Nor Amirah Safiah, Muhamad and Nadzirah, Mohd Mokhtar and Rosmawati, Naim and Lau, Woei Jye and Nor Hafiza, Ismail (2024) Treatment of wastewater from oil palm industry in Malaysia using polyvinylidene fluoride-bentonite hollow fiber membranes via membrane distillation system. Environmental Pollution, 361 (124739). pp. 1-12. ISSN 0269-7491. (Published)
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Abstract
Membrane distillation (MD) is gaining increasing recognition within membrane-based processes for palm oil mill effluent (POME) treatment. This study aims to alter the physicochemical characteristics of polyvinylidene fluoride (PVDF) membranes through the incorporation of bentonite (B) at varying weight concentrations (ranging from 0.25 wt% to 1.0 wt%). Characterization was conducted to evaluate changes in morphology, thermal stability, surface characteristics and wetting properties of the resulting membranes. The resulting membranes were also tested using direct contact membrane distillation (DCMD) with POME as the feed solution, aiming to generate high-purity water. Results indicated that the PVDF-0.3B and PVDF-0.5B membranes achieved the highest water vapor flux. The finger-like structure and macrovoids present in these membranes aid in minimizing mass resistance during vapor transport and enhancing permeate flux. All membranes demonstrated exceptional performance in removing contaminants, eliminating total dissolved solids (TDS) and achieving over 99% rejection of chemical oxygen demand (COD), nitrate nitrogen (NN), color, and turbidity from the feed solution. The permeate water analysis showed that the PVDF-0.3B membrane had superior removal efficiency and met the standards set by the local Department of Environment (DOE). The PVDF-0.3B membrane was chosen as the preferred option because of its consistent flux and high removal efficiency. This study demonstrated that incorporating bentonite into PVDF membranes significantly enhanced their properties and performance for POME treatment.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Bentonite; Clay; Membrane distillation; Palm oil mill effluent; Polyvinylidene fluoride |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering |
| Faculty/Division: | Institute of Postgraduate Studies Centre for Bioaromatic Research (Bioaromatic Centre) Faculty of Chemical and Process Engineering Technology Faculty of Civil Engineering Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 18 Nov 2024 06:29 |
| Last Modified: | 18 Nov 2024 06:29 |
| URI: | http://umpir.ump.edu.my/id/eprint/42936 |
| Download Statistic: | View Download Statistics |
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