Elisabete Silva

PIDI/CISeD/2025/017 • Mobilidade Sustentável e Criação de Valor Estratégico em PME

Principal Researcher:
Eduardo Miguel Teixeira Mendonça Gouveia
Duration: 2025 – 2027

Cised team members
José Luis Mendes Loureiro Abrantes
Maria Elisabete Ferreira Silva
Paulo Joaquim Antunes Vaz
Sónia Maria Marques Teixeira Mendonça Gouveia
Vasco Eduardo Graça Santos

A mobilidade sustentável já não é apenas uma meta distante ou um discurso ambientalmente correto — é, cada vez mais, uma realidade que se impõe, por necessidade, no quotidiano das organizações.
Para muitas PME, essa transição surge como um desafio real, concreto, muitas vezes envolto em incertezas: será viável? vale a pena? que riscos traz? A resposta, claro, varia consoante o setor, a dimensão, a localização… e, acima de tudo, a capacidade de adaptação de cada empresa.
Neste contexto, a substituição de veículos convencionais por soluções elétricas levanta questões que não se resolvem apenas com cálculos de poupança ou emissões. Envolve ponderar a infraestrutura de carregamento, a compatibilidade com eventuais sistemas de produção própria de energia, a manutenção dos veículos, a vida útil dos seus componentes — tudo isto tendo em conta um ecossistema empresarial onde o tempo, os recursos e o conhecimento técnico nem sempre estão disponíveis.
É precisamente aqui que este projeto se insere: procura desenvolver modelos de apoio à decisão que ajudem as PME a orientar-se nesta mudança, com base em dados reais e ferramentas que respeitem a complexidade do problema. A proposta passa por conjugar critérios técnicos, económicos e ambientais, recorrendo a análises multicritério sustentadas em informação prática: perfis de utilização dos veículos, custos de operação, emissões reais, consumo energético. Não se trata de oferecer uma solução única, mas de desenhar um quadro de possibilidades viáveis, contextualizadas.
Paralelamente, pretende-se compreender de que forma a maturidade digital — ou, por vezes, a sua ausência — influencia a capacidade das empresas em abraçar esta transformação. Há empresas com predisposição, mas sem estrutura; outras com estrutura, mas resistentes à mudança. Esse
mapeamento será fundamental para que as propostas tenham aderência à realidade.
O projeto inclui ainda uma componente mais técnica ligada à qualidade da energia em contextos onde coexistem veículos elétricos e produção fotovoltaica. A intenção é compreender melhor os impactos do carregamento sobre a rede e os distúrbios que podem afetar a integração de sistemas como inversores e baterias em ambientes de autoconsumo.
A presente proposta envolverá diretamente os departamentos da ESTGV e criará oportunidades para que estudantes dos ciclos de estudo, nomeadamente mestrado se envolvam ativamente em investigação aplicada. Pretende-se ainda fomentar o diálogo com o tecido empresarial e institucional
da região, por meio de seminários técnicos e encontros estratégicos, com vista à partilha de resultados, disseminação de boas práticas e reforço de parcerias locais.

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Electrifying Strategic Management: Leveraging Electric Vehicles for Sustainable Value Creation?

Gouveia, S., Iglesia, D. H., Abrantes, J. L., Rivero, A. J. L., Silva, E., Gouveia, E., Santos, V. (2024).
Electrifying Strategic Management: Leveraging Electric Vehicles for Sustainable Value Creation?.
Energies, 17(18), 4581.
https://doi.org/10.3390/en17184581

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Valorisation of Forest and Agriculture Residual Biomass—The Application of Life Cycle Assessment to Analyse Composting, Mulching, and Energetic Valorisation Strategies

Brás, I., Silva, E., Raimondo, R., Saetta, R., Mignano, V., Fabbricino, M., Ferreira, J. (2024).
Valorisation of Forest and Agriculture Residual Biomass — The Application of Life Cycle Assessment to Analyse Composting, Mulching, and Energetic Valorisation Strategies.
Sustainability, 16, 630.
https://doi.org/10.3390/su16020630

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PIDI/CISeD/2022/008 • R-FOREST _ Restauro de solos de zonas florestais pósfogo – análise, avaliação e modelação digital do comportamento do solo

