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Al-Kaisy HA, Al-Tamimi BH, Hamad QA, Abed MS. Investigation of Roughness, Morphology, and Wettability Characteristics of Biopolymer Composite Coating on SS 316L for Biomedical Applications. Int J Biomater 2024; 2024:5568047. [PMID: 38268700 PMCID: PMC10807940 DOI: 10.1155/2024/5568047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 01/26/2024] Open
Abstract
This project aims to create a 316L stainless steel coated with a biocomposite based on chitosan for use in the biomedical industry. To completely coat the material, the dip-coating technique was used to apply plain chitosan, chitosan nanosilver, chitosan biotin, and chitosan-nanosilver-biotin in that order. This coating's surface morphology was investigated with field emission scanning electron microscopy (FESEM). Surface roughness, average size distribution, and 2D and 3D surface tomography were all investigated using scanning probe microscopy and atomic force microscopy (SPM and AFM). The Fourier transform infrared (FTIR) spectroscopy technique was used to quantify changes in functional groups. To evaluate the coated samples' wettability, contact angle measurements were also performed. The chitosan (CS) + nanosilver, CS + biotin, and CS + biotin + nanosilver-coated 316L stainless steel showed roughness values of about 8.68, 4.21, and 3.3 nm, respectively, compared with the neat chitosan coating, which exhibits 12 nm roughness, indicating a strong effect of biotin and nanosilver on surface topography whereas the coating layers were homogenous, measuring around 33 nm in thickness. For CS + nanosilver and CS + biotin, the average size of agglomerates was approximately 444 nm and 355 nm, respectively. The coatings showed adequate wettability for biomedical applications, were homogeneous, and had no cracks. Their contact angles were around 51-75 degrees. All of these results point to the composite coating's intriguing potential for use in biological applications.
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Affiliation(s)
- Hanaa A. Al-Kaisy
- Department of Materials Engineering, University of Technology, Baghdad, Iraq
| | - Basma H. Al-Tamimi
- Department of Materials Engineering, University of Technology, Baghdad, Iraq
| | - Qahtan A. Hamad
- Department of Materials Engineering, University of Technology, Baghdad, Iraq
| | - Mayyadah S. Abed
- Department of Materials Engineering, University of Technology, Baghdad, Iraq
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2
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Naji MA, Salimi-Kenari H, Alsalhy QF, Al-Juboori RA, Huynh N, Rashid KT, Salih IK. Novel MXene-Modified Polyphenyl Sulfone Membranes for Functional Nanofiltration of Heavy Metals-Containing Wastewater. MEMBRANES 2023; 13:357. [PMID: 36984744 PMCID: PMC10052984 DOI: 10.3390/membranes13030357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
In this work, MXene as a hydrophilic 2D nanosheet has been suggested to tailor the polyphenylsulfone (PPSU) flat sheet membrane characteristics via bulk modification. The amount of MXene varied in the PPSU casting solution from 0-1.5 wt.%, while a series of characterization tools have been employed to detect the surface characteristics changes. This included atomic force microscopy (AFM), scanning electron microscopy (SEM), contact angle, pore size and porosity, and Fourier-transform infrared spectroscopy (FTIR). Results disclosed that the MXene content could significantly influence some of the membranes' surface characteristics while no effect was seen on others. The optimal MXene content was found to be 0.6 wt.%, as revealed by the experimental work. The roughness parameters of the 0.6 wt.% nanocomposite membrane were notably enhanced, while greater hydrophilicity has been imparted compared to the nascent PPSU membrane. This witnessed enhancement in the surface characteristics of the nanocomposite was indeed reflected in their performance. A triple enhancement in the pure water flux was witnessed without compromising the retention of the membranes against the Cu2+, Cd2+ and Pd2+ feed. In parallel, high, and comparable separation rates (>92%) were achieved by all membranes regardless of the MXene content. In addition, promising antifouling features were observed with the nanocomposite membranes, disclosing that these nanocomposite membranes could offer a promising potential to treat heavy metals-containing wastewater for various applications.
