Project description Environmental issues Beneficiaries Administrative data Read more

Transcription

1 LIFE DYES4EVER - Demonstration of cyclodextrin techniques in treatment of waste water in textil industry to recover and reuse textil dyes LIFE12 ENV/ES/ Project description Environmental issues Beneficiaries Administrative data Read more Contact details: Contact person: Rosa LÓPEZ Tel: Fax: RLOPEZ@aitex.es Project description: Background The textile sector has one of the longest and most complicated industrial chains in manufacturing. It is a fragmented sector dominated by SMEs, with demand driven by three main end uses: clothing, home furnishing and industrial use. Finishing represents of the most pollutant aspects of textiles, using high quantities of polluted water with a range of chemicals. Furthermore, natural biodegradable colours are being replaced by non-biodegradable synthetic dyes that now dominate the market. The wide variety of textile dyes makes them difficult to eliminate as each one has a different structure. Additionally, not all the dye is absorbed by the material and therefore an appreciable quantity ends up in the wastewater. Moreover, the textile sector consumes high quantities of energy, water, and chemicals. In 2009, 954 million Kg of textile were produced in Europe, requiring between 40 and 386 litres of high quality water to produce 1 Kg of textile. The Water Framework Directive emphasises that water must be conserved and respected as an essential requirement for human survival. This directive establishes a framework for the protection of inland surface waters, transitional waters, coastal waters and groundwater. Its objectives are to preserve aquatic ecosystems and promote sustainable water use based on a long-term protection of available water resources. The textile sector must close the water cycle to comply with the aims of the directive.

2 Objectives The main aim of the LIFE DYES4EVER project was to demonstrate the feasibility of using cyclodextrins (CDs) as encapsulation agents for non-fixated dyes, eliminating them from wastewater so they can be recovered and re-used as raw material. The resulting less contaminated wastewater can also be re-used. A semi-industrial scale pilot will be set up to recover CDs and dyes in wastewater that comes from the dyeing process. Results The main outcome of the LIFE DYES4EVER project was the demonstration and validation of the use of cyclodextrines (CDs) as encapsulation agents for dyes, eliminating them from wastewater so they can be recovered and re-used as raw material. A semi-industrial scale pilot was set up to recover CDs and dyes in wastewater coming from the dyeing process. The prototype was installed in COLORPRINT Fashion, a textile company representative of the sector. Specifically, LIFE DYES4EVER demonstrated that encapsulated dyes are not chemically altered and can therefore be re-used as dyes in a rear dyeing process. The dye is eliminated from the wastewater and re-used in other dyeing process, lengthening its life cycle. This recovery process thus reduces the amount of contaminated wastewater produced and avoids the need for additional chemicals to clean the water. The project analysed specifically the dyes used by COLORPRINT. It sought to determine the ones with the lowest ratio of fixation and therefore those present in the greatest quantities in the wastewater. Analysis thus helped select the CD types that offer the best aid to encapsulation. The result was a full chemical profiling of the dyes, leading to a determination of the CDs available in the market that present opportunities for encapsulation. The next step was to upscale to a semi-industrial scale without any diminution of the dye s performance. (The recuperation of dyes is obtained in the lab by a process of filtration: on an industrial scale it is carried out by decantation and filtration simultaneously.) The wastewater produced under normal dyeing conditions and under the new recovery process was compared, in order to show that recovery does meet current waste treatment standards. The beneficiaries have submitted a proposal to the EU IPPC Bureau to consider DYES4EVER as a new Best Available Technology (BAT). Recovered dyes were further evaluated as raw material in dyeing by making comparisons of dyed fabrics along the lines of reproducibility, the differences in the colours obtained with respect to the first-use colour, and any other parameter that was considered relevant. Tests in wastewater were also performed in order to evaluate colour reduction and its re-use in other dyeing processes. Finally, the socio-economic impact of the recovery and re-use of dyes was also evaluated. The projects assessed the impacts and savings generated by the new dyes by calculating the average cost of dyes used for polyester, the number of times a polymer can be re-used, and the loss of the polymer in use. In this

