ESTGV - DA - Artigo em revista científica, não indexada ao WoS/Scopus
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Browsing ESTGV - DA - Artigo em revista científica, não indexada ao WoS/Scopus by Author "Brás, Isabel"
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- Avaliação de impacte ambiental da gestão de resíduos da produção de uma bancada com base na abordagem de ACVPublication . Silva, Luiza; Ferreira Silva, Maria Elisabete; Brás, Isabel; Domingos, Idalina; Ferreira Wessel, Dulcineia; Ferreira, JoséIntroduction: Consumerism has led to an increase in environmental problems, and for this reason, sustainable solutions must be the priority when designing new products or services. Life Cycle Assessment (LCA) is one of the most important analytical tools available for choosing the best decision when it comes to sustainability. Objective: The focus of this study was to apply an LCA to the management of wastes from a kitchen/bathroom countertop production. The waste management scenarios studied were landfill (current practice) and waste recycling. The panel consists of a ceramic layer on a lamellar panel substrate, formed by glassliner and PVC, which is intended to be resistant to water, scratches and impacts. The residues generated from the panel production are glassliner and PVC plastics and ceramics. Methods: The LCA methodology was followed and the EPD 2018 method available in the SimaPro software was chosen to quantify the environmental impacts of waste management. The environmental impact categories studied were eutrophication, global warming, photochemical oxidation, ozone layer depletion, abiotic depletion and acidification. Results: The results showed that the two plastic wastes are the main contributors to acidification, eutrophication and global warming. However, for photochemical oxidation and water scarcity, the ceramic component residue is the main contributor. Comparing the two scenarios, waste recycling reduces the impacts in all environmental impact categories, in comparison with landfill. Conclusion: Recycling the residues from the production of panels brings improvements in environmental impacts in all categories analyzed.
- Avaliação de riscos profissionais em actividade industrial têxtilPublication . Leonardo, Azália; Brás, Isabelde acidente ou doenças profissionais. É obrigação de todo o empregador quantificar esse risco e tomar medidas para o minimizar. Neste texto são apresentados os parâmetros e conclusões obtidos num estudo efectuado numa empresa do sector dos tecidos para a indústria automóvel, na qual se procedeu à aplicação de vários métodos de avaliação de riscos, identificando-se ao longo do seu percurso operacional os diversos perigos e consequentes riscos. As etapas do estudo envolveram a caracterização da empresa e o seu processo produtivo, a avaliação geral dos riscos por aplicação de listas de verificação, e a avaliação de riscos por sector, aplicando o método das matrizes e a equação de Niosh 91. Verificou-se que o risco mais frequente e relevante associado às tarefas executadas é o risco de contrair lesões músculo–esqueléticas relacionadas com o trabalho - LMERT.
- Valorization of beer brewing wastes by compostingPublication . Silva, Maria Elisabete; Brás, IsabelThe aim of this work was to study the viability of recycling the residual yeast and diatomaceous earth (RYDE) slurry generated by the beer brewing industry by composting with animal manures, as well as to evaluate the quality of the composts obtained. Two pilot composting trials were carried out with different mixes: cow manure/RYDE slurry (Pile CM) and sheep manure/RYDE slurry (Pile SM). For all piles, wood chips were applied as bulking agent. The process was monitored by evaluating standard physical and chemical parameters. The compost quality was assessed by the heavy metals content and phytotoxicity. Both piles reached a thermophilic phase in the first day, however having different trends. The pH showed a slight alkaline character. The C/N reached values lower than 19 at the end of composting process. Generally, all the piles exhibited absence of heavy metals. However, the pile SM exhibited phytotoxicity. This study showed that RYDE slurry can be valorized by composting with cow manure