Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment

Al-Jadir, Thaer; Alardhi, Saja Mohsen; Alheety, Mustafa A.; Najim, Aya; Salih, Issam K.; Al-Furaiji, Mustafa; Alsalhy, Qusay F.

doi:10.12911/22998993/154770

Cited by 13 publications

(3 citation statements)

References 27 publications

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“…Moreover, the TiO 2 surface features a thin layer of water molecules, which gives it a high degree of hydrophilicity. Moreover, the photocatalytic nature of TiO 2 aid to improve its self-cleaning ability to keep its surface clean [95]. In the year 2014, Emadzadeh et al [75] added TiO 2 nanoparticles, in a range of 0-0.9 wt.%, to a matrix of a PSF substrate to minimize ICP.…”

Section: Tio 2 Nanoparticlementioning

confidence: 99%

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

et al. 2023

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Forward osmosis (FO) is a low-energy treatment process driven by osmosis to induce the separation of water from dissolved solutes/foulants through the membrane in hydraulic pressure absence while retaining all of these materials on the other side. All these advantages make it an alternative process to reduce the disadvantages of traditional desalination processes. However, several critical fundamentals still require more attention for understanding them, most notably the synthesis of novel membranes that offer a support layer with high flux and an active layer with high water permeability and solute rejection from both solutions at the same time, and a novel draw solution which provides low solute flux, high water flux, and easy regeneration. This work reviews the fundamentals controlling the FO process performance such as the role of the active layer and substrate and advances in the modification of FO membranes utilizing nanomaterials. Then, other aspects that affect the performance of FO are further summarized, including types of draw solutions and the role of operating conditions. Finally, challenges associated with the FO process, such as concentration polarization (CP), membrane fouling, and reverse solute diffusion (RSD) were analyzed by defining their causes and how to mitigate them. Moreover, factors affecting the energy consumption of the FO system were discussed and compared with reverse osmosis (RO). This review will provide in-depth details about FO technology, the issues it faces, and potential solutions to those issues to help the scientific researcher facilitate a full understanding of FO technology.

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Section: Tio 2 Nanoparticlementioning

confidence: 99%

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

et al. 2023

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“…This is primarily because of the droplet sizes for emulsified oils, which are usually smaller than 10 µm [ 19 ] and lead to complex treatment processes [ 20 ]. Therefore, many researchers have tried to discover effective methods to treat emulsified oily wastewater [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

A Competitive Study Using Electrospinning and Phase Inversion to Prepare Polymeric Membranes for Oil Removal

et al. 2023

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Polyacrylonitrile (PAN) is a popular polymer that can be made into membranes using various techniques, such as electrospinning and phase inversion. Electrospinning is a novel technique that produces nonwoven nanofiber-based membranes with highly tunable properties. In this research, electrospun PAN nanofiber membranes with various concentrations (10, 12, and 14% PAN/dimethylformamide (DMF)) were prepared and compared to PAN cast membranes prepared by the phase inversion technique. All of the prepared membranes were tested for oil removal in a cross-flow filtration system. A comparison between these membranes’ surface morphology, topography, wettability, and porosity was presented and analyzed. The results showed that increasing the concentration of the PAN precursor solution increases surface roughness, hydrophilicity, and porosity and, consequently, enhances the membrane performance. However, the PAN cast membranes showed a lower water flux when the precursor solution concentration increased. In general, the electrospun PAN membranes performed better in terms of water flux and oil rejection than the cast PAN membranes. The electrospun 14% PAN/DMF membrane gave a water flux of 250 LMH and a rejection of 97% compared to the cast 14% PAN/DMF membrane, which showed a water flux of 117 LMH and 94% oil rejection. This is mainly because the nanofibrous membrane showed higher porosity, higher hydrophilicity, and higher surface roughness compared to the cast PAN membranes at the same polymer concentration. The porosity of the electrospun PAN membrane was 96%, while it was 58% for the cast 14% PAN/DMF membrane.

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“…Recently, a tremendous amount of study has been dedicated to the expulsion of effluents containing colors with intrinsic toxicity [6]. Adsorption [7], biodegradation by microorganisms [8], coagulation-flocculation [9], electrochemical methods [10], filtration and membrane separation [11][12][13], liquid-liquid extraction [14], ozonation [15], photocatalytic decolorization [16], and wet air oxidation [17] are some of the dye elimination methods that can be used to decrease the environmental impact.…”

Section: Introductionmentioning

confidence: 99%

Colored Wastewater Treatment by Clathrate Hydrate Technique

Mohammed

Al-Humairi

Almukhtar

et al. 2023

Water

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Numerous recent studies have shown that discharging colored wastewater into the environment causes contamination, which has adverse impact due to textile, dyeing, and food industries. The current study presents experimental research on the clathrate hydrate technique used for producing pure water from of wastewater contaminated by dyes. Under constant starting conditions, the clathrate formation for binary (water + refrigerant gas) and ternary (water + refrigerant gas + promotor) systems were studied. The R134a gas was used along with Cyclohexane (2.5 vol%), Tween 80 (100 ppm), and silica gel powder as promotors (100 ppm). Moreover, povidone-iodine (500, 2500, and 5000 ppm) and potassium permanganate (10, 50, and 100 ppm) were used as colored compounds in order to prepare synthetic wastewater (model wastewater). The production of hydrates, which rapidly captured the refrigerant gas molecules in the solid phase, was primarily responsible for the pressure drop. Both povidone-iodine and potassium permanganate have a negligible impact on the hydrate formation rates. It was found that the concentration of povidone-iodine and potassium permanganate in the produced water was decreased.As far as we know, the method of using clathrate hydrate to remove the dyes in water has never been investigated. The results showed that the povidone-iodine removal efficiency ranged between 86% and 92%, and the potassium permanganate removal efficiency ranged between 90% and 95%. The removal efficiency was improved by adding promotors, which increased the dissolved gas quantity and the amount of water hydrates. The maximum removal efficiency was accomplished using silica gel powder and cyclohexane, which are more significant than in pure water and Tween 80. This study demonstrated the viability of the clathrate hydrate technique as a green technology for the treatment of colored wastewater effluents from different industries.

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Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment

Cited by 13 publications

References 27 publications

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

A Competitive Study Using Electrospinning and Phase Inversion to Prepare Polymeric Membranes for Oil Removal

Colored Wastewater Treatment by Clathrate Hydrate Technique

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