scholarly journals Synthesis of polyethersulfone (PES)/GO-SiO2 mixed matrix membranes for oily wastewater treatment

2019 ◽  
Vol 81 (7) ◽  
pp. 1354-1364 ◽  
Author(s):  
Maryam B. Alkindy ◽  
Vincenzo Naddeo ◽  
Fawzi Banat ◽  
Shadi W. Hasan
Keyword(s):  
Wastewater Treatment ◽  
Water Flux ◽  
Oil Refinery ◽  
Membrane Properties ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Oily Wastewater ◽  
Mixed Matrix ◽  
Phase Inversion Technique ◽  
Oily Wastewater Treatment

Abstract The treatment of oily wastewater continues to pose a challenge in industries worldwide. Membranes have been investigated recently for their use in oily wastewater treatment due to their efficiency and relatively facile operational process. Graphene oxide (GO) and silica (SiO2) nanoparticles have been found to improve membrane properties. In this study, a polyethersulfone (PES) based GO-SiO2 mixed matrix membrane (MMM) was fabricated, using the phase inversion technique, for the treatment of oil refinery wastewater. The PES/GO-SiO2 membrane exhibited the highest water flux (2,561 LMH) and a 38% increase in oil removal efficiency by comparison to a PES membrane. Compared to PES/GO and PES/SiO2 membranes, the PES/GO-SiO2 MMM also displayed the best overall properties in terms of tensile strength, water permeability, and hydrophilicity.

Hydrophilicity Effect of Rice Husk Silica on Mixed Matrix PSF Membrane Properties

2014 ◽  
Vol 70 (2) ◽  
Author(s):  
Zawati Harun ◽  
Muhamad Fikri Shohur ◽  
Mohd Riduan Jamalludin ◽  
Muhamad Zaini Yunos ◽  
Hatijah Basri
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Rice Husk ◽  
Pure Water ◽  
Water Flux ◽  
Membrane Properties ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Rice Husk Silica ◽  
Phase Inversion Technique

The effects of two types of additives rice husk silica (RHS) towards membrane hydrophilicity and flux performance were investigated. Different percentages or concentrations of rice husk silica (RHS) additive were used to form a mixed matrix membrane. This flat sheet mixed matrix membrane was prepared via phase inversion technique. The fabricated membrane was characterized by contact angle and surface roughness measurements, whereas the flux permeation was measured using pure water flux. The result demonstrated that the addition both types of rice husk silica have increased the hydrophilicity properties of the mixed matrix membrane. Stronger effect of hydrophilicity is shown upon addition of amorphous rice husk particle where both contact angle and surface roughness were reduced and increased, respectively.   

Novel polyethersulfone (PES)/hydrous manganese dioxide (HMO) mixed matrix membranes with improved anti-fouling properties for oily wastewater treatment process

RSC Advances ◽  
2014 ◽  
Vol 4 (34) ◽  
pp. 17587-17596 ◽  
Author(s):  
R. Jamshidi Gohari ◽  
E. Halakoo ◽  
W. J. Lau ◽  
M. A. Kassim ◽  
T. Matsuura ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Manganese Dioxide ◽  
Treatment Process ◽  
Synthetic Wastewater ◽  
Mixed Matrix Membranes ◽  
Oily Wastewater ◽  
Mixed Matrix ◽  
Wastewater Treatment Process ◽  
Oily Wastewater Treatment ◽  
Matrix Membranes

The improvement in flux recovery from ∼42% in pristine PES membranes to >75% in PES/HMO-2 mixed matrix membranes indicated the greater anti-fouling properties of the PES/HMO-2 membrane in treating synthetic wastewater.

scholarly journals INCORPORATION OF IMPRINTED-ZEOLITE TO POLYETHERSULFONE/CELLULOSE ACETATE MEMBRANE FOR CREATININE REMOVAL IN HEMODIALYSIS TREATMENT

2019 ◽  
Vol 81 (3) ◽  
Author(s):  
Yanuardi Raharjo ◽  
Mochamad Zakki Fahmi ◽  
Siti Wafiroh ◽  
Alfa Akustia Widati ◽  
Eviomitta Rizki Amanda ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Pure Water ◽  
Water Flux ◽  
Hollow Fibre ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Cellulose Acetate Membrane ◽  
Zeolite A ◽  
Mixed Matrix ◽  
Water Contact

