Action E41 Analytical tools with applications for wood and pulping chemistry : European COoperation in the Field of Scientific and Technical Research Action E41 Analytical tools with applications for wood and pulping chemistry
Main objective : Main objective The main objective of the Action is to develop and evaluate analytical methods related to wood, pulping and bleaching chemistry.
Background : Background Strong interest and a lot of reasearch activities in Europe in the field of chemical fiber characterization.
7th European Workshop on Lignocellulosics and Pulp in Turku, Finland, August 2002 with subtitle “Towards molecular-level understanding of wood, pulp and paper”.
Links with EU research programmes : Links with EU research programmes Oxidative Enzymes for the Pulp and Paper Industry, “OXEPI” DG-XII, FAIR CT95-0805
Bleachability of alkaline pulps, “PulpBleach” FAIR-CT98-3460:
Towards efficient oxygen delignification, “OXYDELIGN” LIFE QLK5-CT-1999-01277
New environmentally-sound methods for pitch control in different paper pulp manufacturing processes", PITCH, FP5 QLK5-99-1357
Links with EU research programmes, cont. : Links with EU research programmes, cont. Fungal metalloenzymes oxidizing aromatic compounds of industrial interest, PELAS, FP5 QLK3-99-590
Wood extractives in pulp and paper manufacture: Technical and environmental implications and biological removal", WEB, FP4 FAIR-CT95-0560
Concerted Action “Co-ordination network for lignin – standardisation, production and applications adapted to market requirements, EUROLIGNIN
Specific objectives : Specific objectives Create a platform for interaction between scientists in Europe to provide a good transfer of knowledge
Evaluate and develop further the presently available chemical analytical methods
Apply new methods developed in other research fields
Evaluate the potential of the methods presently used for non-wood materials
Identify the needs for more research
Working groups : Working groups WG 1: Characterization of lignin
WG 2: Characterization of polysaccharides
WG 3: Characterization of extractives
Characterization of lignin : Characterization of lignin Molecular size and structure of lignin are crucial factors in delignification
Linkages between lignin and polysaccharides hinder the removal of lignin
Characterization of polysaccharides : Characterization of polysaccharides Unspecific delignification reactions degrade cellulose and deteriorate pulp quality
Dissolution of hemicelluloses leads to yield losses
Characterization of extractives : Characterization of extractives Wood extractives
form deposits in pulp and equipment
affect fiber properties, especially in mechanical and chemimechanical pulps
are the main contributors to the toxicity of untreated effluents
General topics of interest : General topics of interest Development of analytical on-line applications
Application of statistical multicomponent analyses
Input from closely related areas like biotechnology, synthetic polymers and biomass utilization
Application possibilities : Application possibilities Research purposes; to get new information on the chemical composition of wood and fiber
Process and/or product quality control and assessment purposes. These could be realized as
“routine type” analyses in mill laboratories
on-line process applications
Expected benefits : Expected benefits pulping and bleaching operations towards high and even pulp quality
environmentally benign pulping and bleaching methods
cost effective processes for pulping and bleaching
tools for process control in pulping and bleaching operations
Types of activities : Types of activities Workshops and seminars
Exchange of experts, scientists and graduate students for training
Exchange of reports, publications and experimental procedures
State-of-the-art conferences and workshops
Experiences after the first half year (Action started 7.6.2004) : Experiences after the first half year (Action started 7.6.2004) “Hidden competences” have been found and integrated now as part of the analytical network
Active exchange of experts: 7 STSMs accompished / requested
Analytical techniques can be rather freely discussed among laboratories without confidentiality problems
Plans: selection of interesting samples for joint analysis effort
Good spirit!
Chairman Tarja Tamminen, tarja.tamminen@kcl.fi Vice chairman, STSM manager Gerard Mortha, Gerard.Mortha@efpg.inpg.fr WG1 leader (Characterization of lignin) Ed de Jong , ed.dejong@wur.nl WG2 leader (Characterization of polysaccharides) Jürgen Puls, jpuls@holz.uni-hamburg.de WG3 leader (Characterization of extractives) Stefan Willför, Stefan.willfor@abo.fi COST E41 www.kcl.fi/cost/indexn.html : Chairman Tarja Tamminen, tarja.tamminen@kcl.fi Vice chairman, STSM manager Gerard Mortha, Gerard.Mortha@efpg.inpg.fr WG1 leader (Characterization of lignin) Ed de Jong , ed.dejong@wur.nl WG2 leader (Characterization of polysaccharides) Jürgen Puls, jpuls@holz.uni-hamburg.de WG3 leader (Characterization of extractives) Stefan Willför, Stefan.willfor@abo.fi COST E41 www.kcl.fi/cost/indexn.html Contacts
Selected topics in E41 : Selected topics in E41
Slide18 : --- Glc-Glc-Glc-Glc --- Xyl-Xyl-Xyl-Xyl-Xyl-Xyl-Xyl-Xyl-Xyl --- Ara Gal --- - - - Gal-Gal-Gal-Gal--- Glc-Glc-Glc Gal Man-Man - Glc - Man Xyl-Xyl-Xyl-Xyl Ara Analytical targets in chemical pulping Lignin Lignin Carbohydrates bound to pulp lignin: restriction to delignification Structure and molecular size of lignin
- delignification and bleaching response Molar mass of pulp polysaccharides:
- degree of cellulose damage Pulp composition:
- degree of hemicellulose dissolution (yield loss) ENZYMATIC HYDROLYSIS Glc Man-Man-Man PULP Man-Man-Man Glc --- Gal-Gal-Gal-Gal---? LIGNIN-CARBOHYDRATE COMPLEX KCL, Finland
Slide19 : UV microscopic scanning profiles of pulp fibers BFH, University of Hamburg, Germany
Slide20 : Structural characterization of lignin by ESI-MS University of Aveiro, Portugal
Slide21 : Molar mass distribution of polysaccharides CDL BOKU, Austria
Slide22 : Bonding of dye with cellulose Pulp and Paper Institute, Slovenia
Slide23 : Analysis of wood acetylation by ATR-FTIR Johannes Keppler University, Austria
Slide24 : Industrial relevance of wood side products Åbo Akademi, Finland
Slide25 : Identification of pitch components IRNAS-CSIC, Spain