C. Galacho

• Universidade de Évora

This study investigates the perceptions and practices of Portuguese higher education students regarding the circular economy (CE), emphasising their knowledge, attitudes, and behaviours toward sustainable resource management. Carried out by the Working Group on Circular Economy and Waste Management of the Portuguese Sustainable Campus Network (RCS)...

The analytical characterization of mortar samples from the Roman archaeological site of Frielas, located in Lisbon, Portugal; was carried out by means of X-diffraction (XRD), thermogravimetry (TGA-DTG), optical microscopy and scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), acid attack and granulometric analysis....

Cultural heritage faces significant threats from environmental challenges and unchecked development. Sustainability has made its way into the field, and there is a growing interest in seeing it thrive. The particular field of the conservation and restoration of tangible movable cultural heritage is also being improved by new concepts and treatment...

Integrating sustainability into Higher Education Institutions (HEIs) requires a multifaceted approach across different dimensions of education, governance, research, operations, and outreach. Education plays a pivotal role in achieving Sustainable Development Goal (SDG) 4 for quality education to ensure all learners acquire the knowledge and skills...

Integrating sustainability into Higher Education Institutions (HEIs) requires a multifaceted approach across different dimensions of education, governance, research, operations, and outreach. Education plays a pivotal role in achieving Sustainable Development Goal (SDG) 4 for quality education to ensure all learners acquire the knowledge and skills...

The archaeological site of villa Horta da Torre in Portugal reveals distinctive architectural features within the context of Roman villae in Hispania. Notably, the triclinium was designed with an artificial cascade originating from a double apse wall, and the walls were adorned with mosaic tessellae panels and marble skirting. During the Roman era,...

The historical monuments of the ‘City of Temples’ (Kathmandu) represent an intrinsic component of Nepal’s cultural heritage. The 2015 devastating Gorkha earthquake, besides human casualties, has led to a widespread demolition or partial damage of monuments at UNESCO World Heritage Sites, including the ones in Durbar squares. This study, through an...

Bem-vindos à página do 8º Encontro de Professores de Física e Química! https://8enpfq.sci-meet.net/ Na sequência das anteriores edições, que tiveram uma grande adesão, a Delegação do Sul e Ilhas da Sociedade Portuguesa de Física propõe um novo Encontro de Professores de Física e Química, a decorrer na Escola de Ciências e Tecnologia da Universidad...

This paper reports the preliminary results of a comparative analysis of the effects of three consolidants on the color appearance of fresco paint layers affected by lack of cohesion. In vitro assays were performed with a laboratory-synthesized nanolime, a commercial nanolime (CaLoSiL® IP25), and a commercial acrylic resin (PrimalTM SF-016 ER®) appl...

This research intends to study and optimize successful preparative strategies of nano to sub-micro limes, and to improve their efficiency in the inhibition of the degradation process and in the consolidation of wall renders. In this article we report the synthesis and characterization of nanoparticles based on alkali-earth metal hydroxides, precise...

Portugal has committed to achieve carbon neutrality by 2050, but the current profile of emissions from the industrial sector requires that CO 2 capture and storage technologies (CCS) are deployed to accomplish that target. Amongst those technologies, mineral carbonation, i.e. the ability to precipitate carbonates by reacting the main cations presen...

In Portugal, the Sines industrial area is the largest CO2 emitting cluster in Portugal, with a coal power plant, a refinery and petrochemical facilities. in 2018 were responsible for more than a third of the national emissions from stationary sources. This cluster is seen as an early opportunity to deploy CO Capture and Storage (CCS) in 2 Portugal,...

This paper overviews the synthesis of inorganic nanostructured materials for consolidation of stone and wall paintings. In the beginning we provide a description of the most used preparation methods of nanoconsolidants, in particular in the frame of colloid chemistry. Some concepts of the carbonation mechanism as well as the transport properties of...

In this publication, we report the synthesis and characterization of calcium and magnesium hydroxides nanoparticles for consolidation of mural paintings. Some preliminary results are discussed. This research is the initial part of our ongoing project which aims to develop new synthetic strategies towards novel and innovative materials for preservat...

Activated carbons (ACs) were prepared from recycled polyethylene terephthalate (PET) by chemical activation with KOH and used successfully for the removal of 4-chloro-2-methylphenoxyacetic acid (MCPA) and Methylene Blue (MB) from aqueous media. In order to improve the adsorption capacity towards pollutant removal, the AC was submitted to different...

A study of hydrothermal stability, performed in boiling water under static conditions, of MCM-41 materials containing different titanium content, prepared by direct synthesis at ambient temperature and pressure, using tetraethoxysilane, titanium ethoxide and octadecyltrimethyl- ammonium bromide is presented. The behaviour is compared with pure sili...

Mesoporous silica and titanium SBA-15 samples with different Si/Ti molar ratio were prepared by direct one-step synthesis under strongly acidic hydrothermal conditions. The materials were characterised by X-ray diffraction, nitrogen adsorption at 77K. The Si/Ti values of the final calcined materials were determined by ICP analysis. It was found tha...

The surface characterisation of new activated carbons produced from tire residues by activation with carbon dioxide was studied. The activated carbons produced were mainly basic with point of zero charge values above 8.8. The main surface functional groups identified by FTIR were ether, quinones, lactones, ketones, hydroxyls (free and phenol) and p...

Mesoporous titanosilicates were directly synthesised at ambient temperature and pressure, considering a wide range of metal content (0.01≤Ti/Si≤0.5) and using cationic surfactants of different alkyl chain length. It is shown that the use of tetradecyl-, hexadecyl- and octadecyltrimethylammonium bromide as structure-directing agents provide higher q...

In this work we studied the production of activated carbon fibres in monolith shape from a commercial textile acrylic fibre. The monoliths were produced with and without a binder. The binders tested were phenolic resin, polystyrene, polymethylmethacrylate and clay. We also tested the influence of using a solvent. The SEM analysis indicates that the...

We study the in vitro adsorption of fluoxetine hydrochloride by different adsorbents in simulated gastric and intestinal fluid, pH 1.2 and 7.5, respectively. The tested materials were two commercial activated carbons, carbomix and maxsorb MSC30, one activated carbon fibre produced in our laboratory and also three MCM-41 samples, also produced by us...

A study of thermal and mechanical stability of MCM-41 materials containing different titanium content, prepared by direct synthesis at ambient temperature and pressure, using tetraethoxysilane, titanium ethoxide and cationic surfactants (hexa- or octadecyltrimethylammonium bromide) is presented. The behaviour is compared with pure silica grades pre...

A comparison of the pore structural properties of MCM-41 containing titanium, prepared at room temperature, with those of aluminosilicate grades is presented. The influence on the structural characteristics of using different metal sources and metal content is also considered. Additionally, the stability of Al-MCM-41 and Ti-MCM-41 samples, with Si/...

A study of the pore structural properties and catalytic activity of MCM-41 containing titanium, prepared by direct synthesis at ambient temperature and pressure, using tetraethoxysilane, titanium alcoxides, cationic surfactants and ammonia is presented. The influence of different metal sources (titanium ethoxide, isopropoxide or n-butoxide), alcoho...

Aluminosilicate and titanosilicate MCM-41 were synthesized using a room temperature method. A preliminary catalytic evaluation was performed in the promotion of the 1-butene double bond isomerization, which was successful in probing differences in the acidity of the samples prepared.