FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Graphical Abstracts
344
348
EN
https://www.msrjournal.com/article_45682.html
https://www.msrjournal.com/article_45682_aa412c13c73a184f83d236c0c5618caa.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Professor Ahmad Fauzi Ismail: A remarkable individual, educator, mentor, and a dear friend
349
350
EN
Takeshi
Matsuura
Industrial Membrane Research Laboratory, Department of Chemical and Biological Engineering, University of Ottawa, On. K1N 6N5, Canada
matsuura@uottawa.ca
Pei Sean
Goh
Universiti Teknologi Malaysia
peisean@petroleum.utm.my
https://www.msrjournal.com/article_45683.html
https://www.msrjournal.com/article_45683_a90ee565e1a41a39c19886e94316adbc.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Effect of Surface Modification with Electrospun Nanofibers on the Performance of an Ultrafiltration Membrane
351
358
EN
Ladan
Zoka
Department of Civil Engineering, University of Ottawa
ladanzoka@yahoo.co.uk
Roberto
Narbaitz
Department of Civil Engineering, University of Ottawa
narbaitz@uottawa.ca
Takeshi
Matsuura
University of Ottawa, Canada
matsuura@eng.uottawa.ca
10.22079/jmsr.2020.119481.1319
Electrospinning of nanofibrous mats to create new membranes has been widely investigated, however surface modification of commercial membranes by electrospinning of nanofiber layer has received limited attention. In this work, the surface of a commercial polyethersulfone (PES) ultrafiltration membrane was coated with electrospun polyvinylidene fluoride (PVDF) hydrophobic nanofibers (NFs) for different time periods, i.e., 25 min, 125 min, and 250 min., and the effect of coating on the filtration performance was investigated. The membranes were characterized by scanning electron microscopy (SEM), contact angle measurement and further subjected to pure water permeation experiments, as well as the filtration of Ottawa River Water (ORW) and various protein solutes. By a thorough statistical analysis, it was concluded that the coating with the electrospun nanofiber layer enhanced the pure water permeation (PWP) flux. However, the fouling of the composite nanofiber/PES membranes was more severe due to the compaction of the soft nanofiber layer and the entrapment of foulants in the spaces between nanofibers. The nanofiber mat did not impact the separation of protein solutes as the composite and base PES membranes had the same protein removals.
Ultrafiltration membrane,surface coating by nanofiber electrospinning,PVDF nanofibers,pure water permeation flux,river water fouling,protein fouling
https://www.msrjournal.com/article_39146.html
https://www.msrjournal.com/article_39146_bbadc121f54b16379bc1ed8f6961a132.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Physical Studies of Forward Osmosis Membranes Prepared by Cross-linking Polyvinyl Alcohol on Electrospun Nanofibers
359
366
EN
Nurafidah
Arsat
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
nurafidaharsat@gmail.com
Juhana
Jaafar
0000-0002-7245-8155
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
juhana@petroleum.utm.my
Woei Jye
Lau
0000-0001-8939-8518
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
lwoeijye@utm.my
Mohd Hafiz Dzarfan
Othman
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
dzarfan@utm.my
Mukhlis
A Rahman
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
r-mukhlis@utm.my
Farhana
Aziz
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
farhanaaziz@utm.my
Norhaniza
Yusof
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
norhaniza@utm.my
Wan Norharyati
Wan Salleh
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
w-norharyati@utm.my
Ahmad Fauzi
Ismail
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
afauzi@utm.my
10.22079/jmsr.2020.117738.1310
The conventional nanofiber-supported forward osmosis (FO) membrane possessed some issues, for example, easy deformation and weak interfacial strength between the substrate and selective layer. A dual-layered composite membrane consists of electrospun nanofibrous membranes (ENMs) as the support layer and cross-linked polyvinyl alcohol (PVA) top coating as the active layer is fabricated. Hence, the objective of this work is to study the physical properties of the prepared PVA/ polyvinylidene fluoride (PVDF) composite membranes. The novelty of this work relies on the new exploitation of the prepared dual-layered thin film nanofibrous composite (TFNC) membranes via the cross-linked technique in the FO process. The experiment works include the fabrication of nanofibrous substrates and selective layer via electrospinning, followed by the PVA cross-linking process prior to the characterisation studies and FO evaluation. FO performance test revealed a comparable water flux with the conventional dual-layered composite membrane, besides exhibited a significantly low Js /Jw ratio. This study indicated that dual-layered cross-linked PVA on electrospun PVDF nanofibers is a promising approach to overcome the drawback of the existing issues in the conventional method of preparing surface coated composite membranes which is a viable option to manufacture high-performance TFNC-FO membranes.
Electrospinning,Electrospun nanofibrous membranes,Composite membranes,Forward osmosis,Polyvinyl alcohol
https://www.msrjournal.com/article_39202.html
https://www.msrjournal.com/article_39202_93fac7dea6b32365dafa0e3272f81414.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Plasticization Modeling in Cellulose Acetate/NaY Mixed Matrix Membranes
367
374
EN
Einallah
Khademian
Petrochemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Mahshahr Campus, P.O. Box 415, Mahshahr, Iran
ainallah.khademian@gmail.com
Mostafa
Keshavarz Moraveji
Chemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
moraveji@aut.ac.ir
Mitra
Dadvar
Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, P.O. Box 15875-4413, Iran
dadvar@aut.ac.ir
Hamidreza
Sanaeepur
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran.
