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  Referencia 10446
Título: Análisis de ciclo de vida de camisas de nanopartículas de plata
Título original: Prospective Environmental Life Cycle Assessment of Nanosilver T-Shirts
Autor: Tobias Walser, Evangelia Demou, Daniel J. Lang and Stefanie Hellweg
Resumen: A cradle-to-grave life cycle assessment (LCA) is performed to compare nanosilver T-shirts with conventional T-shirts with and without biocidal treatment. For nanosilver production and textile incorporation, we investigate two processes: flame spray pyrolysis (FSP) and plasma polymerization with silver co-sputtering (PlaSpu). Prospective environmental impacts due to increased nanosilver T-shirt commercialization are estimated with six scenarios. Results show significant differences in environmental burdens between nanoparticle production technologies: The "cradle-to-gate" climate footprint of the production of a nanosilver T-shirt is 2.70 kg of CO(2)-equiv (FSP) and 7.67-166 kg of CO(2)-equiv (PlaSpu, varying maturity stages). Production of conventional T-shirts with and without the biocide triclosan has emissions of 2.55 kg of CO(2)-equiv (contribution from triclosan insignificant). Consumer behavior considerably affects the environmental impacts during the use phase. Lower washing frequencies can compensate for the increased climate footprint of FSP nanosilver T-shirt production. The toxic releases from washing and disposal in the life cycle of T-shirts appear to be of minor relevance. By contrast, the production phase may be rather significant due to toxic silver emissions at the mining site if high silver quantities are required.
Idioma: Inglés     País: Switzerland; Scotland; Germany     ISBN / ISSN: 0013-936X     Año: 2011
Tipo: Artículo
Área: Medioambiente > Productos respetuosos con el medioambiente
Entidad: ETH, Inst Environm Engn, CH-8093 Zurich, Switzerland // Univ Glasgow, Coll Med Vet & Life Sci, Ctr Populat & Hlth Sci, Glasgow G12 8RZ, Lanark, Scotland //ETH, Inst Environm Decis Nat & Social Sci Interface, CH-8092 Zurich, Switzerland// Leuphana Univ Lueneburg, Inst Eth & Transdisciplinary Sustainabil Res, D-21335 Luneburg, Germany
Fuente: ENVIRONMENTAL SCIENCE & TECHNOLOGY
Localización en fuente: Volume: 45 Issue: 10 Pages: 4570-4578 Published: MAY 15
Descriptores: nanopartículas; plata; biocidas; huella de carbono; ENGINEERED NANOMATERIALS; NANOPARTICLE PRODUCTION; SILVER NANOPARTICLES; RISK-ASSESSMENT; WASTE-SOLVENT; FRESH-WATER; EXPOSURE; TOXICITY; SCENARIOS; PARTICLE
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