Polyethersulfon (PES) membrane has been widely used in the biomedical field especially in hemodialysis application. Many modifications of membranes have been applied into hemodialysis such as diffusion, adsorption, and mixed-matrix membrane. The main problem of those membranes is less selectivity to attract the uremic toxins. In this study, we report the modification of PES mixed with cellulose acetate (PES/CA) membrane as mixed-matrix membrane (MMM) using imprinted-zeolite (PES/CA/IZC) in order to increase the selectivity for targeted analyte. The hollow fibre membranes (HFM) were fabricated by dry-wet spinning technique. The successful zeolite A synthesised and was characterised by x-ray diffraction (XRD). The mixed-matrix membranes were characterised in terms of morphology using scanning electron microscopy (SEM), water contact angle (WCA), pure water flux (PWF), clearance of creatinine (CC), and BSA adsorption. In accordance with the results of characterisation, the synthesis of zeolite A, and imprinted-zeolite creatinine was successfully fabricated. The SEM results showed that the PES/CA/IZC membrane has uniform pores and fingerlike structure. The same result was obtained for PES/CA membrane, but not for PES/CA/ZA membrane. The WCA of the PES/CA; PES/CA/ZA; and PES/CA/IZC were 85.63; 84.98; and 77.53 (o), respectively. While the PWF were 22.84; 27.57, and 40.52 (Lm-2h-1), respectively. The addition of imprinted-zeolite into the membrane improved creatinine removal up to 74.99%. It showed that PES/CA/IZC has succeeded in increasing the selectivity of membranes to attract the creatinine as target analyte. Compared to the PES/CA, the creatinine clearance of membranes improved and increased up to 5.2%. For protein rejection, the PES/CA/IZC rejected 79.05% of bovine serum albumin (BSA). Based on these results, it can be concluded that PES/CA/IZC can be considered as hemodialysis membranes.

scholarly journals Visible Light-Driven GO/TiO2-CA Nano-Photocatalytic Membranes: Assessment of Photocatalytic Response, Antifouling Character and Self-Cleaning Ability

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2021
Author(s):  
Rooha Khurram ◽  
Aroosa Javed ◽  
Ruihua Ke ◽  
Cheng Lena ◽  
Zhan Wang
Keyword(s):  
Wastewater Treatment ◽  
Visible Light ◽  
Separation Efficiency ◽  
Water Flux ◽  
Membrane Properties ◽  
Photo Degradation ◽  
Nano Composite ◽  
Phase Inversion Technique ◽  
Visible Light Driven ◽  
Self Cleaning

Photocatalysis and membrane technology in a single unit is an ideal strategy for the development of wastewater treatment systems. In this work, novel GO (x wt%)/TiO2-CA hybrid membranes have been synthesized via a facile non-solvent induced phase inversion technique. The strategy aimed to address the following dilemmas: (1) Effective utilization of visible light and minimize e−/h+ recombination; (2) Enhanced separation capability and superior anti-fouling and self-cleaning ability. The experimental results reveal that the integration of nano-composite (GO/TiO2) boosts the membrane properties when compared to pristine CA and single photocatalyst employed membrane (GO-CA and TiO2-CA). The effect of GO content on the properties of the photocatalytic membrane has been determined by utilizing three different ratios of GO, viz. 0.5 wt%, 1 wt%, and 2 wt% designated as NC(1)-CA, NC(2)-CA, and NC(3)-CA, respectively. Amongst them, NC(3)-CA membrane showed state-of-the-art performance with an elevated photocatalytic response (four times higher than pristine CA membrane) toward methyl orange. Moreover, the water flux of NC(3)-CA membrane is 613 L/m2h, approximately three times higher than bare CA membrane (297 L/m2h), while keeping the MO rejection high (96.6%). Besides, fouling experiments presented the lowest total and fouling resistance ratios and a higher flux recovery ratio (91.78%) for the NC(3)-CA membrane, which endows the membrane with higher anti-fouling and self-cleaning properties. Thus, NC(3)-CA membrane outperforms the other as synthesized membranes in terms of separation efficiency, visible light photo-degradation of pollutant, anti-fouling and self-cleaning ability. Therefore, NC(3)-CA membrane is considered as the next generation membrane for exhibiting great potential for the wastewater treatment applications.

scholarly journals Preparation and characterization of polysulfone/zeolite mixed matrix membranes for removal of low-concentration ammonia from aquaculture wastewater

2017 ◽  
Vol 77 (2) ◽  
pp. 346-354 ◽  
Author(s):  
Pourya Moradihamedani ◽  
Abdul Halim Abdullah
Keyword(s):  
Pure Water ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Low Concentration ◽  
Pore Blockage ◽  
Pure Water Flux ◽  
Aquaculture Wastewater ◽  
Matrix Membranes

