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Moradi S, Zinatizadeh AA, Zinadini S. Post-treatment of soft drink industrial wastewater using a new antibacterial ultra-filtration membrane prepared of Polyethersulfone blended with boehmite-tannic acid-graphene quantum dot. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e10997. [PMID: 38385894 DOI: 10.1002/wer.10997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/05/2024] [Accepted: 01/25/2024] [Indexed: 02/23/2024]
Abstract
Polymeric membranes have garnered great interest in wastewater treatment; however, fouling is known as their main limitation. Therefore, the blending of hydrophilic nanoparticles in polymeric membranes' structure is a promising approach for fouling reduction. Herein, a hydrophilic boehmite-tannic acid-graphene quantum dot (BM-TA-GQD) nanoparticle was synthesized and blended in a polyethersulfone polymeric membrane in different percentages. The fabricated membranes were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) images, water contact angle, porosity measurement, and antibacterial and antifouling properties. Surface SEM images of the modified membranes showed good dispersion of nanoparticles up to 0.5 wt%, which resulted in hydrophilicity and pure water flux enhancement. Based on AFM images, the mean roughness (Sa) of the fabricated membranes decreased from 2.07 to 0.84 nm for the bare and optimum membranes, respectively. In terms of performance, increasing the nanoparticle percentages up to 0.5 wt% resulted in the flux recovery ratio developing from 44.58% for the bare membrane to 71.35% for the 0.5 wt% BM-TA-GQD/PES membrane (optimum membrane). The antibacterial property of fabricated membranes was studied against biologically treated soft drink industrial wastewater (BTSDIW) as a bacterial source. The results showed that the turbidity of solutions containing permeated wastewater from the modified membranes (0.1, 0.5, and 1 wt% of BM-TA-GQD) was lower than that obtained from the unmodified membrane. These results confirmed the antibacterial properties of fabricated membranes. Finally, the optimal membrane (0.5 wt% BM-TA-GQD) was examined for post-treatment of the BTSDIW. An effluent COD of 13 mg/L and turbidity of 2 NTU showed a successful performance of the filtration process. PRACTITIONER POINTS: Ultrafiltration PES membranes were modified by different loadings of BM-TA-GQD. Hydrophilicity improvement was achieved by adding BM-TA-GQD nanoparticles. Expansion of size and number of macro-voids in modified membranes was confirmed. Membrane roughness was reduced in the BM-TA-GQD blended membranes. The optimum membrane was efficient in COD and turbidity removal.
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Affiliation(s)
- Sahar Moradi
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Ali Akbar Zinatizadeh
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
- Environmental Pollution and Engineering Group, Environmental Research Center (ERC), Razi University, Kermanshah, Iran
- Australian Centre for Water and Environmental Biotechnology (ACWEB, formerly AWMC), University of Queensland, Brisbane, Queensland, Australia
| | - Sirus Zinadini
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
- Environmental Pollution and Engineering Group, Environmental Research Center (ERC), Razi University, Kermanshah, Iran
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AL-Rajabi MM, Almanassra IW, Khalil AKA, Atieh MA, Laoui T, Khalil KA. Facile Coaxial Electrospinning Synthesis of Polyacrylonitrile/Cellulose Acetate Nanofiber Membrane for Oil-Water Separations. Polymers (Basel) 2023; 15:4594. [PMID: 38232019 PMCID: PMC10708555 DOI: 10.3390/polym15234594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/17/2023] [Accepted: 11/28/2023] [Indexed: 01/19/2024] Open
Abstract
Oil-contaminated water and industrial oily wastewater discharges have adversely affected aquatic ecosystems and human safety. Membrane separation technology offers a promising solution for effective oil-water separation. Thus, a membrane with high surface area, hydrophilic-oleophobic properties, and stability is a promising candidate. Electrospinning, a straightforward and efficient process, produces highly porous polymer-based membranes with a vast surface area and stability. The main objective of this study is to produce hydrophilic-oleophobic polyacrylonitrile (PAN) and cellulose acetate (CA) nanofibers using core-shell electrospinning. Incorporating CA into the shell of the nanofibers enhances the wettability. The core PAN polymer improves the electrospinning process and contributes to the hydrophilicity-oleophobicity of the produced nanofibers. The PAN/CA nanofibers were characterized by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, X-ray diffraction, and surface-wetting behavior. The resulting PAN/cellulose nanofibers exhibited significantly improved surface-wetting properties, demonstrating super-hydrophilicity and underwater superoleophobicity, making them a promising choice for oil-water separation. Various oils, including gasoline, diesel, toluene, xylene, and benzene, were employed in the preparation of oil-water mixture solutions. The utilization of PAN/CA nanofibers as a substrate proved to be highly efficient, confirming exceptional separation efficiency, remarkable stability, and prolonged durability. The current work introduces an innovative single-step fabrication method of composite nanofibers, specially designed for efficient oil-water separation. This technology exhibits significant promise for deployment in challenging situations, offering excellent reusability and a remarkable separation efficiency of nearly 99.9%.
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Affiliation(s)
- Maha Mohammad AL-Rajabi
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, UniMAP, Arau 02600, Perlis, Malaysia
- Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, UniMAP, Arau 02600, Perlis, Malaysia
| | - Ismail W. Almanassra
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
| | - Abdelrahman K. A. Khalil
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
| | - Muataz Ali Atieh
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
- Chemical and Water Desalination Engineering Program, College of Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Tahar Laoui
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
- Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Khalil Abdelrazek Khalil
- Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; (M.M.A.-R.); (I.W.A.); (A.K.A.K.); (M.A.A.); (T.L.)
- Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
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