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
Suspension characteristics
After reading this article you will..
- know how suspension characteristics of various pulp types may change during manifold recycling experiments.
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
Author:
Hans Putz
References:
- Korpela, A., Kuitujen kierrätettävyys, Internal Report, KCL, Espoo, Finland, 1994
- Göttsching, L. and Stürmer, L., Pysikalische Eigenschaften von Sekundärfaserstoffen unter dem Einfluß ihrer Vorgeschichte. Teil II: Einfluß des mehrfachen Recycling. Wochenbl. Papierfabr. 126(1978) No. 23/24, p. 909–918
- Law, K.N., Valade, J.L. and Quan, J., Effects of recycling on papermaking properties of mechanical and high-yield pulps. Part I: Hardwood pulps. Tappi J. 79(1996) No. 3, p. 167–174
- Stürmer, L., Über die Eigenschaften von Sekundärfaserstoffen aus Altpapier unter dem Einfluß ihrer Vorgeschichte. pH.D. Thesis, Technische Hochschule Darmstadt, Darmstadt, 1980
- Nazhad M. M., Recycled Fiber Quality – A Review. J. Ind. Eng. Chem. 11(2005) No. 3, p. 314–329
Videos
Exercises
This page has been updated 16.11.2021