Welcome- Themes
- Introduction to forest-based bioeconomy
- Wood products
- Natural fibre products
- Man-made bio-based fibre products
- Bio-based nanomaterials
- Recycled fibre
- Pulping and biorefining
- Energy and biofuels
- Biomass chemistry and physiology
- Material testing and product properties
- Forests and other biomass resources
- Supply chain
- Process control and automation
- Asset management
- Business and investment planning
- Environmental control and management
- Learning paths
- Other resources
- Tools
- Contact
- Profile
Dissolved air flotation (DAF)
After reading this article you will..
- know that common flotation technologies are applied as known from paper production process water treatment.
Recycled fibre
- Legislation
- Sources and quality of paper for recycling
- Recyclability of paper and board products – Deinkability
- Recycling versus recyclability
- Technical aspects of recycling
- Relevance of recyclability
- Repulpability and deinkability
- Deinkability test methods
- EPRC deinkability assessment
- Deinkability of different printed products
- Removability of adhesive applications
- EPRC assessment on removability of adhesive applications in graphic paper products
- Unit operations and equipment in recycled fibre processing
- Design of processes
- Design principles for stock preparation processes
- Process design for graphical grades, news print
- Process design for tissue
- Process design for board and packaging grades
- Reject and Sludge handling for graphical and tissue applications
- Reject and Sludge handling for board and packaging applications
- Water management
- Additives
- Deinking
- Bleaching of deinked pulp
- Process water treatment
- Sticky control – detackification
- Enzymatic solution for recycled fibres
- Papermaking potential of recycled fibre
- Differences between virgin and recycled fibre
- Repeated (manifold) recycling experiments
- Multiple papermaking with recycled fibres
- Modelling of fibre age distribution
- Special request of recycled fibre furnish in papermaking
- Effects of recycled fibre in papermaking
- Challenges of increased recycled fibre utilisation
Authors & references
Authors:
Roland Pelzer, James G. Tausche, Dr Jianhu Ma; Manuel Fuzy, Joerg Polste
Based on: Papermaking Science and Technology, book 7, Recycled fibre and deinking, Höke U. and Schabel S. (Book editor). Chapter 7 Additives. Jyväskylä, 2000, Fapet Oy. More references can also be found in this chapter.
References:
- 156. Menke, L. 1998. Micro-Stickies — Disturbing substances in water Circuit. In: Wochenblatt für Papier-fabrikation 126, Nr. 5, p. 187–193.
- 155 Schwarz, M. and Velinski, J. 1994. Thinking about water circuit design in recovered paper using mills. In: Wochenblatt für Papierfabrikation 122, Nr. 21, S. 825-832
- 157 Brun, J. and Carre, B. 2003. Dissolved Air Flotation of Deinking process water. In: Conference book, 6th Advanced training course on deinking technology, Grenoble
- Vogel, W. 1996. Cleaning of effluent water circuits in DIP-process with KROFTA- dissolved air flotation. In: Wochenblatt für Papierfabrikation, 23/24.
- Kamml, G. and Kappen, J., 2002. Mechanical Whitewater Treatment. In: PTS-Seminar “Water Circuits in Paper Making”, PTS-Conference Book, Munich
- Hamann, L. and Bobek, B. 2006. Ecotarget – New and innovative processes for radical changes in the European pulp & paper industry. In: Work Package 5.1 Separation techniques covering detrimental phenomena in papermaking, Project Report, Munich.
- www.wikipedia.org
Videos
Exercises
This page has been updated 16.11.2021