Hydrocarbonoclastic bacteria: from bioremediation to bioenergy feedstock

Tese de Doutoramento em Engenharia Química e Biológica.

Single-celled organisms.

Explica los organismos microscópicos cómo bacterias, protozoos y levaduras. Los estudiantes de entre once y catorce años aprenden la descomposición de los alimentos por las bacterias, la diferencia entre bacterias beneficiosas y patógenas, cómo un virus invade una célula huésped o cómo las levaduras crecen y se multiplican.

Anomalous flow behaviour of bauxite tailings

This paper deals with the anomalous flow behaviour observed in two bauxite tailings pumping systems, with 450 mm and 680 mm outer diameter. In order to enlarge the pipeline lengths in the field, tests were carried out in a laboratory test-loop in order to try to understand the anomalous (intermittent) flow behaviour and to solve the problem. Based on data obtained from these laboratory tests and using a generalized REYNOLDS number it was possible to obtain results that fit the MOODY ROUSE diagram.