulping process, HP-Indigo ElectroInks, Laserjet dry toners, inkjet pigment and dye-based inks can be deinked to meet or exceed the target levels (i.e. speck contamination, ink elimination, filtrate darkening, color shade, luminosity) accordingly to the international deinking test standard (European Recycling Paper Council’s deinking scorecard). Reasonably good flotation yields have also been obtained with our approach. It is noteworthy that our approach is equally applicable to traditional offset inks, including the difficult-to-deink aqueous flexographic inks. We show also that advanced molecular modeling can be leveraged to reveal the underlying governing mechanism of our deinking chemistry where the chemicals work in a concerted fashion to successfully detach the marking materials from the fibers. We further show that modeling can predict and optimize the deinking performance of a wide range of potential deinking chemicals. The effectiveness of our approach has been validated both at the lab-scale and pilot scale, and can be readily scalable for adaptation in industrial paper recycling mills.
Hou T. Ng Manoj K. Bhattacharyya Laurie S. Mittelstadt Eric G. Hanson
HP Labs, Hewlett-Packard Company, 1501 Page Mill Rd, Palo Alto,California 94304, USA HP Labs, Hewlett-Packard Company, 1501 Page Mill Rd, Palo Alto, California 94304, USA
国际会议
The 31st International Congress on Imaging Science(第31届国际影像科学大会 ICIS2010)
北京
英文
122-125
2010-05-12（万方平台首次上网日期，不代表论文的发表时间）