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Preparation and Performance Evaluation of PVC/PDA-modified Al2O3 Nanocomposite Membranes in Oily Wastewater Treatment

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Abstract

This study deals with the improvement of some characteristics of polyvinyl chloride (PVC) membrane by adding different amounts of polydopamine-modified alumina (Al2O3-PDA) nanoparticles (0.5–1.5 wt.%). The fabricated neat PVC and nanocomposite membranes were assessed in a cross-flow filtration system for the removal of oily wastewater (OW). The Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analysis confirmed the immobilization of PDA on the Al2O3 nanoparticles surfaces. In addition, the fabricated PVC nanocomposite membranes were characterized with thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), contact angle, porosity measurement, mechanical analysis and pure water flux. The DSC results showed the glass transition temperature (Tg) value of the membranes increased (~ 3%) in the presence of 0.5 wt.% of Al2O3-PDA nanoparticles. Large pores and macrovoids formed on the surface and cross-section of the membranes by the incorporation of Al2O3-PDA nanoparticles. The results revealed that incorporation 0.5 wt.% of Al2O3-PDA nanoparticles into PVC ultrafiltration membranes led to higher hydrophilicity, porosity and pure water flux. Mechanical strength was decreased about 33% by adding 1.5 wt.% Al2O3-PDA nanoparticles. The permeation flux of PVC/Al2O3-PDA-0.5 sample reached 38.2 Lm−2 h−1 with a total organic carbon (TOC) content of 56.3 mg L−1.

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Authors and Affiliations

  1. Department of Chemical Engineering, Faculty of Engineering, University of Bonab, East Azerbaijan, Velayat highway, Bonab, P.O. Box 55517- 61167, Iran

    Alireza Yousefi & Ghader Hosseinzadeh

  2. Department of Polymer Science and Engineering, Faculty of Engineering, University of Bonab, Bonab, P.O. Box 55517- 61167, Iran

    Habib Etemadi & Farid Aftabi

  3. Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave, Tehran, P.O. Box 15875-4413, Iran

    Milad Hermani

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  1. Alireza Yousefi
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HE, AY: Conceptualization, visualization, supervision, writing—original draft preparation; MH, FA, GH: Methodology, software, investigation.

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Yousefi, A., Etemadi, H., Hermani, M. et al. Preparation and Performance Evaluation of PVC/PDA-modified Al2O3 Nanocomposite Membranes in Oily Wastewater Treatment. J Inorg Organomet Polym 33, 1066–1079 (2023). https://doi.org/10.1007/s10904-023-02559-2

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