CIMO - Posters em Encontros Científicos Internacionais
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Percorrer CIMO - Posters em Encontros Científicos Internacionais por Objetivos de Desenvolvimento Sustentável (ODS) "09:Indústria, Inovação e Infraestruturas"
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- Bio ilhas project: science, education, and awareness for river conservationPublication . Ferreira, Nathália Borges Bartoli; Sá, Isabel; Nogueira, Clotilde; Fachada, Ivone; Calheiros, Cristina; Geraldes, Ana MariaFloating Treatment Wetlands (FTWs) are nature-based solutions(NbS) that have gained increasing attention over the past decades for their effectiveness, low cost, and minimal maintenance requirements in improving water quality across diverse aquatic environments. One of the key ecosystem services provided by FTWs is the promotion of biodiversity, especially in environments degraded by human activity, creating habitats, refuges and nursery areas for diverse aquatic and terrestrial organisms. In this context, the present project aims to implement innovative natural engineering solutions to mitigate the effects of anthropogenic pressure and promote greater biodiversity within aquatic ecosystems. Additionally, it demand to enhance the valorization of local ecosystems and ensure equitable access to scientific knowledge.Two vegetated floating islands (4m² each) were installed in the Fervença River (Bragança, Portugal). The islands were constructed using cork agglomerate and recycled expanded polystyrene (EPS) as buoyant materials and vegetated with three plants species to enhance ecological performance.
- Biodiesel production by transesterification using choline hydroxide as catalystPublication . Lima, Renata; Queiroz, Ana; Ribeiro, António E.; Brito, PauloBiodiesel is a mixture of alkyl esters derived from vegetable oils or animal fat. Itis a biodegradable and renewable fuel and does not contribute to the emission of polluting gases into the atmosphere. Still, its major disadvantage is its relatively high cost, usually regarding production and raw materials costs (Langet al., 2001). Crude oils and fats extracted from plants and animals are alternatives to highly polluting fossil fuels. They are composed of triglycerides, which can be converted into biofuels through transesterification processes. The alcoholysis of vegetable oils or animal fats may be carried out using different catalysts: acids, bases, and enzymes. Basic catalysts, sodium or potassium hydroxide, are about 4,000 times faster than acid catalysts and do not require large amounts of alcohol. On the other hand, ionic liquids (ILs) use in catalytic processes has been studied mainly in the ecological field, as it allows a high recycling efficiency. ILs based on the choline cation (2-hydroxyethyl trimethylammonium) have received much attention, mainly due to its biocompatibility characteristics and potential for various industrial applications. Choline hydroxide (ChOH – see Fig. 1) in particular represents a promising option due to its good catalytic performance in methanol solution and its successful reuse (Fan et al., 2013). This work's main objective was to optimize the methyl transesterification reaction conditions using commercial and waste sunflower oil as raw material and ChOH as catalyst. The possibility of recovering the ChOH catalyst between reaction cycles was also assessed.
- Biodiesel production from residual cooking oils and its purification through adsorption processes using activated carbon prepared from cork wastePublication . Garção, Maria Isabella Lima; Queiroz, Ana; Brito, Paulo; Ribeiro, António E.; Gomes, Maria Carolina SérgiBiodiesel is a renewable fuel that can be produced from waste cooking oil mainly through transesterification . However, from its production results a contaminant called glycerol, which must be removed. Wet washing is the most common method for biodiesel purification, but it has several drawbacks,including high costs and the generation of large amounts of aqueous effluent. This study proposes using activated carbon obtained from industrial cork waste in adsorption as an alternative method for glycerol removal. This approach could potentially reduce the environmental impact and cost ofproducing biodiesel, while also providing an alternative for the valorization of industrial cork waste.
- Effects of radiofrequency on chestnut qualityPublication . Ribeiro, Caroline; Melgar Castañeda, Bruno; Fernandes, Ângela; Pires, Tânia C.S.P.; Finimundy, Tiane C.; Moreira, Jorge; Alexandre, Elizabete; Freire, Carlos; Franca, Tiago Vila; Fernandes, Natércia C.P.; Gonçalves, Alexandre; Barros, LillianThe chestnut (Castanea sativa Mill.) is a fruit with high nutritional value, but it is highly susceptible to infestation and post-harvest deterioration [1]. Infestations by Curculio elephas (Gyll) and Cydia splendana (Hübner) pose a significant challenge to the food industry, reducing product quality and causing considerable economic losses [2]. This study assessed the impact of radiofrequency (RF) application on the post-harvest quality of "Judia" chestnuts.
- Estrogen removal through adsorption on carbon materials prepared from biomass wastes: A reviewPublication . Exposto, Bruno Marques; Ribeiro, António E.; Brito, Paulo; Queiroz, AnaCompounds with an ever-growing presence in the biosphere and water. Related to inadequate waste disposal. Emerging pollutant that causes harmful effects in concentrations in the order of μg/L and ng/L. Examples: hormones pharmaceuticals, heavy metals, etc… Class of micropollutants that deregulate the endocrine system in humans and animals . Not easily removed by wastewater and sewage treatment facilities. To solve the issue of estrogen contamination, several separation methods have been proposed. Adsorption has been studied as a viable and practical alternative with a variety of highly efficient adsorbents, such as resins, silica, clays, zeolites, graphene oxides, chitosan, multi-walled carbon nanotubes and activated carbons.