Principal Researcher:
Elisabete Silva
Duration: 2023 – 2025

Cised team members
Isabel Brás
Filipe Caldeira
João Menoita Henriques
Ana Matos

The protection and conservation of burned forest areas requires specific actions that must be developed with a strong awareness of the local reality regarding climate, hydrogeology, social expectations and economy. Recent studies show that the ecological effects of post-fire rehabilitation treatments need to be determined and taken into account when defining forest management models, since some options may increase the level of soil degradation. Consequently, it is urgent to assess the effects of the options taken and ensure that they are included in the decision-making process. The main objective of R-FOREST project is to work on recent forest areas burned to be more resistant to fires and erosion, and thereby increase the resilience of forest ecosystems. The specific objectives intended to be achieved are: 1- Assess the effect of fire on the physical and chemical dynamics of the burned soil; 2 – Assess the soil restoration using mulching with different organic additives and its effect on ecosystem recovery, and use satellite images to improve the characterization and prediction of its constituents; 3- Modell and validate of the observed effects to predict the evolution of soil properties; and 4 - Envelop all stakeholders, including landowners and authorities, on the importance of soil protection in order to have a resilient ecosystem.
First, the characterization of the burned area will be made, evaluating the effects of fire on the physical and chemical properties of the soil. Then, 2 areas with about 0,5 hectare each (0,5 ha burned and 0,5 ha unburned) will be used to develop different soil recovery options through mulching, using urban waste composts and agro-forestry waste. The criteria for choosing the best additives will be based on soil recovery capacity, measuring environmental indicators. Sampling campaigns will be carried out to evaluate the soil physical and chemical properties, soil quality indices through the content of humic substances and bioindicators. Using univariate and multivariate statistical techniques, comparations will be made between the studied areas to highlight the effects of the intervention. Predictive models and their validation will allow describing structural patterns and comparing the effect of climate and soil restoration techniques on their quality. The success of the selected measures implementation will depend mainly on the involvement of landowners who should be aware for the crucial idiosyncrasies of sustainable forest management in the region, combined with voluntary conservation efforts, to maintain biodiversity, increasing the intrinsic value of the forest. All purposes will be integrated the involvement of researchers, landowners, companies and local associations in a participatory community panel.

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PIDI/CISeD/2023/013 • Práticas de Mobilidade Sustentável

Principal Researcher:
Eduardo Miguel Teixeira Mendonça Gouveia
Duration: 2023 – 2025

Cised team members
Filipe Manuel Simões Caldeira
Vasco Eduardo Graça Santos
Maria Elisabete Ferreira Silva
José Luis Mendes Loureiro Abrantes
Paulo Joaquim Antunes Vaz

The dynamics imposed on the electric mobility market and environmental and technological issues lead to a paradigm involving various energy chain agents, from producers, consumers, traders, and network operators.
From the outset, private users and entities are faced with various mobility solutions, including vehicles with a thermal engine, hybrid, or purely electric. In the case of EV (Electric Vehicles), decision-making includes choices that are covered with different levels of sophistication, from charging an electric vehicle from a simple single-phase 16 A socket to more complex solutions that fit the assembly of Wallbox.
Other variables, such as the type of charging (fast/slow) and battery life, are also important. The most appropriate tariff option for each case and the maintenance inherent to each type of mobility solution make the decision denser.
Concerning energy production (self-consumption) and considering the user profile, it will be essential to reflect on mobility solutions that think of renewable energy production (solar photovoltaic, other) in which the EV can be a storage point for that energy with the consequent assessment of the potential economic benefit and the resultant minimization of the ecological footprint, highlighting the carbon footprint.
On the other hand, all these dynamics of sustainable mobility will impact the electrical grids. The network operator will now have to deal with these “new” realities, minimizing the impact on the network, namely in terms of power flow and in terms of the quality of the voltage wave. Also, at the end customer level, there are reports of situations in which inverters “withdraw” photovoltaic production from the grid in the face of disturbances in the quality of the voltage wave. These situations must be assessed at the level of the network operator when they have external causes at their origin or at the level of the consumer when the source of the disturbance is internal.
The present project proposal intends to contribute at several levels in several agents: users, energy producers (self-consumption), network operators, general public due to possible ascertainable environmental benefits.
The intended results include the guidance of dissertations, digital platforms, and publication in scientific journals and communications. Protocols for the study of sustainable mobility solutions within the scope of local agents may also be framed. In terms of results, it will also be essential to organize dissemination activities to disseminate the results obtained within the community and improve the visibility of research and development work in the mobility and transport sector.

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Quantificação dos resíduos valorizáveis presentes nos rejeitados do sistema de triagem da Associação de Municípios da Região do Planalto Beirão

Loio, D., Silva, M. E., Simões, L. M. F., Dias, M., Brás, I. P. (2022).
Quantificação dos resíduos valorizáveis presentes nos rejeitados do sistema de triagem da Associação de Municípios da Região do Planalto Beirão.
Águas e Resíduos, 5-14.
http://dx.doi.org/10.22181/aer.2022.1101

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Selective collection of bio-waste in a non-intensive urban region – Producers’ characterization

Brás, I. P., Maia, S., Simões, L. M., Rabaça, T., Silva, M. E. (2022).
Selective collection of bio-waste in a non-intensive urban region – Producers’ characterization.
Sustainable Chemistry and Pharmacy, 29, 100738.
http://dx.doi.org/10.1016/j.scp.2022.100738

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