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

Hifza Nawaz,Azeem Ullah,Muhammad Tauseef Khawar,Iqra Nawaz,Xuqing Liu,Marek Nikiel,Muhammad Umar,Humaira Razzaq,Muhammad Siddiq

doi:10.1002/adem.202100719

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.

Highlights

The pollution of the ecosystem, including air, water, and soil, is a severe concern in this current world
We observed that the synthesized polyvinylidene fluoride (PVDF) membrane contains fewer pores on the surface, whereas the hybrid membranes have increased the number of pores with increasing polyaniline content.[24]
In this study, we investigated the properties and applicability of hybrid membrane based on poly/polyaniline for the treatment of textile wastewater

Summary

Introduction

The pollution of the ecosystem, including air, water, and soil, is a severe concern in this current world. Water contributes to 78 % of the earth's surface and serves as a critical component for the human body and other living organisms. These facts show the essential relation of human health with water and the ecosystem. The provision of clean water is necessary for every human being and their growth.[1] Wastewater released from the textile industry is one of the extensive sources of pollution for water and soil. For the protection of aquatic ecosystems, harmless treatment has tremendous importance in textile wastewater treatment. The major problem associated with textile wastewater is increased color concentration, leading to the reduction of light transmittance in water, limiting aquatic life growth.[3]

Methods

Results

Conclusion