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
Anionic trash Anionic-dissolved and colloidal substances are often called interfering or disturbing trash without explaining what they interfere with or what they disturb. Their behaviour is connected to the negative anionic charge commonly appearing on useful and detrimental substances. The negative charge is normally due to dissociation of carboxyl and sulphonic acid groups of particles.
Authors & references
Author:
Hans Putz
References:
- Ventola, J., Effect of dissolved and colloidal substances on bonding ability of TMP-fibres. M.Sc. Thesis, Helsinki University of Technology, Paper Laboratories, Espoo, Finland, 1997
- Danielsson, K., Analysis of detrimental substances in two newsprint mills. M.Sc. Thesis, Åbo Akademi University, Faculty of Chem. Eng., Turku, Finland, 1998
- 126 Sundberg, K., Effects of wood polysaccharides on colloidal wood resin in papermaking. Ph.D. Thesis, Åbo Akademi University, Faculty of Chem. Eng., Turku, Finland, 1995
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This page has been updated 16.11.2021