Objective
. objective Explore the possibilites o
f activating* the lignin before bleach
ing in order to drastically reduce the
consumption of chlorine-based chemica
ls (especially elementary chlorine). B
ackground There is a need to decrease
the use of chlorine-based chemicals, e
specially elementary chlorine, in the
bleaching of softwood and hardwood kra
ft pulp, in order to decrease the envi
ronmental impact of bleach plant efflu
ents. The ultimate goal (> year 2000)
comprises bleaching without elementary
chlorine.
There are four major principles availa
ble: 1) Replacement of elementary chlo
rine with chlorine dioxide or other ch
emicals in the sequence 2) Removal and
/or activation of residual lignin befo
re bleaching 3) External treatment of
bleach plant effluents 4) Recycling of
bleach plant effluents to the chemica
l recovery for final destruction.
This project will concentrate on princ
iple 1) and 2). * Activation means a (
chemical) treatment of the pulp in suc
h a way that a subsequent bleaching st
age will give an increased removal of
lignin/bleaching as compared to a nonactivated bleaching.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
- engineering and technologyenvironmental engineeringwaste managementwaste treatment processesrecycling
- natural scienceschemical sciencesinorganic chemistryhalogens
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Topic(s)
Data not availableCall for proposal
Data not availableFunding Scheme
CSC - Cost-sharing contractsCoordinator
28036 Madrid
Spain