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OXIDATIVE ENZYMES FOR THE PULP AND PAPER INDUSTRY

Objective

The overall aim of this project is to develop lignin degrading enzyme systems that can be used to improve the delignification, a key step in the pulp and paper manufacturing process.

The specific aims of this project are to study and optimize the action of the lignin modifying enzymes on different types of lignins in the fibre matrices and to develop new totally chlorine free (TCF) bleaching methods as well as mechanical refining methods with decreased energy consumption. Special emphasis is in the control of the enzymatic reaction in such a way that the lignin substrate is depolymerized or that repolymerization is prevented. The enzymes should enhance the reactivity of pulp lignin towards bleaching with oxygen based chemicals and, int he most successful case, even replace them. Furthermore, it would be of great advantage if the enzymes developed would operate at a wide pH-range, about pH 3-8, and at a temperature range of 60-85 C to enable the economic application of enzymes in conventional mill conditions.

Therefore, new enzymes, better suited for industrial conditions will be developed. The production of these new enzymes will be optimized in order to be able to develop economically feasible production systems. The feasibility of the new bleaching sequences will be assessed by industrial partners.

Funding Scheme

CSC - Cost-sharing contracts
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Coordinator

TECHNISCHE UNIVERSITÄT WIEN
Address
Getreidemarkt, 9 / 172
1060 Vienna
Austria

Participants (10)

EMPRESA NACIONAL DE CELULOSAS S.A.
Spain
Address
Crta. De Campano S/n. - Ribeiro - Bao
36157 Pontevedra
KNP LEYKAM AUSTRIA A.G.
Austria
Address
Bruckerstraße, 21
8101 Gratkorn
MO OCH DOMSJÖ A.B.
Sweden
Address
Hörneborgsvägen, 12
891 80 Örnsköldsvik
Technical Research Centre of Finland
Finland
Address
Tietotie 2
02044 VTT Espoo
UNITED PAPER MILLS LTD.
Finland
Address
P.o. Box 51
37601 Valkeakoski
UNIVERSITY COLLEGE CORK
Ireland
Address
Western Road
Cork
UNIVERSITY OF HELSINKI
Finland
Address
A.i. Virtasen Aukio, 1 - P.o. Box 55
00014 Helsinki
UNIVERSITÄT KAISERSLAUTERN
Germany
Address
Paul-ehrlich-straße, 23
67663 Kaiserslautern
Università degli Studi di Firenze
Italy
Address
Via Gino Capponi 9
50121 Firenze
WAGENINGEN AGRICULTURAL UNIVERSITY
Netherlands
Address
Bomenweg, 2
6703 HD Wageningen