8 documents found, page 1 of 1
Catalytic Membranes for Water Pollution
Castanheiro, José; Cansado, Isabel; mourao, paulo; Lopes, Maria ElminaKnowledge of membrane reactors (MRs) has increased since the 1990s. Membrane reactors can combine the catalytic reaction with the separation step in a single unit. This technology can be applied in different processes, like the chemical and petrochemical industry, energy production, wastewater treatment and biotechnology. Membrane reactors have some advantages, such as the energy consumption is lower, and the v...
The Development of a Novel Nitrate Portable Measurement System Based on a UV Pa...
Fernandes, Samuel; Tlemçani, Mouhaydine; Bortoli, Daniele; Feliciano, Manuel; Lopes, Maria ElminaNitrates can cause severe ecological imbalances in aquatic ecosystems, with considerable consequences for human health. Therefore, monitoring this inorganic form of nitrogen is essential for any water quality management structure. This research was conducted to develop a novel Nitrate Portable Measurement System (NPMS) to monitor nitrate concentrations in water samples. NPMS is a reagent-free ultraviolet system...
A Portable Measurement Device Based on Phenanthroline Complex for Iron Determin...
Fernandes, Samuel; Tlemçani, Mouhaydine; Bortoli, Daniele; Feliciano, Manuel; Lopes, Maria Elmina: In this work, a newly developed self-contained, portable, and compact iron measurement system (IMS) based on spectroscopy absorption for determination of Fe2+ in water is presented. One of the main goals of the IMS is to operate the device in the field as opposed to instruments commonly used exclusively in the laboratory. In addition, the system has been tuned to quantify iron concentrations in accordance wit...
A portable measurement device based on phenanthroline complex for iron determin...
Fernandes, Samuel; Tlemcani, Mouhaydine; Bortoli, Daniele; Feliciano, Manuel; Lopes, Maria ElminaIn this work, a newly developed self-contained, portable, and compact iron measurement system (IMS) based on spectroscopy absorption for determination of Fe2+ in water is presented. One of the main goals of the IMS is to operate the device in the field as opposed to instruments commonly used exclusively in the laboratory. In addition, the system has been tuned to quantify iron concentrations in accordance with ...
Alkoxylation of Terpenes over Heterogenous Catalysts
Castanheiro, José; Pinto, Ana; Lopes, Maria ElminaMonoterpenes are renewable raw material. They can be used in the pharmaceutical, cosmetic and food industries as active components of drugs and ingredients of fragrances. Alkoxylation reactions of terpenes are important routes to obtain compounds with high commercial value. Traditionally, homogeneous acid catalysts (sulfuric acid) have been used in these reactions. However, these homogenous catalysts have some ...
Microbe and plant-assisted remediation of organic xenobiotics, in Handbook on A...
Pinto, Ana Paula; Lopes, Maria Elmina; Dordio, Ana; Castanheiro, JoséEnvironmental pollution with organic xenobiotics viz. polycyclic aromatic hydrocarbons (PAHs) is a worldwide problem, and the development of emerging and sustainable remediation technologies for the decontamination of impacted sites are extremely meaningful. In soils, PAHs can be subject to different processes, and can be degraded by several physical, chemical and biological processes. These compounds are gener...
Jornadas do Departamento de Química de Évora 2013
Teixeira, António; Pereira, António; Galacho, Cristina; Figueiredo, Margarida; Lopes, Maria Elmina; Mendes, Paulo; Ferreira, TeresaO Departamento de Química (DQUI) é uma subunidade orgânica da Escola de Ciências e Tecnologia da Universidade de Évora com competências na coordenação de ensinos e no apoio e incentivo à investigação científica, nas áreas da química, bioquímica e engenharia química e bioquímica. No âmbito destas competências nos planos científico e pedagógico, tem-se empenhado num ensino de qualidade, na melhoria das atividades...
Jornadas do Departamento de Química de Évora 2013
Teixeira, António; Pereira, António; Galacho, Cristina; Figueiredo, Margarida; Lopes, Maria Elmina; Mendes, Paulo; Ferreira, TeresaO Departamento de Química (DQUI) é uma subunidade orgânica da Escola de Ciências e Tecnologia da Universidade de Évora com competências na coordenação de ensinos e no apoio e incentivo à investigação científica, nas áreas da química, bioquímica e engenharia química e bioquímica. No âmbito destas competências nos planos científico e pedagógico,tem-se empenhado num ensino de qualidade, na melhoria das atividades ...