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Abstract(s)
Este estágio curricular decorreu no CITEVE, situado em Vila Nova de Famalicão,
e teve como principais objetivos a realização da Avaliação de Ciclo de Vida de três
produtos da indústria têxtil, com diferentes combinações de matérias-primas: produto 1
(t-shirt com 100% de algodão convencional), produto 2 (t-shirt com 75% de algodão
convencional + 25% de algodão reciclado) e produto 3 (t-shirt com 70% de algodão
orgânico + 30% de algodão reciclado).
Adotou-se uma metodologia “berço-ao-portão” com uma unidade funcional de 1
t-shirt. O trabalho envolveu todas as etapas do processo produtivo, incluindo o transporte,
desde a extração e produção das matérias-primas até à produção da t-shirt pronta a enviar
ao cliente, deixando de fora as etapas de uso e fim de vida do produto. Para a quantificação
dos impactes ambientais, foram selecionadas e analisadas as seguintes categorias de
impacte: alterações climáticas, acidificação, eutrofização, depleção fóssil e escassez de
água. A avaliação do impacte do ciclo de vida (AICV), foi realizada com o suporte do
software GaBi versão 10.6 para calcular os impactes ambientais para cada uma das
categorias em estudo.
Obtiveram-se os seguintes resultados para os 3 produtos analisados: o produto 1
apresentou 4,30E+00 kg CO2e para as alterações climáticas, 1,88E-02 kg SO2e para a
acidificação, 6,95E-04 kg Ne para a eutrofização, 1,37E+00 kgep para a depleção fóssil
e 3,56E+01 m3worlde para a escassez de água. O produto 2, para as alterações climáticas
apresentou 3,80E+00 kg CO2e, para a acidificação 1,58E-02 kg SO2e, para a eutrofização
5,98E-04 kg Ne, para a depleção fóssil 1,20E+00 kgep e 2,99E+01 m3worlde para a
escassez de água. Por sua vez, o produto 3, para as alterações climáticas apresentou
3,64E+00 kg CO2e, para a acidificação 5,83E-03 kg SO2e, para a eutrofização 5,72E-04
kg Ne, para a depleção fóssil 1,14E+00 kgep e para a escassez de água 5,33E+00
m3worlde.
A produção de algodão convencional e algodão orgânico constituem-se como uma
das fases críticas do ciclo de vida. Para além disto, a utilização de energia elétrica
contribui bastante para as categorias das alterações climáticas e da depleção fóssil.
This curricular internship took place at CITEVE, located in Vila Nova de Famalicão, and had as main objectives the Life Cycle Assessment of three products from the textile industry, with different combinations of raw materials: product 1 (t-shirt made of 100% conventional cotton), product 2 (t-shirt with 75% conventional cotton + 25% recycled cotton) and product 3 (t-shirt with 70% organic cotton + 30% recycled cotton). A cradle-to-gate methodology was adopted with a functional unit of 1 t-shirt. The work involved all stages of the production process, including transportation, from the extraction and production of raw materials to the production of the t-shirt ready to be sent to the customer, leaving out the stages of use and end of life of the product. For the quantification of environmental impacts, the following impact categories were selected and analyzed: climate change, acidification, eutrophication, fossil depletion and water scarcity. The life cycle impact assessment (LCIA) was carried out with the support of the software GaBi version 10.6 to calculate the environmental impacts for each of the categories under study. The following results were obtained for the 3 products analyzed: product 1 showed 4.30E+00 kg CO2e for climate change, 1.88E-02 kg SO2e for acidification, 6.95E-04 kg Ne for eutrophication, 1.37E+00 kg oile for fossil depletion, and 3.56E+01 m3worlde for water scarcity. Product 2, for climate change showed 3.80E+00 kg CO2e, for acidification 1.58E-02 kg SO2e, for eutrophication 5.98E-04 kg Ne, for fossil depletion 1.20E+00 kg oile and 2.99E+01 m3worlde for water scarcity. In turn, product 3, for climate change showed 3.64E+00 kg CO2e, for acidification 5.83E-03 kg SO2e, for eutrophication 5.72E 04 kg Ne, for fossil depletion 1.14E+00 kg oile and for water scarcity 5.33E+00 m3worlde. The production of conventional and organic cotton is one of the critical stages in the life cycle. In addition, the use of electricity contributes greatly to the categories of climate change and fossil depletion.
This curricular internship took place at CITEVE, located in Vila Nova de Famalicão, and had as main objectives the Life Cycle Assessment of three products from the textile industry, with different combinations of raw materials: product 1 (t-shirt made of 100% conventional cotton), product 2 (t-shirt with 75% conventional cotton + 25% recycled cotton) and product 3 (t-shirt with 70% organic cotton + 30% recycled cotton). A cradle-to-gate methodology was adopted with a functional unit of 1 t-shirt. The work involved all stages of the production process, including transportation, from the extraction and production of raw materials to the production of the t-shirt ready to be sent to the customer, leaving out the stages of use and end of life of the product. For the quantification of environmental impacts, the following impact categories were selected and analyzed: climate change, acidification, eutrophication, fossil depletion and water scarcity. The life cycle impact assessment (LCIA) was carried out with the support of the software GaBi version 10.6 to calculate the environmental impacts for each of the categories under study. The following results were obtained for the 3 products analyzed: product 1 showed 4.30E+00 kg CO2e for climate change, 1.88E-02 kg SO2e for acidification, 6.95E-04 kg Ne for eutrophication, 1.37E+00 kg oile for fossil depletion, and 3.56E+01 m3worlde for water scarcity. Product 2, for climate change showed 3.80E+00 kg CO2e, for acidification 1.58E-02 kg SO2e, for eutrophication 5.98E-04 kg Ne, for fossil depletion 1.20E+00 kg oile and 2.99E+01 m3worlde for water scarcity. In turn, product 3, for climate change showed 3.64E+00 kg CO2e, for acidification 5.83E-03 kg SO2e, for eutrophication 5.72E 04 kg Ne, for fossil depletion 1.14E+00 kg oile and for water scarcity 5.33E+00 m3worlde. The production of conventional and organic cotton is one of the critical stages in the life cycle. In addition, the use of electricity contributes greatly to the categories of climate change and fossil depletion.
Description
Keywords
Life Cycle Assessment Sustainability Textile Industry GaBi Software Environmental Impact Categories