Abstract Removal of low-concentration ammonia (1–10 ppm) from aquaculture wastewater was investigated via polysulfone (PSf)/zeolite mixed matrix membrane. PSf/zeolite mixed matrix membranes with different weight ratios (90/10, 80/20, 70/30 and 60/40 wt.%) were prepared and characterized. Results indicate that PSf/zeolite (80/20) was the most efficient membrane for removal of low-concentration ammonia. The ammonia elimination by PSf/zeolite (80/20) from aqueous solution for 10, 7, 5, 3 and 1 ppm of ammonia was 100%, 99%, 98.8%, 96% and 95% respectively. The recorded results revealed that pure water flux declined in higher loading of zeolite in the membrane matrix due to surface pore blockage caused by zeolite particles. On the other hand, ammonia elimination from water was decreased in higher contents of zeolite because of formation of cavities and macrovoids in the membrane substructure.

scholarly journals Understanding the morphology of MWCNT/PES mixed-matrix membranes using SANS: interpretation and rejection performance

2019 ◽  
Vol 9 (7) ◽  
Author(s):  
Km Nikita ◽  
P. Karkare ◽  
D. Ray ◽  
V. K. Aswal ◽  
Puyam S. Singh ◽  
...  
Keyword(s):  
Water Flux ◽  
High Water ◽  
Mixed Matrix Membranes ◽  
High Porosity ◽  
Mixed Matrix ◽  
Multiwalled Carbon ◽  
Working Pressure ◽  
Water Transportation ◽  
Phase Inversion Technique ◽  
Matrix Membranes

Abstract We describe the relationship between the morphology and rejection performance by the mixed-matrix membranes as a unique class of high water flux nanofiltration membranes comprising polyethersulfone/functionalized multiwalled carbon nanotubes (PES/f-MWCNTs). These membranes contain aligned MWCNTs uniformly distributed inside a PES matrix prepared using conventional phase-inversion technique. The small-angle neutron scattering analysis confirmed the high porosity and uniformity among of the pores of CNTs in the membranes. The frictionless water transport from vertically oriented f-MWCNTs were verified to facilitate remarkable enhancement in the water flux through the membranes. The water transportation speed, as well as rejection, of selected heavy metals increases nearly about 3 times and 2–3.5 times, respectively, than the pristine PES membrane, depending upon CNTs loading. Low working pressure and good retention properties make these membranes to be an ideal for the application of highly efficient filtration units.

scholarly journals Biochar/Kevlar Nanofiber Mixed Matrix Nanofiltration Membranes with Enhanced Dye/Salt Separation Performance

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 443
Author(s):  
Shiguo Gu ◽  
Lei Li ◽  
Fei Liu ◽  
Jian Li
Keyword(s):  
Structural Characteristics ◽  
Pure Water ◽  
Water Flux ◽  
Physical Stability ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Inversion Method ◽  
Separation Performance ◽  
Mixed Matrix ◽  
High Separation

Mixed matrix membranes have received ever-growing attention due to their high separation performance, taking the advantages of both porous fillers and polymer backbones. However, limitations still exist due to the instability of polymers in harsh environments. Here, Kevlar aramid nanofibers, a nanoscale version of poly(paraphenylene terephthalamide), were applied to fabricate a nanofiltration membrane by a thermo-assisted phase inversion method due to their high mechanical strength, physical stability and resistance to solvents. Biochar was incorporated in the Kevlar nanofibers to evaluate its performance in dye/salt separation performance. The fillers’ distribution in the polymeric matrix, structural characteristics, and the interaction of fillers with the polymer in the membrane were characterized via SEM, FTIR, AFM and contact angle analysis. Under the optimal fabrication conditions, the obtained membrane exhibited a pure water flux of 3.83 L m−2 h−1 bar−1 with a dye rejection of 90.55%, 93.54% and 95.41% for Congo red, methyl blue and Reactive blue 19, respectively. Meanwhile, the mixed matrix membrane maintained a salt rejection of 59.92% and 85.37% for NaCl and Na2SO4, respectively. The obtained membrane with high separation performance suggested that Kevlar nanofiber and biochar are good candidates for membrane synthesis.

scholarly journals Elimination of an Endocrine Disruptive Chemical by PSf/TiO2 hybrid Membranes via Membrane Rejection and Photocatalytic Oxidation

2017 ◽  
Vol 19 (1) ◽  
Author(s):  
V. S. Babu ◽  
M. S. Jyothi ◽  
Laveena P. D’Souza ◽  
R. Shwetharani ◽  
Mahesh Padaki ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Photocatalytic Oxidation ◽  
Pure Water ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Organic Degradation ◽  
Physical Separation ◽  
Angle Measurements

