http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Recycling and Deinking of Recovered Paper
Paper recycling in an increasingly environmentally conscious world is gaining importance. Increased recycling activities are being driven by robust overseas markets as well as domestic demand. Recycled fibers play a very important role today in the global paper industry as a substitute for virgin pulps. Paper recovery rates continue to increase year after year Recycling technologies have been improved in recent years by advances in pulping, flotation deinking and cleaning/screening, resulting in the quality of paper made from secondary fibres approaching that of virgin paper. The process is a lot more eco-friendly than the virgin-papermaking process, using less energy and natural resources, produce less solid waste and fewer atmospheric emissions, and helps to preserve natural resources and landfill space. Currently more than half of the paper is produced from recovered papers. Most of them are used to produce brown grades paper and board but for the last two decades, there is a substantial increase in the use of recovered papers to produce, through deinking, white grades such as newsprint, tissue, market pulp. By using recycled paper, companies can take a significant step toward reducing their overall environmental impacts. This study deals with the scientific and technical advances in recycling and deinking including new developments. Covers in great depth all the aspects of recycling technologiesCovers the latest science and technology in recyclingProvides up-to-date, authoritative information and cites many mills experiences and pertinent researchIncludes the use of biotech methods for deinking, refining. and improving drainage.
1. Introduction -- 2. Legislation for use of recycled paper -- 3. Collection systems and sorting of recovered paper -- 4. Process steps in recycled fibre processing -- 5. System and process design for different paper and board grades -- 6. Effects of recycling on pulp quality -- 7. Chemicals used in deinking and their function -- 8. Deinking with enzymes -- 9. Bleaching of secondary fibres -- 10. Refining of recycled fibres -- 11. Improving drainability of recycled fibres -- 12. Effects of recycled fibre on paper machines -- 13. Control of stickies -- 14. Water reuse, wastewater treatment and closed-cycle operation -- 15. Environmental aspects of recycling -- 16. Uses of recovered paper other than papermaking -- 17. Future of paper recycling.
Technical & Manufacturing Industries & Trades