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Affiliation(s)
- Mohammed Azeez Naji
- Faculty of Engineering and Technology, University of Mazandaran, Babolsar 4741613534, Iran
| | - Hamed Salimi-Kenari
- Faculty of Engineering and Technology, University of Mazandaran, Babolsar 4741613534, Iran
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
| | - Raed A. Al-Juboori
- NYUAD Water Research Centre, New York University Abu Dhabi Campus, Abu Dhabi P.O. Box 129188, United Arab Emirates
| | - Ngoc Huynh
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 11000, Aalto, FI-00076 Espoo, Finland
| | - Khalid T. Rashid
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
| | - Issam K. Salih
- Department of Chemical Engineering and Petroleum Industries, AlMustaqbal University College, Babylon 51001, Iraq
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3
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Awad ES, Abdulla SM, Sabirova TM, Alsalhy QF. Membrane techniques for removal detergents and petroleum products from carwash effluents: a review. CHIMICA TECHNO ACTA 2023. [DOI: 10.15826/chimtech.2023.10.1.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
One of the most significant urban services is the carwash, which generates large amounts of wastewater containing a variety of pollutants, including sand, gravel, suspended solids, surfactants, oil products, diesel cleaners, etc., that may cause environmental pollution when transferred to the sewage system without any treatment. The effective treatment is crucial to prevent environmental pollution as well as to recycle the water source. Contaminants are removed from carwash effluent using a variety of treatment technologies. This review focuses on identifying and comparing efficiency of using advanced commercial and modified membrane filtration techniques, meeting discharge standard regulations, to treat carwash impurities, especially detergents/surfactants (anionic surfactant) and petroleum products (oil/grease). The results of this review indicate that ultrafiltration membrane (UF) is the most common membrane filtration technology for carwash wastewater treatment. Additionally, the adoption of traditional pre-treatment processes may be advantageous before utilization of membrane process for treating carwash wastewater; although conventional treatment processes can produce a high quality of effluent, they are less effective than membrane systems.
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Al-Maliki RM, Alsalhy QF, Al-Jubouri S, Salih IK, AbdulRazak AA, Shehab MA, Németh Z, Hernadi K. Classification of Nanomaterials and the Effect of Graphene Oxide (GO) and Recently Developed Nanoparticles on the Ultrafiltration Membrane and Their Applications: A Review. MEMBRANES 2022; 12:membranes12111043. [PMID: 36363598 PMCID: PMC9696631 DOI: 10.3390/membranes12111043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/15/2022] [Accepted: 10/18/2022] [Indexed: 05/12/2023]
Abstract
The emergence of mixed matrix membranes (MMMs) or nanocomposite membranes embedded with inorganic nanoparticles (NPs) has opened up a possibility for developing different polymeric membranes with improved physicochemical properties, mechanical properties and performance for resolving environmental and energy-effective water purification. This paper presents an overview of the effects of different hydrophilic nanomaterials, including mineral nanomaterials (e.g., silicon dioxide (SiO2) and zeolite), metals oxide (e.g., copper oxide (CuO), zirconium dioxide (ZrO2), zinc oxide (ZnO), antimony tin oxide (ATO), iron (III) oxide (Fe2O3) and tungsten oxide (WOX)), two-dimensional transition (e.g., MXene), metal-organic framework (MOFs), covalent organic frameworks (COFs) and carbon-based nanomaterials (such as carbon nanotubes and graphene oxide (GO)). The influence of these nanoparticles on the surface and structural changes in the membrane is thoroughly discussed, in addition to the performance efficiency and antifouling resistance of the developed membranes. Recently, GO has shown a considerable capacity in wastewater treatment. This is due to its nanometer-sized holes, ultrathin layer and light and sturdy nature. Therefore, we discuss the effect of the addition of hydrophilic GO in neat form or hyper with other nanoparticles on the properties of different polymeric membranes. A hybrid composite of various NPs has a distinctive style and high-quality products can be designed to allow membrane technology to grow and develop. Hybrid composite NPs could be used on a large scale in the future due to their superior mechanical qualities. A summary and future prospects are offered based on the current discoveries in the field of mixed matrix membranes. This review presents the current progress of mixed matrix membranes, the challenges that affect membrane performance and recent applications for wastewater treatment systems.
