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Olive mill wastewater conversion into a stream for agricultural application: an...
Sampaio, M. A.; La Cara, F.; Correia, J. P.; Marques, Isabel Paula RamosAnaerobic digestion and the electrochemical oxidation were used to valorise the effluent of the olive oil production (olive mill wastewater, OMW). Anaerobiosis was realized in an anerobic hybrid reactor, operating at a low hydraulic retention time of about 6 days and digesting the raw OMW, without any previous substrate altarations. Electrochemical process worked with a dimensionally stable anode (DSA), withou...
Mineralization of olive mill wastewater over DSA
Gonçalves, M. R.; Correia, J. P.; Marques, Isabel Paula RamosBioenergy recovery from olive mill wastewater (OMW) has been effectively accomplished by anaerobic digestion [1]. Nevertheless, a post treatment is required to attain the discharge limit values. After the anaerobic treatment of OMW, the main issues are related to the remaining organic matter (COD), recalcitrant phenolic compounds (40-50%) and effluent dark-brown colour. The electrochemical treatment is proposed...
Ocorrência de novos espécimens de Taeniopteris na Bacia Carbonífera do Douro (E...
P. Correia; J.P. Loureiro; A. Pinto de JesusContribution and stratigraphic implications discussion of new specimens of Taeniopteris (Taeniopteris jejunata, Taeniopteris bertrandiana and Taeniopteris sp. nov. (two species ?) found in the São Pedro da Cova region (Gondomar), Douro Carboniferous Basin (lower Stephanian C) [lower Gzhelian]
Ocorrência de novos elementos megaflorísticos na Bacia Carbonífera do Douro (Es...
P. Correia; J. P. Loureiro; A. Pinto de JesusNew megafloristic elements were found in the São Pedro da Cova region (Gondomar), Douro Basin (lower Stephanian C) [lower Gzhelian]
Electrooxidation as the anaerobic pre-treatment of fats: Oleate conversion usin...
Gonçalves, M. M.; Alves, M. M.; Correia, J. P.; Marques, I. P.Electrochemical treatment of oleate using RuO2 and IrO2 type dimensionally stable anodes in alkaline medium was performed to develop a feasible anaerobic pre-treatment of fatty effluents. The results showed that the pre-treated solutions over RuO2 were faster degraded by anaerobic consortium than the raw oleate solutions or the electrolysed solutions using IrO2. In batch experiments carried out with pre-treated...
Effect of electrochemical treatment of oleic acid on anaerobic digestion
Gonçalves, M. M.; Bastos, E.; Alves, M. M.; Correia, J. P.; Marques, I. P.Electrochemical pre-treatment of oleate on anaerobic digestion was investigated using two anaerobic filters (AF and AFm) working, respectively, with increasing concentrations of electrochemically pre-treated oleate and oleate. Influents containing 25% and 50% of chemical oxygen demand (COD) of these substrates did not cause relevant alterations in either digester's performance. Comparatively, the pre-treated ol...
Anodic oxidation of oleate for wastewater treatment
Gonçalves, M. M.; Joyce, A.; Alves, M. M.; Correia, J. P.; Marques, I. P.The anodic conversion of oleate was carried out on RuO2 type DSA electrode under potentiostatic control. It was used as a pre-treatment of the anaerobic degradation of oleate, which is a long chain fatty acid abundant in wastewaters. Electrochemical treatment was found to improve the anaerobic biodegradation of lipidic wastewaters. In batch experiments, pre-treated oleate was converted to methane without any la...
Pré-tratamento de compostos lipídicos para tratamento anaeróbio: oxidação anód...
Gonçalves, M. M.; Joyce, A.; Alves, M. M.; Correia, J. P.; Marques, I. P.A digestão anaeróbia é uma opção energética e simultaneamente um processo de tratamento com reconhecidas vantagens ambientais, aplicável a uma grande variedade de efluentes diluídos e concentrados. Os compostos lipídicos são um componente importante da fracção orgânica em grande parte dos efluentes gerados quer pela a agricultura e municípios quer pela indústria. Apesar destes compostos constituírem um substrat...
Oxidação electroquímica de compostos lipídicos como precursora do tratamento an...
Tudella, Joana; Gonçalves, M. M.; Marques, I. P.; Joyce, A.; Alves, M. M.; Correia, J. P.A digestão anaeróbia é um processo de tratamento de efluentes e simultaneamente uma fonte de energia, através da produção de biogás. A presença de compostos lipídicos nos efluentes não só causa problemas de inibição dos microorganismos como pode levar à lavagem do sistema, sendo frequente a aplicação de pré-tratamentos. Os tratamentos físico-químicos mostram-se, por vezes, insuficientes e originam lamas indesej...
Structuring a clinical information system for hospital services: BASELINE.
Oliveira, A G; Instituto de Biomatemática e Informática da Faculdade de Medicina de Lisboa e CISED.; Raposo, V D; Azevedo, A P; Salgado, N C; Almeida, IClinical database systems have been in use since 1972, but they still fail to meet most of the requirements they were aimed at. This includes not only the management of administrative tasks, but particularly the support of medical activities. Our study presents an experimental model of a clinical database system for general hospitals, mainly dedicated to the support of some basic, fundamental clinical activitie...
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