Potabilização de águas portadoras da bactéria Escherichia coli por meio de membranas poliméricas - DOI: 10.4025/actascitechnol.v26i2.1493

In this work polymeric membranes were produced seeking the drinkableness of waters contaminated by the Escherichia coli bacteria removal. This bacterium was chosen because it is commonly found in polluted water and its control indicated by the Ministry of Health. The process for preparing the membranes was the Phase Inversion and the membranes were prepared from a polymeric solution using either the polysulfone (PSF) or poly(vililidene fluoride) (PVDF) polymers and as solvent N,N-dimethylformamide, in accordance with a factorial planning 2 3 . Samples of deionized water were contaminated with bacterial mass ( E.coli ) around 10 7 -10 8 CFU (colony unit formation) for ml, being this quite high bacterial load and of very difficult removal. The results show an E.coli removal above 95%, with a permeated flux around 300 kg/h.m 2