Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production

Detalhes bibliográficos
Autor(a) principal: Timm, Janaine Fernanda Gaelzer
Data de Publicação: 2019
Outros Autores: Morales, Michele Ferreira Dias, Passuello, Ana Carolina Badalotti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/200745
Resumo: The construction sector is known as an important consumer of natural resources. The use of by-products from different production chains in the sector is encouraged, promoting a reduction in the extraction of natural resources, reducing the need for residues disposal and enhancing circularity. Silica fume is a by-product from the smelting process in the silicon and ferrosilicon industry, commonly used as concrete supplementary cementitious material, which provides chemical and physical effects on concrete microstructure. When LCA evaluation is conducted, different impact distribution models may be applied to assess the potential impact of the by-productss. Although their benefits are recognized, some studies still report them as burden free, having no allocated impacts . Thereby, the aim of this paper is to evaluate the differences in silica fume life cycle impacts by analyzing three scenarios from cradle to gate, considering the modeling procedures described by ISO 14040, the Cut-off model from Ecoinvent version 3.3 and the impact assessment method CML v.4.4, according to the CEN EN 15804 recommended categories. Results enhance the understanding regarding model selection and demonstrate that the selection of the proper distribution model is key, considering that this may lead to important differences in the results.
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spelling Timm, Janaine Fernanda GaelzerMorales, Michele Ferreira DiasPassuello, Ana Carolina Badalotti2019-10-17T03:51:07Z20191755-1315http://hdl.handle.net/10183/200745001104054The construction sector is known as an important consumer of natural resources. The use of by-products from different production chains in the sector is encouraged, promoting a reduction in the extraction of natural resources, reducing the need for residues disposal and enhancing circularity. Silica fume is a by-product from the smelting process in the silicon and ferrosilicon industry, commonly used as concrete supplementary cementitious material, which provides chemical and physical effects on concrete microstructure. When LCA evaluation is conducted, different impact distribution models may be applied to assess the potential impact of the by-productss. Although their benefits are recognized, some studies still report them as burden free, having no allocated impacts . Thereby, the aim of this paper is to evaluate the differences in silica fume life cycle impacts by analyzing three scenarios from cradle to gate, considering the modeling procedures described by ISO 14040, the Cut-off model from Ecoinvent version 3.3 and the impact assessment method CML v.4.4, according to the CEN EN 15804 recommended categories. Results enhance the understanding regarding model selection and demonstrate that the selection of the proper distribution model is key, considering that this may lead to important differences in the results.application/pdfengIOP Conference series : earth and environmental science. Bristol, UK. Vol. 323 (2019), e012131, 8 p.Avaliação do ciclo de vidaSílica ativaSensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume productionEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001104054.pdf.txt001104054.pdf.txtExtracted Texttext/plain30579http://www.lume.ufrgs.br/bitstream/10183/200745/2/001104054.pdf.txtd738c5e2e1152c00e72003a0515a6369MD52ORIGINAL001104054.pdfTexto completo (inglês)application/pdf903248http://www.lume.ufrgs.br/bitstream/10183/200745/1/001104054.pdff1bf6aea99c2c438b14d41c115ac9d5eMD5110183/2007452019-10-18 03:53:09.904996oai:www.lume.ufrgs.br:10183/200745Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-10-18T06:53:09Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
title Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
spellingShingle Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
Timm, Janaine Fernanda Gaelzer
Avaliação do ciclo de vida
Sílica ativa
title_short Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
title_full Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
title_fullStr Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
title_full_unstemmed Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
title_sort Sensitivity Analysis of Life Cycle impacts distribution methods choice applied to silica fume production
author Timm, Janaine Fernanda Gaelzer
author_facet Timm, Janaine Fernanda Gaelzer
Morales, Michele Ferreira Dias
Passuello, Ana Carolina Badalotti
author_role author
author2 Morales, Michele Ferreira Dias
Passuello, Ana Carolina Badalotti
author2_role author
author
dc.contributor.author.fl_str_mv Timm, Janaine Fernanda Gaelzer
Morales, Michele Ferreira Dias
Passuello, Ana Carolina Badalotti
dc.subject.por.fl_str_mv Avaliação do ciclo de vida
Sílica ativa
topic Avaliação do ciclo de vida
Sílica ativa
description The construction sector is known as an important consumer of natural resources. The use of by-products from different production chains in the sector is encouraged, promoting a reduction in the extraction of natural resources, reducing the need for residues disposal and enhancing circularity. Silica fume is a by-product from the smelting process in the silicon and ferrosilicon industry, commonly used as concrete supplementary cementitious material, which provides chemical and physical effects on concrete microstructure. When LCA evaluation is conducted, different impact distribution models may be applied to assess the potential impact of the by-productss. Although their benefits are recognized, some studies still report them as burden free, having no allocated impacts . Thereby, the aim of this paper is to evaluate the differences in silica fume life cycle impacts by analyzing three scenarios from cradle to gate, considering the modeling procedures described by ISO 14040, the Cut-off model from Ecoinvent version 3.3 and the impact assessment method CML v.4.4, according to the CEN EN 15804 recommended categories. Results enhance the understanding regarding model selection and demonstrate that the selection of the proper distribution model is key, considering that this may lead to important differences in the results.
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