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- Local waste agroforestry managment - biomass to energy analysis with LCAPublication . Brás, Isabel; Ferreira Silva, Maria Elisabete; Ferreira, José; Raimondo, Roberta; Saetta, Rafaella; Fabricino, MassimilainoTo enable the protection of forests against rural fires are foreseen a set of measures for plan-ning and intervention, reduction their risk and impacts. Forest residues collecting centers are being created in Portugal, to reduce undesired thermal charge in nature and for biomass further valorization. Keeping this in mind, one of the strategies is the energy recovery from these residues in bi-omass power plants that were built in strategic locations. The biomass is mostly natural residu-al forest, agricultural and garden wood and green materials The present work aims to study its environmental impact. The Life Cycle Assessment methodology, using SimaPro 9.3.0.3 PhD software, was applied to identify the burden of this process and the environmental categories most relevantly affect-ed. Data achieved showed the importance of the valorization of residual biomass for energy production, reduction the impact categories of abiotic depletion due to fossil fuels, global warming, human toxicity and eutrophication.
- Comparative Life Cycle Assessment of Conventional Concrete to Ash ConcretePublication . Ferreira, José; Ferreira Silva, Maria Elisabete; Domingos, Idalina; Silva, Luiza; Brás, IsabelIn the present work, the environmental impacts of the concrete made with woody fly ash that presented compressive strength like the conventional concrete were evaluated and compared using the Life Cycle Assessment methodology. The impact assessment method used was the “CML-IA baseline” implemented in SimaPro software. The results showed that concrete with fly ash had a lower impact than conventional concrete in all the impact categories under study and may be classified as an eco-material (eco-concrete) considering that the environmental issues that are minimized are waste reduction, reduce of landfill problems and resource saving by the utilization of recycled materials.