Abstracts - peq / coppe / ufrj

Study of Parameters on Preparation of Composite Membranes Based onActivated CarbonKarla Patricia Macedo Licona*, Marcello Pojucan Magaldi Santos*, Amal Elzubair Eltom**and José Carlos da Rocha** National Institute of Technology** Metallurgical and Materials Engineering Program, COPPE/UFRJIn this work, membranes based on activated carbons have been studied, and because of thelarge surface area and, consequently, adsorption capacity of pores, has a wide use forpurification of liquids or gases in its fullness. The basic idea is the sophistication oftechnologic domain to obtain composite membranes based on organic resin – activatedcarbons that have apparent porosity as UF membranes. The membranes were prepared with40% epoxy resin and 60% commercial activated carbon MADECARBO® micro and mesaporous, raw state and dried at 100° C, analyzing three types of solvents (toluene, ethylacetate and ethyl alcohol). The physical properties, as Arquimedes density, showed apparentporosity between 47%-70% to raw carbon and 49%-62% to dried carbon. The microstructureof the specimens was evaluated by scanning electron microscopy, indicating goodhomogeneity of the resin-carbon interaction for both formulations with raw and driedcarbons. The flow tests were performed in a cell test for tubular membranes that simulatesparallel flow type filter. For the flow, the formulation that presented lowest results of thisproperty was the carbon dried in ethyl acetate. As for the raw carbon, the lowest flow resultobtained was the same dried carbon but dried in ethyl alcohol. From the results, it wasconcluded that this filtration systems are strongly influenced by the formulation obtainingprocess and, consequently, the microstructure plays an important role for the type offiltration obtained.