3 regard, the main limitation for the viability of the technology is the cost of cyclodextrines. Some European companies focus on manufacturing cyclodextrines and commercial applications can be found in some industries. All of them are producing high-quality products for niche markets, such as food, pharma, cosmetics and hygiene, and therefore the cost of cyclodextrines is high. In the DYES4EVER application, it s not necessary to use high-quality cyclodextrines, and therefore the cost of producing them for this application would be lower. But companies do not currently produce these low-quality cyclodextrines, and the cost of recovering waste is higher than the original raw material. It is very difficult to involve such industries in revalorisation projects because their industrial capacity is fully engaged on their own markets. Additional public or private investment for the installation of facilities for the revalorisation of cyclodextrines are required to transform wastes into added value products. The textile industry has for a long time sought solutions to minimise the environmental impact of its processes. Companies now have on-site purification plants and can recover and re-use part of their treated wastewater in order to reduce the consumption of clean water. The potential long-term impact of this project s results is considerable. Further information on the project can be found in the project's layman report (see "Read more" section). Environmental issues addressed: Themes Industry-Production - Textiles - Clothing Waste - Waste reduction - Raw material saving Keywords waste water treatment waste recycling textile industry raw material consumption industrial waste water Target EU Legislation Water Directive 2000/60 - Framework for Community action in the field of water policy ( ) Waste Directive 2008/98 - Waste and repealing certain Directives (Waste Framework Directive) ( Industry and Product Policy Directive 2010/75 - Industrial emissions (integrated pollution prevention

4 and control) ( Natura 2000 sites Not applicable Beneficiaries: Coordinator Type of organisation Description Partners Asociación de Investigación de la Industria Textil Professional organisation AITEX is a non-profit making private association formed by companies from the Spanish textile sector. It s activities focus on standardisation and quality and it has specialist experience in wastewater treatment systems using cyclodextrines. Colorprint Fashion S.L., Spain Fundación Universitaria San Antonio De Cartagena, Spain Università degli Studi "Aldo Moro" di Bari, Italy Administrative data: Project reference LIFE12 ENV/ES/ Duration 01-JUL-2013 to 31-DEC Total budget 919, EU contribution 459, Galicia(España) Asturias(España) Cantabria(España) País Vasco(España) Navarra(España) Rioja(España) Aragón(España) Madrid(España) Castilla-León(España) Castilla-La Mancha(España) Extremadura(España) Cataluña(España) Comunidad Valenciana(España) Baleares(España) Andalucía(España) Murcia(España) Ceuta y Melilla(España) Project location Canarias(España) Piemonte(Italia) Valle d'aosta(italia) Liguria(Italia) Lombardia(Italia) Trentino-Alto Adige(Italia) Veneto(Italia) Friuli-Venezia Giulia(Italia) Emilia-Romagna(Italia) Toscana(Italia)

5 Umbria(Italia) Marche(Italia) Lazio(Italia) Campania(Italia) Abruzzo(Italia) Molise(Italia) Puglia(Italia) Basilicata(Italia) Calabria(Italia) Sicilia(Italia) Sardegna(Italia) Read more: Leaflet Title: "Dyes4ever: Demonstration of cyclodextrin techniques in treatment of waste water in textil industry to recover and reuse textil dyes" (495 KB) Year: 2013 Editor: AITEX No of pages: 2 Title: "Application of chitosan, under different conditions, for textile dye removal from aqueous solutions by adsorption processes" (425 KB) Author: V. Rizzia, P. Semeraro, A. Agostiano,... [et al] Year: 2014 Editor: Dyes4ever No of pages: 1 Title: "Use of chitosan films to remove textile dyes from aqueous solutions" (1.42 MB) Author: P. Cosmaa, V. Rizzia, P. Semeraroa,... [et al] Year: 2014 Editor: Dyes4ever No of pages: 1 Title: "Dyes4ever - Reuse of recovered disperse dyes with cyclodextrins in dyeing" (1.19 MB) Author: E. Franco, M. Ferrandiz, S. Moldovan,... [et al] Editor: AITEX No of pages: 1 Title: "Dyes4ever: Demonstration of cyclodextrin techniques in treatment of waste water in textile industry to recover and reuse textile dyes" (511 KB) Year: 2013 Editor: AITEX No of pages: 1 Project web site Project's website Project web site - 2 Project's Twitter page Project web site - 2 Project's Facebook page Publication: Layman report Title: Layman report No of pages: 16 Publication: Technical report Title: Project's Final technical report Year: 2016 Editor: AITEX No of pages: 87 Slides Presentation Title: "Dyes4Ever: Demonstration of cyclodextrin techniques in treatment of wastewater in textile industry to recover and reuse textile dyes" (1.26 MB) Year: 2016 Editor: IFATCC International Congress No of pages: 35

6 Slides Presentation Title: "Demostración de la aplicación de ciclodextrinas en el tratamiento de aguas residuales de la industria textil para recuperar y reusar los colorantes textiles" (2.80 MB) Year: 2014 Editor: Dyes4ever No of pages: 30 Project description Environmental issues Beneficiaries Administrative data Read more