Multi-parameter model This model describes the more practical example of newsprint production from paper for recycling. Figure 1 shows the qualitative and non-quantitative characteristics of the paper and paper for recycling components or pulp flows. Newsprint produced nationally uses virgin fibres and recycled fibres. The same applies for the nationally produced magazine papers and imported newsprint
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- Bio-based nanomaterials
- Recycled fibre
- Pulping and biorefining
- Energy and biofuels
- Biomass chemistry and physiology
- Material testing and product properties
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Multi-parameter model
After reading this article you will..
- know the principle of advanced fibre age modelling and
- some results of fibre age distribution forecasts.
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:
- Hunold, M., Experimentelle und theoretische Untersuchungen über quantitative und qualitative Auswirkungen steigender Altpapier‑Einsatzquoten auf das Recyclingsystem Papier‑Altpapier. Ph.D. Thesis, Technische Universität Darmstadt, Darmstadt, Germany, 1997
- Göttsching, L. and Pakarinen, H. (Ed.), Recycled Fiber and Deinking: Chapter 10. p. 357–438, Fapet Oy, Helsinki, 2000, ISBN 952-5216-07-1
- Schabel, S. and Putz, H.-J., Rohstoff Altpapier – ein Ausblick. Wochenbl. Papierfabrikat. 133(2005) No. 1/2, p. 1–6
Videos
Exercises
This page has been updated 16.11.2021
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