Objective More than 1000 documents have been archived and studied by the research consortium, along with an extensive practical investigation of potentially applicable abiotic degradation techniques using ozone, radiolysis, or powerful radicals. Technologies for 'radical degradation', using strong oxidising or reducing transient radicals, generated from hydrogen peroxide using thermal or photo-activation, have been worked out and optimised. Extensive dynamic modelling and simulation provides insight in the overwhelming complexity of initiation, termination and propagation of radical processes, the influence of control parameters on the extent of reaction, activation of H2O2 and O3, regeneration of catalyst, and dynamics of initial degradation of dyes and acids. Surprisingly, different pathways and efficiencies are obtained by selected activation technologies, e.g. O3, UV/H2O2, Fe/H2O2, UV/Fe/H2O2 and well defined conditions of pH, temperature and oxygen concentration. Complete transfer of xenobiotic dyebath constituents into carbon-dioxide and water is possible. However, partial destruction of many dyes and auxiliaries makes dyebath effluents less toxic and more amendable for bioelimination. Practical catalysts were identified as well as efficient energy sources, reactor configurations, control conditions and parameters. The influence of many dyebath constituents on the efficiency of ExCOLOUR technologies has been identified. Careful attention to the chemistry of dye-bath formulations and dyeing processes not only allowed to overcome astonishing differences between individual dyes and real effluents in speed and extent of degradation, but also allows to find opportunities to reduce cost of treatment by exploiting chemicals, equipment and technologies already available. New concepts and process of integrated abiotic and biotic treatment technologies allow 'Extensive Colour Removal' and provide solutions for recovery and recycling.The aim of the project is to develop and optimise an innovative method for treating waste waters.Advanced oxidation processes (AOP) are presented as the prime technologies to detoxify and destroy colour and persistent chemicals, to release metals from metal-complex dyes and to enhance bio-degradation before going into a biological treatment phase.ExCOLOUR will use advanced oxidation proceses (AOP) and more particular catalysed peroxidation. AOP are defined as treatment processes which generate significant concentrations of hydroxyl-radicals (OH ), the most powerful and clean oxidant in nature.To reach these objectives first of all a representative test set will be defined, taking into consideration the chemical and ecological composition of the samples. Laboratory tests will be performed with different AOP technologies. In a first stage tests will be performed on model compounds, later on synthetic and real effluents (mixid and from specific treatments) will be tested.A mathematical model incorporating the chemical and technical characteristics of treatment will be constructed.On-site tests will be performed by different textile companies in idfferent member states.Finally the possibilities for water recycling will be evaluated. Fields of science engineering and technologyenvironmental engineeringwaste managementwaste treatment processesrecyclingengineering and technologyenvironmental engineeringwater treatment processeswastewater treatment processesengineering and technologymaterials engineeringcolorsengineering and technologymaterials engineeringsynthetic dyesnatural scienceschemical scienceselectrochemistryelectrolysis Programme(s) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Topic(s) 2.2.3 - Integrated approach to chemical and process engineering Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator CENTEXBEL Address Grotesteenweg noord 6 9052 Zwijnaarde Belgium See on map EU contribution € 0,00 Participants (4) Sort alphabetically Sort by EU Contribution Expand all Collapse all DESSEAUX NV Belgium EU contribution € 0,00 Address R. ramlotstraat 89 9200 Dendermonde See on map PC CHEMIE GMBH Germany EU contribution € 0,00 Address Dr gustav-adolph straat 3 8023 Höllriegelskreuth See on map RALUX NV Belgium EU contribution € 0,00 Address Seemenslaan 12 3650 Dilsen See on map Stazione Sperimentale per la Seta Italy EU contribution € 0,00 Address Via giuseppe colombo 81 20133 Milano See on map
