Produção Nacional
Revisado por pares
Facile filtration system to remove Diuron in aqueous solutions
2020; Elsevier BV; Volume: 404; Linguagem: Inglês
10.1016/j.jhazmat.2020.124163
ISSN1873-3336
AutoresNatália de Camargo Lima Beluci, Tássia Rhuna Tonial dos Santos, Jossano Saldanha Marcuzzo, Rosângela Bergamasco,
Tópico(s)Electrospun Nanofibers in Biomedical Applications
ResumoExposure to the herbicide Diuron may cause many undesirable effects on human health, leading to an increasing concern to preserve the quality of water intended for consumption. Therefore, the present study evaluated the removal of this contaminant in a gravitational filtration system, using different types of activated carbon fiber felt (ACFF) supported on the microfiltration membrane. The properties of the ACFF samples were investigated by X-Ray diffraction (XRD), Raman spectroscopy, Nitrogen adsorption assays, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and zeta potential analysis. The characterizations suggested that ACFF could be appropriate to remove Diuron in aqueous solutions. Among samples, the one denominated as ACFF-CO2(200)H2O showed the best performance during the permeation tests. In the first filtration cycle, the system took about 530 min to reach the saturation point (removal ceased), and 190 min for the second cycle. Along the process, the contaminant solution fluxes were higher than 100 L h– 1 m2 and reached an average final removal of ~ 50%. These results were excellent, as the proposed treatment consists of a simple gravitational filtration system, easy to operate, and low-cost.
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