3 documents found, page 1 of 1
Effects of coconut granular activated carbon pretreatment on membrane filtratio...
Silva, Flávia Vieira da; Yamaguchi, Natália Ueda; Lovato, Gilselaine Afonso; Silva, Fernando Alves da; Reis, Miria Hespanhol MirandaThis study evaluates the performance of a polymeric microfiltration membrane, as well as its combination with a coconut granular activated carbon (GAC) pretreatment, in a gravitational filtration module, to improve the quality of water destined to human consumption. The proposed membrane and adsorbent were thoroughly characterized using instrumental techniques, such as contact angle, Brunauer–Emmett–Teller) and...
Application of modified membranes in drinking water treatment
Silva, Flávia Vieira da; Yamaguchi, Natália Ueda; Vieira, Angelica M. Salcedo; Amorim, M. T. Pessoa de; Tavares, C. J.; Tavares, Célia Regina GranhenThis paper presents filtration results obtained with commercial acetate membrane with a pore diameter of 0.45 μm, unmodified and modified with TiO2, bearing in mind drinking water treatment. The experimental filtration set-up that was used consisted in the gravitational filtration system, whereas the accomplished tests that were endured consisted of hydraulic permeability of the modified and unmodified membrane...
Drinking water treatment in a gravimetric flow system with TiO2 coated membranes
Bergamasco, Rosangêla; Silva, Flávia Vieira da; Arakawa, Flávia Sayuri; Yamaguchi, Yamaguchi; Reis, Miria Hespanhol Miranda; Tavares, C. J.This paper presents filtration results for drinking water treatment obtained with a commercial cellulose acetate membrane of 0.45 μm pore diameter, with and without TiO2 coating. The deposition of titanium dioxide thin films onto membrane surface was made by pulsed-frequency d.c. reactive magnetron sputtering at room temperature from a high purity Ti target in Ar/O2/N2 atmosphere, at different conditions for ca...