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Affiliation(s)
- Raghad M. Al-Maliki
- Membrane Technology Research Unit, Department of Chemical Engineering, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Department of Chemical Engineering, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
- Correspondence: (Q.F.A.); (M.A.S.)
| | - Sama Al-Jubouri
- Department of Chemical Engineering, College of Engineering, University of Baghdad, Aljadria, Baghdad 10071, Iraq
| | - Issam K. Salih
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babil 51001, Iraq
| | - Adnan A. AbdulRazak
- Membrane Technology Research Unit, Department of Chemical Engineering, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
| | - Mohammed Ahmed Shehab
- Faculty of Materials and Chemical Engineering, University of Miskolc, H-3515 Miskolc, Hungary
- Polymers and Petrochemicals Engineering Department, Basrah University for Oil and Gas, Basrah 61004, Iraq
- Correspondence: (Q.F.A.); (M.A.S.)
| | - Zoltán Németh
- Advanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of Miskolc, H-3515 Miskolc, Hungary
| | - Klara Hernadi
- Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, H-3515 Miskolc-Egyetemváros, Hungary
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Aljanabi AAA, Mousa NE, Aljumaily MM, Majdi HS, Yahya AA, AL-Baiati MN, Hashim N, Rashid KT, Al-Saadi S, Alsalhy QF. Modification of Polyethersulfone Ultrafiltration Membrane Using Poly(terephthalic acid-co-glycerol-g-maleic anhydride) as Novel Pore Former. Polymers (Basel) 2022; 14:polym14163408. [PMID: 36015666 PMCID: PMC9414477 DOI: 10.3390/polym14163408] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
In this research, poly terephthalic acid-co-glycerol-g-maleic anhydride (PTGM) graft co-polymer was used as novel water-soluble pore formers for polyethersulfone (PES) membrane modification. The modified PES membranes were characterized to monitor the effect of PTGM content on their pure water flux, hydrophilicity, porosity, morphological structure, composition, and performance. PTGM and PES/PTGM membranes were characterized by field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), and contact angle (CA). The results revealed that the porosity and hydrophilicity of the fabricated membrane formed using a 5 wt.% PTGM ratio exhibited an enhancement of 20% and 18%, respectively. Similarly, upon raising the PTGM ratio in the casting solution, a more porous with longer finger-like structure was observed. However, at optimum PTGM content (i.e., 5%), apparent enhancements in the water flux, bovine serum albumin (BSA), and sodium alginate (SA) retention were noticed by values of 203 L/m2.h (LMH), 94, and 96%, respectively. These results illustrated that the observed separation and permeation trend of the PES/PTGM membrane may be a suitable option for applications of wastewater treatment. The experimental results suggest the promising potential of PTGM as a pore former on the membrane properties and performance.
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Affiliation(s)
- Ali A. Abbas Aljanabi
- Al-Mussaib Technical College, Al-Furat Al-Awsat Technical University, Babylon 51009, Iraq
| | - Noor Edin Mousa
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsena’a Street No. 52, B. O. 35010, Baghdad 10066, Iraq
| | - Mustafa M. Aljumaily
- Department of Civil Engineering, Al-Maarif University College, Al-Ramadi 31001, Iraq
| | - Hasan Sh. Majdi
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq
| | - Ali Amer Yahya
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsena’a Street No. 52, B. O. 35010, Baghdad 10066, Iraq
| | - Mohammad N. AL-Baiati
- Department of Chemistry, College of Education for Pure Sciences, University of Kerbala, Holly Kerbala 56001, Iraq
| | - Noor Hashim
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsena’a Street No. 52, B. O. 35010, Baghdad 10066, Iraq
| | - Khaild T. Rashid
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsena’a Street No. 52, B. O. 35010, Baghdad 10066, Iraq
| | - Saad Al-Saadi
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
- Correspondence: (S.A.-S.); (Q.F.A.)
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsena’a Street No. 52, B. O. 35010, Baghdad 10066, Iraq
- Correspondence: (S.A.-S.); (Q.F.A.)
