Pulping and biorefining
- General approach and principles
- Extraction-based methods
- Separation of valuable extractives from trees
- Choosing the right solvent – hydrophobic or hydrophilic?
- Stemwood extractives-based products
- Operation modes and procedures in industrial extraction processes
- Exudate gums and latexes
- Hot-water extraction
- Wood extractives – general description
- Factors contributing to the loss of extractives
- Chemical changes in extractives during storage
- Bark extractives – terpenes and terpenoids
- Bark extractives – polyphenols and other minor compounds
- Use of deep eutectic solvents
- Chemical and biochemical conversion
- Thermochemical conversion
- Kraft pulping
- Wood material handling systems
- Pulping process-general approach
- Pulping technologies
- Drying of chemical pulps
- Chemical (market) pulps drying plant applications
- Recovery of cooking chemicals and by-products
- Integrated biorefinery concepts
- Oxygen-alkali delignification
- Delignifying or lignin-removing bleaching
- Other delignification methods
- Chemimechanical pulping
- Mechanical pulping
- Pulp characterisation and properties
Chemimechanical pulping Chemimechanical pulping (CMP) involves a gentle chemical treatment stage combined with mechanical defibration using a disk refining or a rotating grindstone to fiberise the wood feedstock and develop the necessary pulp properties for paper or board products.1-3 The processes with a yield in the range of 80 % to 95 % were originally,
Authors & references
Author:
Raimo Alén, University of Jyväskylä
References:
- Bierman, C. J. 1996. Pulping and Papermaking. 2nd edition. Academic Press, San Diego, CA, USA. Pp. 69−72.
- Gellerstedt, G. 2001. Pulping chemistry. In: Hon, D. N.-S. and Shiraishi, N. (Eds.). 2001. Wood and Cellulosic Chemistry. 2nd edition. Marcel Dekker, New York, NY, USA. Pp. 859−905.
- Lindholm, C.-A., Nickull, O. and Pitkänen, M. 2009. Chemimechanical pulping. In: Lönnberg, B. (Ed.). Mechanical Pulping. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 247−281.
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This page has been updated 24.05.2021