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  European Commission   > Research > Key Action 5
 
index by sub-area 5.3.2. Strategies for the sustainable and multipurpose utilisation of forest resources; the forestry-wood chain
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New environmentally sound methods for pitch control in different paper pulp manufacturing processes

Contract nr: QLK5-CT-1999-01357
Project type: RS (Research and Technological Development Project)
Starting date: 01-01-2000
Duration: 36 months
Total cost: 3,133,224 EUR
EC Contribution: 1,477,759 EUR
Scientific Officer: Ignacio SEOANE
Research topic: 5.3.2. Strategies for the sustainable and multipurpose utilisation of forest resources; the forestry-wood chain

Abstract:
The accumulation of wood extractives in paper mills (forming the so-called pitch deposits) results in low-quality pulp and blockages causing important economic losses as well as effluent toxicity. This proposal focuses on the pilot-scale development of environmentally sound methods for pitch control during manufacture of selected pulps (spruce TMP and eucalypt TCF-bleached kraft pulp based on: i) fungal strains selectively removing compounds responsible for pitch deposition to be used for formulation of inocula to treat wood; ii) the use of new industrial enzymes (native or engineered poteins) for removing pitch compounds and optimised protocols for expression, fermentation and purification of these enzymes, iii) a suitable combination of the above treatments with improved physicochemical methods to remove pitch or decrease its depositability; iv)analysis of advantages of the new processes in terms of control of pitch deposition, pulp and process parameters, and effluent treatment and toxicity; and v) evaluation of the commercial interest of the treatments developed for different raw materials, pulp manufacturing processes, and world markets.

Objectives:
To design environmentally sound methods for pitch control during manufacture of selected paper pulps based on: i) previous balance of extractive-derived compounds during manufacturing of eucalypt kraft pulp and spruce TMP pulp, and identification of compounds responsible for pitch deposition; ii) selected fungal strains removing extractives from both wood types; iii) new (native or engineered) enzymes able to degrade target compounds in pulps or liquids; and iv) improved physicochemical methods to remove pitch or decrease depositability. To develop the above pitch control methods at a pilot scale, including: i) fungal growth optimisation and formulation of inocula to treat wood; ii) optimised protocols for production of the new enzymes developed; iii) combined enzymatic-physicochemical treatments; iv) pilot-scale pulping and bleaching including the above optimized treatments; v) analysis of advantages of the new processes in terms of extractive removal, pitch depositability, pulp and process parameters, and effluent toxicity; and vi) evaluation of their commercial interest for different raw materials, pulping processes and world markets.


Coordinator
Angel T. MARTINEZ
Centro de Investigaciones Biológicas (CIB) - Consejo Superior de Investigaciones Científicas (CSIC)
Madrid
SPAIN
Tel.: +34 915611800
Fax: +34 915627518
E-mail: ATMartinez@cib.csic.es


Partners
  Gilles LENON
Centre Technique du Papier (CTP)
Grenoble
FRANCE
Tel.: +33 4 76154015
Fax: +33 4 76154016
E-mail: Gilles.Lenon@ctp.inpg.fr
  Javier ROMERO
ENCE - Centro de Investigación y Tecnología (CIT)
Pontevedra
SPAIN
Tel.: +34 986872303
Fax: +34 986873364
E-mail: jromero@ence.es
  José C. DEL RIO
Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)
Sevilla
SPAIN
Tel.: +34 954624711
Fax: +34 954624002
E-mail: delrio@irnase.csic.es
  Kim BORCH
Novoenzymes
Bagsvaerd
DENMARK
Tel.: +45 44426270
Fax: +45 44427535
E-mail: kimb@novo.dk
  Taisto TIENVIERI
UPM-Kymmene
Valkeakoski
FINLAND
Tel.: +358 204162123
Fax: +358 204162162
E-mail: Taisto.Tienvieri@upm-kymmene.com
  Maija TENKANEN
VTT Biotechnology
Espoo
FINLAND
Tel.: +358 94565141
Fax: +358 94552103
E-mail: Maija.Tenkanen@vtt.fi
  Teris A. VAN BEEK
Wageningen University - Agrotechnology and Food Science
Wageningen
THE NETHERLANDS
Tel.: +31 317482376
Fax: +31 317484914
E-mail: Teris.vanBeek@Bio.oc.wag-ur.nl
  Bjarne HOLMBOM
Aabo Akademi University
Turku / Aabo
FINLAND
Tel.: +358 22154229
Fax: +358 22154868
E-mail: bholmbom@ra.abo.fi
  Angeles BLANCO
Universidad Complutense de Madrid - Facultad de Ciencias Químicas
Madrid
SPAIN
Tel.: +34 913944247
Fax: +34 913944243
E-mail: ablanco@eucmos.sim.ucm.es
  Diane P. WILLIAMS
Plant Health Care
Milford
UNITED STATES
Tel.: +1 508 4733505
Fax: +1 508 4733404
E-mail: phcwilliams@rcn.com