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Al-Araji DD, Al-Ani FH, Alsalhy QF. Modification of polyethersulfone membranes by Polyethyleneimine (PEI) grafted Silica nanoparticles and their application for textile wastewater treatment. ENVIRONMENTAL TECHNOLOGY 2022:1-17. [PMID: 35244524 DOI: 10.1080/09593330.2022.2049890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/22/2022] [Indexed: 05/26/2023]
Abstract
In the current work, a novel nanocomposite membrane for wastewater treatment applications has been synthesized. A hydrophilic nature nanoadditive comprised grafting polyethylenimine (PEI) molecules onto the surfaces of silica nanoparticles (SiO2 NPs) was synthesized then entrapped within a polyethersulfone polymeric matrix at disparate ratios via the classical phase inversion technique. A series of experimental tools were employed to probe the influence of SiO2-PEI on the surface topography and morphological changes, hydrophilicity, porosity, surface chemistry as well as permeation and dyes retention characteristics of the new nanocomposite. Upon increasing the nanoadditives content (up to 0.7 wt. % SiO2- PEI), clear cross-sectional changes were depicted along with a noticeable decline in the water contact angle by 29.7%. Performance evaluation measurements against synthetic dye solutions were disclosed explicit enhancement in both; retention and permeation characteristics of the nanocomposite membranes. Besides, prolonged permeation test has maintained high flux stability against real textile wastewater; implying better resistance and self-cleaning characteristics have been achieved.
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Affiliation(s)
- Dalya D Al-Araji
- Civil Engineering Department, University of Technology-Iraq, Baghdad, Iraq
| | - Faris H Al-Ani
- Civil Engineering Department, University of Technology-Iraq, Baghdad, Iraq
| | - Qusay F Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Baghdad, Iraq
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7
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Abbas TK, Rashid KT, Alsalhy QF. NaY zeolite-polyethersulfone-modified membranes for the removal of cesium-137 from liquid radioactive waste. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Ali AM, Rashid KT, Yahya AA, Majdi HS, Salih IK, Yusoh K, Alsalhy QF, AbdulRazak AA, Figoli A. Fabrication of Gum Arabic-Graphene (GGA) Modified Polyphenylsulfone (PPSU) Mixed Matrix Membranes: A Systematic Evaluation Study for Ultrafiltration (UF) Applications. MEMBRANES 2021; 11:membranes11070542. [PMID: 34357192 PMCID: PMC8305004 DOI: 10.3390/membranes11070542] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/05/2021] [Accepted: 07/12/2021] [Indexed: 12/07/2022]
Abstract
In the current work, a Gum, Arabic-modified Graphene (GGA), has been synthesized via a facile green method and employed for the first time as an additive for enhancement of the PPSU ultrafiltration membrane properties. A series of PPSU membranes containing very low (0–0.25) wt.% GGA were prepared, and their chemical structure and morphology were comprehensively investigated through atomic force microscopy (AFM), Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM). Besides, thermogravimetric analysis (TGA) was harnessed to measure thermal characteristics, while surface hydrophilicity was determined by the contact angle. The PPSU-GGA membrane performance was assessed through volumetric flux, solute flux, and retention of sodium alginate solution as an organic polysaccharide model. Results demonstrated that GGA structure had been successfully synthesized as confirmed XRD patterns. Besides, all membranes prepared using low GGA content could impart enhanced hydrophilic nature and permeation characteristics compared to pristine PPSU membranes. Moreover, greater thermal stability, surface roughness, and a noticeable decline in the mean pore size of the membrane were obtained.
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Affiliation(s)
- Alaa Mashjel Ali
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (K.T.R.); (A.A.Y.); (A.A.A.)
| | - Khalid T. Rashid
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (K.T.R.); (A.A.Y.); (A.A.A.)
| | - Ali Amer Yahya
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (K.T.R.); (A.A.Y.); (A.A.A.)
| | - Hasan Sh. Majdi
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq; (H.S.M.); (I.K.S.)
| | - Issam K. Salih
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq; (H.S.M.); (I.K.S.)
| | - Kamal Yusoh
- Department of Chemical Engineering, College of Engineering, University Malaysia Pahang, Pahang 26300, Malaysia;
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (K.T.R.); (A.A.Y.); (A.A.A.)
