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TitleEffects of coconut granular activated carbon pretreatment on membrane filtration in a gravitational driven process to improve drinking water quality
Author(s)Silva, Flávia Vieira da
Yamaguchi, Natália Ueda
Lovato, Gilselaine Afonso
Silva, Fernando Alves da
Reis, Miria Hespanhol Miranda
Amorim, M. T. Pessoa de
Tavares, Célia Regina Granhen
Bergamasco, Rosangêla
KeywordsWater quality
Activated carbon
Issue date2012
PublisherTaylor & Francis
JournalEnvironmental Technology
Abstract(s)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 Fourier transform infrared spectroscopy analyses. The applied processes (membrane and GAC + membrane) were evaluated regarding permeate flux, fouling percentage, pH and removal of Escherichia coli, colour, turbidity and free chlorine. The obtained results for filtrations with and without GAC pretreatment were similar in terms of water quality. GAC pretreatment ensured higher chlorine removals, as well as higher initial permeate fluxes. This system, applying GAC as a pretreatment and a gravitational driven membrane filtration, could be considered as an alternative point-of-use treatment for water destined for human consumption.
Publisher version
AccessOpen access
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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