Title:Impact of Nanoclays on Polyvinylidene Fluoride Mixed Matrix Membranes
for the Efficient Treatment of Oily Wastewater
Volume: 15
Issue: 1
Author(s): Lukka Thuyavan Yogarathinam, Ahmad Fauzi Ismail*, G. Arthanareeswaran*, Mohd Ariff Bin Azali, Mohd Khairul Naim Bin Ramli and Ashraf Rushdan
Affiliation:
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti
Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
- Membrane Research Laboratory, Department of Chemical Engineering,
National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India
Keywords:
Fouling, halloysite, montmorillonite (MMT), oil-water filtration polyvinylidene fluoride, nanoclays, mixed matrix membranes.
Abstract:
Background: Membrane technology demonstrates a sustainable methodology for water reclamation
from oily wastewater but is prone to fouling during longer filtration runs. In this study, fouling-
resistant polyvinylidene fluoride (PVDF) mixed matrix membranes (MMMs) containing
nanoclays, such as halloysite (HT) and montmorillonite (MMT), were fabricated for the effective
treatment of oily wastewater.
Methods: The phase inversion technique was followed for the fabrication of HT-PVDF and MMTPVDF
MMMs. Physiochemical characterization and filtration experiments were studied to evaluate
the influence of nanoclays on PVDF membrane performance.
Results: Fourier transform infrared spectroscopy (FTIR) and morphology analyses indicated that both
nanoclays were layered and structured with abundant hydrophilic functional groups. The dispersions of
HT and MMT were confirmed by surface morphology and topography analysis of PVDF MMMs. The
hydrophilicity property was improved in HT-PVDF and MMT-PVDF MMMs, which was evident in
the contact angle analysis. Among the membranes, MMT-PVDF MMMs held a higher water permeability
of 2.59 x10-8 m/s.kPa. For oil-water filtration, HT-PVDF and MMT-PVDF MMMs displayed
higher normalized flux with a maximum rejection of more than 95%.
Conclusion: Overall, MMT would be a cost-effective nanofiller for developing antifouling PVDF
MMMs against oil-water filtration.