Modification of reinforced hollow fiber membranes with WO3 nanosheets for treatment of textile wastewater by membrane bioreactor

Ismail Koyuncu; Bahriye Eryildiz; Recep Kaya; Yucel Karakus; Fatemeh Zakeri; Alireza Khataee; Vahid Vatanpour

doi:10.1016/j.jenvman.2022.116758

Modification of reinforced hollow fiber membranes with WO₃ nanosheets for treatment of textile wastewater by membrane bioreactor

J Environ Manage. 2023 Jan 15;326(Pt B):116758. doi: 10.1016/j.jenvman.2022.116758. Epub 2022 Nov 17.

Authors

Ismail Koyuncu¹, Bahriye Eryildiz¹, Recep Kaya¹, Yucel Karakus¹, Fatemeh Zakeri², Alireza Khataee³, Vahid Vatanpour⁴

Affiliations

¹ National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey.
² Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037, Jiangsu, China.
³ Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey.
⁴ National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey; Department of Environmental Engineering, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey; Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran.

PMID: 36402019
DOI: 10.1016/j.jenvman.2022.116758

Abstract

In this study, performance of braid reinforced hollow fiber membrane containing polyvinylidene fluoride (PVDF) embedded with tungsten trioxide (WO₃) nanosheets in a membrane bioreactor (MBR) was examined for textile wastewater treatment. The WO₃ nanosheets was synthesized and blended at different concentrations (0.1-0.02 wt%) in casting solutions of the membranes. The WO₃ nanosheets characterized using various tests such as XRD, FTIR, SEM, EDS, dot-mapping, and TEM. Furthermore, the effects of the increased WO₃ nanosheets into the PVDF matrix on the membrane morphology, hydrophilicity, permeability, antifouling, and COD and color removal efficiency was investigated. The addition of 0.1 wt% of the nanosheets reduces the water contact angle from 69.3° to 62.5° while increasing overall porosity from 37.5 to 43.2%. COD and color removal for PVDF/0.10 wt% WO₃ membrane was between 86-89% and 72-76%, respectively. While the TMP of modified WO₃ membranes did not significantly increase due to antimicrobial properties of the WO₃ nanosheets, the TMP of the pure PVDF membrane increase, indicating considerable cake layer fouling. The results of this study showed that modification of PVDF braid reinforced hollow fiber membrane using WO₃ nanosheets is promising membrane for MBR systems.

Keywords: Antifouling; Membrane bioreactor; Nanosheets; Reinforced hollow fiber.

MeSH terms

Bioreactors
Membranes, Artificial*
Textiles
Wastewater*

Substances

Waste Water
polyvinylidene fluoride
Membranes, Artificial