Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

Medeiros, Keila Machado de; Araújo, Edcleide Maria; Lira, Hélio Lucena; Lima, Diego de Farias; Lima, Carlos Antônio Pereira de

doi:10.1590/1980-5373-mr-2016-0242

Cited by 26 publications

(13 citation statements)

References 56 publications

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“…Thus, it was evident the presence of the clay changes the quantity and uniformity of the pores. As observed by Medeiros 35 , the addition of clay particles in the membrane structure modifies the pore morphology on the membrane surface.…”

Section: Resultsmentioning

confidence: 79%

Coagulation Bath in The Production of Membranes of Nanocomposites Polyamide 6/Clay

et al. 2018

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Membranes of polyamide 6 and its nanocomposites with 3 and 5% of clay were obtained by the phase inversion method using distilled water and solvent as the coagulation bath, 10 and 30% of acid was used, in order to change the membranes morphology/porosity. By XRD analysis, the obtained nanocomposites showed an exfoliated and/or partially exfoliated structure, it was also seen two characteristics peaks of the polyamide 6 phases (α and γ). For the membranes, the characteristic peak γ of the membrane disappeared, being evident the peaks α 1 and α 2. By SEM the PA6 membrane almost doesn't have pores in its surface, with an addition of clay had an increase in the quantity of surface pores. In the cross section of the PA6 membrane, an extremely thin selective layer, adding the clay the selective layer became thicker and a better defined porous support was obtained. From the acid in the coagulation bath the PA6 membrane continued with a few pores structure. For the nanocomposites there was an increase in size and a better uniformity of the pores. In the cross section the presence of the bath decrease the membrane filtering, also modifying a uniformity of the pores.

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Section: Resultsmentioning

confidence: 79%

Coagulation Bath in The Production of Membranes of Nanocomposites Polyamide 6/Clay

et al. 2018

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“…In general, the yield of the membranes submitted to the water-oil emulsion flow, obtained significant oil reductions in the permeate collected 33 . Where the membrane with 3% CLNa obtained a lower final concentration of oil in the permeate of 26.6 mg.L -1 .…”

Section: Resultsmentioning

confidence: 90%

Polyethersulfone Hollow Fiber Membranes Developed for Oily Emulsion Treatment

et al. 2019

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Polyethersulfone (PES) hollow fiber membranes were produced, containing 3% of two types of clay (Brasgel PA-MMT and Cloisite NA-CLNa), in order to modify the characteristics of the polyethersulfone membrane. By means of the X-ray diffraction, it was possible to observe an exfoliated and/or partially exfoliated structure in the membranes containing clay. From the analysis of contact angle, it was possible to notice an increase in the hydrophilicity of the membrane with the introduction of the clay. Through scanning electron microscopy (SEM), the morphology of the porous support of the membrane was modified with addition of clay, favoring greater uniformity of the pores and fingers. In the flow measurements with distilled water, the membranes with clay obtained the highest flows, being the greater flow with the Cloisite Na clay (~22 L/h.m 2) and was in agreement with the contact angle results. In the analysis of permeation with the oily emulsion, the membrane with Brasgel PA clay in its structure presented the greatest flow (~16 L/h.m 2) and the membrane with Cloisite Na presented the greatest yield (78.28%). Therefore, the clay acted by modifying both the morphology and the hydrophilicity of the polyethersulfone membrane, improving flow and yield.

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“…Diversos estudos (ASEMPOUR et al, 2018;BANO et al, 2015;SALEH;GUPTA, 2012;YU et al, 2010) abordam o uso das poliamidas como material para preparo de membranas poliméricas por meio da técnica de inversão de fases. Medeiros et al(MEDEIROS et al, 2017)…”

Section: Membranas Poliméricasunclassified

ESTUDO DO EMPREGO DE PINHÃO PROVENIENTE DA Araucaria angustifolia (Bertol.) O. Kuntze) PARA PRODUÇÃO DE VODCA

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Geração De Conhecimento E Tecnologia Voltados À Aplicação Em Processos Químicos E Bioquímicos

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Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

Cited by 26 publications

References 56 publications

Coagulation Bath in The Production of Membranes of Nanocomposites Polyamide 6/Clay

Coagulation Bath in The Production of Membranes of Nanocomposites Polyamide 6/Clay

Polyethersulfone Hollow Fiber Membranes Developed for Oily Emulsion Treatment

ESTUDO DO EMPREGO DE PINHÃO PROVENIENTE DA Araucaria angustifolia (Bertol.) O. Kuntze) PARA PRODUÇÃO DE VODCA

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