Hybrid PVDF/PANI Membrane for Removal of Dyes from Textile Wastewater

Abstract

Treatment of textile wastewater has been a matter of considerable interest because of the potential toxicity, colloidal stability, and deformable nature of dyes. Herein, a novel polyaniline (PANI)/polyvinylidene fluoride (PVDF) hybrid membrane is developed to remove textile wastewater dyes. The hybrid membrane's contact angle decreases by increasing the concentration of polyaniline in the PVDF matrix, enhancing the hybrid membrane's hydrophilicity. Membrane properties, including porosity, antifouling property, solvent content, and pure water flux, are improved in the hybrid membrane compared with neat PVDF membranes. The purified water flux is enhanced from 28 to 47 L m−2 h, which indicates the impact of PANI on the hydrophilicity of the hybrid membranes. Among the hybrid membranes, 3P exhibits 85% dye rejection at 0.1 MPa operating pressure. Hence, the incorporation of PANI in the PVDF matrix is proposed to enhance the hybrid membrane's dye rejection and antifouling properties.

Incorporating Mesoporous Anatase TiO2 Spheres to Conductive Carbon Black Filled PVDF Membrane for Self-Cleaning Photo(electro)catalytic Filtration

“…The water flux and the decolorization rates of MB were monitored during the PEC-MF process. The value of permeation flux of PEC membranes was calculated according to eq J = V / false( t × A false) where J (L/m 2 ·h), V (L), t (h), and A (m 2 ) are the water flux, permeate volume, test time (2 min), and effective area of membrane (50 mm × 50 mm), respectively.…”

“…The polyvinylidene fluoride (PVDF) membrane is widely applied in micro/ ultrafiltration owing to its unique characteristics, such as high mechanical strength, excellent aging resistance, and filmforming ability. 4,9 However, during the MF process, the continuous absorption and accumulation of foulants on the hydrophobic surface of the PVDF membrane inevitably result in membrane pollution. 10 MF combined with TiO 2 -mediated heterogeneous photocatalysis is a feasible method to alleviate membrane fouling and improve the self-cleaning capability.…”

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

“…Calcium alginate hydrogel provided a matrix for polyaniline/sawdust [ 86 ]. A supporting polymer was also introduced when the adsorbent was a part of a membrane [ 40 , 74 , 76 , 79 , 83 , 84 , 85 ].…”

“…Ternary systems are more useful for practical applications ( Table 2 ) but also more difficult to interpret because each component can participate in dye adsorption. The latest examples are: attapulgite/ g -carbon nitride [ 112 ]; bismuth(III) oxyiodide/reduced graphene oxide [ 10 ]; cerium dioxide/polystyrene [ 113 ]; cobalt/zinc ferrite [ 90 ]; sodium bismuthate/polycarbonate [ 114 ]; titanium dioxide/cadmium sulfide [ 97 ]; titanium dioxide/chitosan [ 115 ]; titanium dioxide/poly(vinylidene fluoride) [ 84 , 85 ]; zinc oxide/graphene oxide/viscose [ 116 ]; zinc/magnetite [ 117 , 118 ].…”

Special Issue on Theoretical and Applied Mechanics of Functional Materials and Structures

“…This special issue is aimed at further contributing to the understanding of theoretical and applied mechanics of functional materials and structures. It contains 18 accepted articles, including one review, with topics related to piezoelectric [1,2] , ferromagnetic [3,4] , ferroelastic [5] , advanced polymer [6][7][8] or polymer matrix composite [9][10][11][12] , and inhomogeneous [13] or functionally graded [14][15][16][17] materials. All aspects (theoretical, computational and experimental studies) of mechanics, from state-of-the-art fundamental research to applied research and applications in emerging technologies, are included.…”