- Infraestruturas verdes e prestação de serviços ecossistémicosPublication . Calheiros, Cristina; Ojediran, Adetunji; Mesquita, Ana; Costa, Isabella; Magalhães, João; Carrillo, Valentina; Geraldes, Ana Maria; Arenas, Francisco; Rosa-Santos, Paulo; Pereira, Sofia RodriguesAs infraestruturas verdes correspondem a uma rede de áreas naturais e seminaturais que oferecem múltiplos benefícios, tais como a conservação da natureza, o sequestro de carbono, a gestão sustentável da água e a melhoria da qualidade de vida, entre outros serviços ecossistémicos. Estas infraestruturas verdes podem integrar soluções baseadas na natureza (SbN), contribuindo para a sustentabilidade territorial, tanto urbana como rural. Atualmente, várias SbN têm vindo a ser aplicadas para enfrentar os desafios societais atuais tornado os territórios mais circulares e resilientes. Entre estas soluções destacam-se as coberturas verdes, os leitos de plantas ou FitoETARs e as ilhas flutuantes. O objetivo do presente trabalho é desenvolver SbN para integração no edifício e área envolvente, capazes de fornecer múltiplos serviços dos ecossistemas e gerar benefícios ambientais, sociais e económicos.
- Remoção de estrogénios por adsorção: Produção de adsorventes a partir de resíduos de cortiça e estudo cinéticoPublication . Exposto, Bruno Marques; Ribeiro, António E.; Brito, Paulo; Queiroz, AnaEstrogénios são hormonas sexuais responsáveis pelo desenvolvimento das características sexuais secundárias femininas. Estes podem ser naturalmente produzidos pelo organismo através das glândulas suprarrenais e gónadas, ou sintetizadas e utilizadas em contracetivos. O principal estrogénio natural é o 17β-estradiol (E2), responsável pela manutenção do ciclo menstrual, sendo a estrona (E1) o seu principal produto metabólico. Já o 17α-etinilestradiol é o principal estrogénio sintético.
- Removal of estrogens from water using activated carbon adsorbent materials prepared from olive stonesPublication . Milani, Eduardo C.; Menezes, Maraísa L.; Diáz de Tuesta, Jose Luis; Ribeiro, António E.; Brito, Paulo; Queiroz, AnaEstrogens belong to the class of water micropollutants named as endocrine disrupting chemicals and are considered persistent substances in the environment. Estrogens are a type of hormones that are continuously released to environment presenting several undesirable effects on aquatic species and human health even when present at very low concentrations (trace levels) . Additionally, it is known that traditional sewage and drinking water treatment plants are not able to remove or degrade these compounds and additional treatments are required. Activated carbons (ACs) are low-cost carbonaceous materials with a high surface area. ACs undergo an activation process in order to increase its adsorption performance. Activation can be performed by physical treatment, in which the organic material is thermal treated with an atmosphere of air, CO2, and water vapor, or also by applying some chemical treatments using generally, strong acids, chloride salts or strong bases. With this work, we present an extensive set of experimental results that shows the valorization of olive stones residues to prepare activated carbons to be used as adsorbent for the removal of estrone (E1), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) by adsorption from water.
- Study of biodiesel production from waste cooking oil by ethyl transesterification and its purification with the use of activated carbons derived from olive pitsPublication . Camilo, Gabriel L.; Queiroz, Ana; Ribeiro, António E.; Gomes, Maria Carolina Sérgi; Brito, PauloIn recent years, a collective effort is made in search of alternative forms of energy through renewable and more friendly to the environment sources, currently, about 80% of the world consumption of energy comes from fossil fuels. The environmentalm problems associated with the use of these non-renewable fuels include air pollution and global warming. In this scenario, biodiesel presents itself as a renewable fuel, environmentally friendly and with similar characteristics to common diesel. The cost of conventional biodiesel production is higher than the production of diesel from petroleum, since it is produced mainly from high quality virgin oils, it is estimated that 70 to 80% of the total cost of biodiesel production is associated with the cost of their raw materials. Hence, biodiesel production from waste cooking oil (WCO) has become an economic opportunity and an environmental strategy to help address global renewable energy challenges and contribute to a sustainable society.
- Study of biodiesel production from waste cooking oil by ethyl transesterification and its purification with the use of natural adsorbentsPublication . Camilo, Gabriel L.; Gomes, Maria Carolina Sérgi; Queiroz, Ana; Ribeiro, António E.; Brito, PauloIn recent years, a collective effort is being done in search of alternative forms of energy through renewable and more friendly to the environment sources. Thus, currently, about 80% of the world consumption of energy comes from fossil fuels. Some of the most severe environmental problems associated with the use of non-renewable fuels include air pollution and global warming. In this scenario, biodiesel presents itself as a renewable fuel, environmentally friendly and with similar physicochemical characteristics to common diesel. The cost of conventional biodiesel production is higher than the production of diesel from petroleum, since it is produced mainly from high quality virgin oils, moreover it is estimated that 70 to 80% of the total cost of biodiesel production is associated with the cost of their raw materials. Hence, biodiesel production from waste cooking oil (WCO) has become an economic opportunity and an environmental strategy to help address global renewable energy challenges and contribute to a sustainable society.