This study reports removal of oxybenzone from TiO2 nanoparticles and those incorporated mixed matrix membrane. Polysulfone and TiO2 nanoparticles mixed matrix membrane were prepared by Diffusion Induced Phase Separation (DIPS) method. The TiO2 nanoparticles and membranes were characterized by XRD, SEM, TEM, Raman spectroscopy and FESEM techniques; analysis depicts 100% anatase with spherical crystallite size averaging around 17 nm. The mixed matrix membranes were used for bifunctional application, physical separation and organic degradation. The membranes were subjected to pure water flux and contact angle measurements, the influence of TiO2 were to increase the hydrophilicity of the membrane, the performance of the membrane in physical separation showed prominent results by removing oxybenzone up to 95% where as in organic degradation membrane showed 80% of degradation. The efficiency of the membrane in degradation was more prominent as compared to bare TiO2 nanoparticles. The TiO2 nanoparticles show around 70% of degradation, whereas, the bifunctionality of the membranes showed more prominence in removal of complete oxybenzone.

scholarly journals Polyethersulfone/HFO Mixed Matrix Membrane for Enhanced Oily Wastewater Rejection

2017 ◽  
Vol 20 (1) ◽  
Author(s):  
S. N. W. Ikhsan ◽  
N. Abdullah ◽  
N. Yusof ◽  
F. Aziz ◽  
N. Misdan ◽  
...  
Keyword(s):  
Contact Angle ◽  
Oil And Gas Industry ◽  
Significant Rise ◽  
Precipitation Method ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Oily Wastewater ◽  
Permeate Flux ◽  
Mixed Matrix ◽  
Water Permeation

The recent growth of oil and gas industry has led to the increase of oily wastewater release. Membrane technology has been in the spotlight in recent advancement to treat the oily wastewater. Fouling due to surfactant adsorption and/or oil droplets plugging the pore has become one of the major hindrances in most of the research on oily wastewater treatment. In this work, self-synthesized hydrous ferric dioxide nanoparticles (HFO NPs) via chemical precipitation method were incorporated in polyethersulfone (PES) to fabricate a novel nanocomposite mixed matrix membranes (MMMs) for ultrafiltration (UF). The morphologies and physicochemical properties of prepared HFO NPs and MMMs were characterized using Scanning Electron Microscopy (SEM) and Transmission electron microscope (TEM), contact angle goniometer, before further subjected to water permeation test and oil rejection test. It was found that contact angle of membrane decreased remarkably with an increase in HFO nanoparticle loading from 70° to 38° at which proved its improved hydrophilicity which led to a significant rise in permeate flux, achieving 168.06 L/m2h bar in comparison to 63.67 L/m2h bar shown by the plain PES membrane. Total rejection of oil (100% rejection) demonstrated by the MMMs has confirmed the superior potential of PES/HFO UF membrane for total purification of oily wastewater especially to be reused in oilfield and refinery processes as well as to be released to the environment.

Recent Development of Enhanced Polymeric Blend Membranes in Gas Separation: A Review

2020 ◽  
Vol 42 (2) ◽  
pp. 282-282
Author(s):  
Asim Mushtaq Asim Mushtaq ◽  
Hilmi Mukhtar and Azmi Mohd Shariff Hilmi Mukhtar and Azmi Mohd Shariff
Keyword(s):  
Natural Gas ◽  
Gas Separation ◽  
Calorific Value ◽  
Membrane Properties ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Inorganic Membranes ◽  
Mixed Matrix ◽  
Blend Membranes ◽  
Polymeric Blend

Natural gas is the most rapid growing energy sources around the world. The presence of CO2 in natural gas lowers its calorific value and purification of a natural gas by removing CO2 is an essential process to increase its value. Several separation technologies are used to remove acidic gases like H2S and CO2 from natural gas. Among these technologies, membrane process is a feasible energy saving alternate to CO2 capture. The three types of membrane include polymeric, inorganic and mixed matrix membranes. Currently, polymer membranes and inorganic membranes were considered for gas separation, but inorganic membranes are too costly. Even mixed matrix membrane performance suffered defects caused by poor glassy polymer and particle interactions. Pure glassy and pure rubbery are problematic due to their instructive properties. The blending of glassy with rubbery polymers improve membrane properties for gas separation. To enhance the compatibility of the polymer blend, a third component is added such as alkanol amines. Although, the enhanced polymeric blend membranes have many advantages in terms of permeance, selectivity, thermal and chemical stability. Polymer blending also offers an effective technique to synthesize membranes with desirable properties.

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