- Correspondence: or ; Tel.: +964-790-173-0181
| | - Adnan A. AbdulRazak
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (K.T.R.); (A.A.Y.); (A.A.A.)
| | - Alberto Figoli
- Institute on Membrane Technology, National Research Council (ITM-CNR), 87030 Rende (CS), Italy;
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Almusawy AM, Al-Anbari RH, Alsalhy QF, Al-Najar AI. Carbon Nanotubes-Sponge Modified Electro Membrane Bioreactor (EMBR) and Their Prospects for Wastewater Treatment Applications. MEMBRANES 2020; 10:membranes10120433. [PMID: 33348767 PMCID: PMC7766409 DOI: 10.3390/membranes10120433] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 11/16/2022]
Abstract
A novel membrane bioreactor system utilizes Multi-Walled Carbon Nanotubes (MWCNTs) coated polyurethane sponge (PUs), an electrical field, and a nanocomposite membrane has been successfully designed to diminish membrane with fouling caused by activated sludge. The classical phase inversion was harnessed to prepare Zinc Oxide/Polyphenylsulfone (ZnO/PPSU) nanocomposite membranes using 1.5 g of ZnO nanoparticles (NPs). The prepared nanocomposite membrane surface was fully characterized by a series of experimental tools, e.g., Scanning electron microscope (SEM), Atomic force microscopy (AFM), contact angle (CA), pore size, and pore size distribution. The testing procedure was performed through an Activated Sludge-Membrane Bioreactor (ASMBR) as a reference and results were compared with those obtained with nanotubes coated sponge-MBR (NSMBR) and nanotubes coated sponge-MBR in the presence of an electrical field (ENSMBR) system. Observed fouling reduction of the membrane has improved significantly and, thus, the overall long-term was increased by 190% compared with the control ASMBR configuration. The experimental results showcased that sponge-carbon nanotubes (CNTs) were capable of adsorbing activated sludge and other contaminants to minimize the membrane fouling. At a dosage of 0.3 mg/mL CNT and 2 mg/mL of SDBS, the sponge-CNT was capable of eliminating nitrogen and phosphorus by 81% and >90%, respectively.
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Affiliation(s)
- Ali M. Almusawy
- Civil Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (R.H.A.-A.); (A.I.A.-N.)
| | - Riyad H. Al-Anbari
- Civil Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (R.H.A.-A.); (A.I.A.-N.)
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq
- Correspondence: or ; Tel.: +964-790-173-0181
| | - Arshed Imad Al-Najar
- Civil Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (A.M.A.); (R.H.A.-A.); (A.I.A.-N.)
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Removal of Dyes Using Graphene Oxide (GO) Mixed Matrix Membranes. MEMBRANES 2020; 10:membranes10120366. [PMID: 33255523 PMCID: PMC7760904 DOI: 10.3390/membranes10120366] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 12/07/2022]
Abstract
The application of membrane technology to remove pollutant dyes in industrial wastewater is a significant development today. The modification of membranes to improve their properties has been shown to improve the permeation flux and removal efficiency of the membrane. Therefore, in this work, graphene oxide nanoparticles (GO-NPs) were used to modify the polyethersulfone (PES) membrane and prepare mixed matrix membranes (MMMs). This research is dedicated to using two types of very toxic dyes (Acid Black and Rose Bengal) to study the effect of GO on PES performance. The performance and antifouling properties of the new modified membrane were studied using the following: FTIR, SEM, AFM, water permeation flux, dye removal and fouling, and by investigating the influence of GO-NPs on the structure. After adding 0.5 wt% of GO, the contact angle was the lowest (39.21°) and the permeable flux of the membrane was the highest. The performance of the ultrafiltration (UF) membrane displayed a rejection rate higher than 99% for both dyes. The membranes showed the highest antifouling property at a GO concentration of 0.5 wt%. The long-term operation of the membrane fabricated from 0.5 wt% GO using two dyes improved greatly over 26 d from 14 d for the control membrane, therefore higher flux can be preserved.
