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Effects of coconut granular activated carbon pretreatment on membrane filtratio...

This 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...

Drinking water treatment in a gravimetric flow system with TiO2 coated membranes

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...

Application of modified membranes in drinking water treatment

Ultrafiltração como processo de tratamento para o reúso de efluentes de laticínios

O trabalho objetivou testar duas membranas de ultrafiltração com diferentes tamanhos de poros (uma membrana espiral de polieterssulfona e corte de 5-8 kDa e uma membrana tubular de PVDF com corte de 30-80 kDa) para a recuperação de nutrientes do efluente de laticínios, procurando avaliar o comportamento de fluxo e a remoção de parâmetros de controle de poluição. Os resultados demonstraram uma remoção de DQO pró...