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Removal of hexavalent chromium of contaminated soil by coupling electrokinetic ...

PURPOSE: In this study, a novel and ecological alternative have been developed to treat soils contaminated with hexavalent chromium coupling two well-known systems: electrokinetic remediation and permeable reactive biobarriers. The electric field promotes the electromigration of the hexavalent chromium oxyanions towards the anode. The biobarriers were placed before the anode electrode, in order to promote the ...

Análise da Aptidão Física em crianças e adolescentes: Estudo de Caso

A evolução das várias componentes da Aptidão Física (AptF) em crianças e adolescentes está associada aos processos de crescimento e maturação, principalmente aqueles que ocorrem na fase do pico de desenvolvimento, momento no qual o jovem tem um abrupto aumento nas suas estruturas corporais. É desta forma que a escola constitui um local privilegiado na educação para saúde, na melhoria da Aptidão Física (AptF), (...

Soils contaminated with hexavalent chromium

Tese de doutoramento em Engenharia Química e Biológica ; The interest in environmental soil science has been growing in the last years due to the continuous degradation of this major natural resource. With this in mind, and because chromium and lead are two of the most toxic heavy metals frequently detected as soil contaminants in the Portuguese territory, the study and development of few remediation technique...

Mobility of Cr, Pb, Cd, Cu and Zn in a loamy sand soil : a comparative study

Interest in soil contamination has been growing in recent years due to the ongoing degradation of soil environments. Therefore, the development of remediation techniques and the study of contaminant sorption and migration are areas of intense research. In this study, the authors sought to evaluate the scenario of co-contamination of a loamy sand soil by multiple heavy metals. To that end, the sorption and trans...

Mobility of Cr, Pb, Cd, Cu and Zn in a loamy sand soil: a comparative study

Interest in soil contamination has been growing in recent years due to the ongoing degradation of soil environments. Therefore, the development of remediation techniques and the study of contaminant sorption and migration are areas of intense research. In this study, the authors sought to evaluate the scenario of co-contamination of a loamy sand soil by multiple heavy metals. To that end, the sorption and trans...

Bioleaching of hexavalent chromium from soils using acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - producti...

Bioleaching of hexavalent chromium from soils using Acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - productio...

Bioleaching of hexavalent chromium from soils using acidithiobacillus thiooxidans

The continuous and growing degradation of the environment, due to several anthropogenic activities, is a main concern of the scientific community. Consequently, the development of low cost techniques to clean air, water and soils are under intense investigation. In this study, the focused problem is the soil contamination by hexavalent chromium, which is known for its several industrial applications - productio...

Bioleaching of hexavalent chromium from soils using Acidithiobacillus thiooxidans

Viability study of a multiplex diagnostic platform for Chagas disease

A new multiplex assay platform was evaluated to detect Trypanosoma cruzi infection using the recombinant antigens CRA, FRA, CRAFRA fusion and parasite lysate. The antigens presented different sensitivity and specificity in a singleplex test when compared to a serial dilution of two pools comprising 10 positive serum samples and one pool of 10 negative samples. The recombinant protein CRA presented lower sensiti...