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11
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Novel chemical modification of polyvinyl chloride membrane by free radical graft copolymerization for direct contact membrane distillation (DCMD) application. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118266] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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A Systematic Framework for Optimizing a Sweeping Gas Membrane Distillation (SGMD). MEMBRANES 2020; 10:membranes10100254. [PMID: 32987742 PMCID: PMC7598666 DOI: 10.3390/membranes10100254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/08/2020] [Accepted: 09/24/2020] [Indexed: 11/16/2022]
Abstract
The present work has undertaken a meticulous glance on optimizing the performance of an SGMD configuration utilized a porous poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) membrane. This was carried out by conducting a systematic framework for investigating and optimizing the pertinent parameters such as sweeping gas flow rate, feed temperature, feed concentration and feed flow rate on the permeate flux. For this purpose, the Taguchi method and design of experiment techniques were harnessed to statistically determine optimum operational conditions. Besides that, a comprehensive surface and permeation characterization was conducted against the hand-made membranes. Results showcased that the membrane performance was ultimately controlled by the feed temperature and was nearly (~680) % higher when the temperature raised from 45 to 65 °C. Also, to a lesser extent, the system was dominated by the feed flow rate. As the adopted feed flow rate increases (from 0.2 to 0.6 L/min), around 47.5% increment was bestowed on water permeability characteristics. In contra, 34.5% flux decline was witnessed when higher saline feed concentration (100 g/L) was utilized. In the meantime, with raising the sweeping gas flow rate (from 120 to 300 L/h), the distillate was nearly 129% higher. Based on Taguchi design, the maximum permeate flux (17.3 and 17 kg/m2·h) was secured at 35 g/L, 0.4 L/min, 65 °C and 300 L/h, for both commercial and prepared membranes, respectively.
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13
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Al-Ani FH, Alsalhy QF, Raheem RS, Rashid KT, Figoli A. Experimental Investigation of the Effect of Implanting TiO 2-NPs on PVC for Long-Term UF Membrane Performance to Treat Refinery Wastewater. MEMBRANES 2020; 10:E77. [PMID: 32326206 PMCID: PMC7231373 DOI: 10.3390/membranes10040077] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/02/2022]
Abstract
This study investigated the impact of implanting TiO2-NPs within a membrane to minimize the influence of long-term operation on the membrane characteristics. Four poly vinyle chloride-titanium oxide (PVC-TiO2-NPs) membranes were prepared to create an ultrafiltration membrane (UF) that would effectively treat actual refinery wastewater. The hypothesis of this work was that TiO2-NPs would function as a hydrophilic modification of the PVC membrane and excellent self-cleaning material, which in turn would greatly extend the membrane's lifetime. The membranes were characterized via Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy dispersive X-ray (EDX), atomic force microscope (AFM), and scanning electron microscope (SEM). The removal efficiency of turbidity, total suspended solid (TSS), oil and grease, heavy metals and chemical oxygen demand (COD) were investigated. Contact angle (CA) reduced by 12.7% and 27.5% on the top and bottom surfaces, respectively. The PVC membrane with TiO2-NPs had larger mean pore size on its surface and more holes with larger size inside the membrane structure. The addition of TiO2-NPs could remarkably enhance the antifouling property of the PVC membrane. The pure water permeability (PWP) of the membrane was enhanced by 95.3% with an increase of TiO2 to 1.5 gm/100gm. The PWP after backwashing was reduced from 22.3% for PVC to 10.1% with 1.5 gm TiO2-NPs. The long-term performance was improved from five days for PVC to 23 d with an increase in TiO2-NPs to 1.5 gm. The improvements of PVC-TiO2-NPs long-term were related to the enhancement of the hydrophilic character of the membrane and increase tensile strength due to the reinforcement effect of TiO2-NPs. These results clearly identify the impact of the TiO2-NPs content on the long-term PVC/TiO2-NPs performance and confirm our hypothesis that it is possible to use TiO2-NPs to effectively enhance the lifetime of membranes during their long-term operation.
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Affiliation(s)
- Faris H. Al-Ani
- Civil Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (F.H.A.-A.); (R.S.R.)
| | - Qusay F. Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq;
| | - Rawia Subhi Raheem
- Civil Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq; (F.H.A.-A.); (R.S.R.)
| | - Khalid T. Rashid
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq;
| | - Alberto Figoli
- Institute on Membrane Technology, National Research Council (ITM-CNR), 87030 Rende (CS), Italy;
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