h.sanaee@yahoo.com
10.22079/jmsr.2020.128618.1394
The plasticization of mixed matrix membranes (MMMs) in the presence of solid particles differs from pure glassy polymeric membranes. This study aims to develop a mathematical model for gas permeability in the glassy polymer/nano-porous filler MMMs, considering the plasticization phenomenon in the presence of the solid particles. The diffusivity of each component is assumed to be a function of the plasticization in the presence of nano-porous fillers. The partial immobilization model with the insertion of filler contributions in gas solubility of MMMs is also applied to determine the fraction of sorbed mobile gases. In this case, the model parameters were determined by fitting the experimental data of cellulose acetate/sodium Y zeolite (CA/NaY) MMMs for CO2 /N2 separation. The results showed that the plasticization parameter (β) is reduced by increasing the zeolite content in the MMMs, both for CO2 and N2 gases. The MMM plasticization declined by a shift in the plasticization pressure towards larger values. Except for the MMM with 20 wt.% NaY content, CO2 - induced plasticization fugacities of all the MMMs were best modeled with a relative error of less than 8%. Moreover, an acceptable mean relative error of 7.57% was obtained for all the MMMs containing 0-20 wt. % NaY. Statistical analysis with calculating the Pearson correlation’s parameters showed a direct and strong relationship between the two coefficients C′HA and b. Furthermore, it revealed a close relationship between all other coefficients, while no relationships were observed between D0 and β, and also, F and D0 for both the CO2 and N2 gases, maybe because of the small sizes of these coefficients. The zeolite particles play a role of anti-plasticizer. Additionally, by increasing the zeolite loading, the gas diffusivity variations in the membranes decreased. This reduction is another sign of the plasticization reduction in the MMMs as compared to the pure glassy membranes.
Mixed Matrix Membrane,Plasticization,Modeling,Zeolite,CO2 separation
https://www.msrjournal.com/article_44456.html
https://www.msrjournal.com/article_44456_785526970908a5e031551f03711d421e.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Enhancement of Antifouling of Ultrafiltration Polyethersulfone Membrane with Hybrid Mg(OH)2/Chitosan by Polymer Blending
375
382
EN
Umi
Fathanah
Doctoral School of Engineering, Universitas Syiah Kuala, Darussalam, Banda Aceh 23111, Indonesia
umifathanah@unsyiah.ac.id
Izarul
Machdar
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
machdar@unsyiah.ac.id
Medyan
Riza
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
medyan_riza@unsyiah.ac.id
Nasrul
Arahman
Department of Chemical Engineering, Syiah Kuala University, Banda Aceh, Indonesia
nasrular@unsyiah.ac.id
Mukramah
Yusuf
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
mukramah@mhs.unsyiah.ac.id
Syawaliah
Muchtar
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
syawaliah2009@gmail.com
Muhammad
Roil
Bilad
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
mroil.bilad@utp.edu.my
Nik Abdul Hadi
Md Nordin
Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak
nahadi.sapiaa@utp.edu.my
10.22079/jmsr.2020.124107.1365
One of the most straight-forward approaches to improve the membrane performance is by imposing the hydrophilic property. This paper discusses the fabrication of polyethersulfone (PES)-based membranes using chitosan and Mg(OH)2 as organic and inorganic additives with the specific aim of increasing membrane hydrophilicity, respectively. Three variants of dope solutions were prepared with the addition of 1 wt% chitosan, 1 wt% Mg(OH)2 and a combination of chitosan/Mg(OH)2 into three different PES polymer solutions. The effects of additives on the resulting membranes were evaluated in terms of chemical functional groups by ATR-FTIR, morphological changes by SEM, and hydrophilicity degree of membrane surface based on the water contact angle (WCA), as well as the filtration profile, and antifouling properties. SEM images shows that the presence of additives altered the morphological structure of the membrane. It also enhanced the hydrophilicity significantly as shown by decreasing WCA from 84.2° to 68°. The modification also brings notable effects on the membrane performance as proven by the enhanced permeability of both pure water and humic acid (HA) solution as well as acceptable rejection of the HA solute. Overall, the Mg(OH)2 -modified PES membrane produces much greater permeability and antifouling property compared to the rest thanks to its good hydrophilicity.
Polyethersulfone (PES),Mg(OH)2,Chitosan,Hydrophilicity,Antifouling
https://www.msrjournal.com/article_40300.html
https://www.msrjournal.com/article_40300_55a3e02696fed322be8620d583cff227.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Effect of Hydrophilic-Hydrophilic Interactions between the Foulant and Membrane Surface on the Fouling Propensity of Different Foulants
383
389
EN
Saeid
Rajabzadeh
0000-0003-2883-4587
Kobe Univeristy
rajabzadehk@people.kobe-u.ac.jp
Hiroki
Awaji
Kobe University
192t401t@stu.kobe-u.ac.jp
Yuchen
Sun
Kobe Univerisity
no_cl_2@hotmail.com
Daisuke
Saeki
0000-0002-2370-5041
Shinshu University
dsaeki@shinshu-u.ac.jp
Noriaki
Kato
Kobe University
noriaki_kato@people.kobe-u.ac.jp
Hideto
Matsuyama
Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501,Japan
matuyama@kobe-u.ac.jp
10.22079/jmsr.2020.128995.1396
Polyethersulfone (PES) membrane was grafted with sulfobetaine methacrylate (SBMA) zwitterion to obtain a membrane surface with improved hydrophilicity. Successful grafting was confirmed by FTIR-ATR, and grafting density was controlled by adjusting the 3-aminopropyltrimethoxysilane (APTMS)/trimethoxy(propyl)silane (TMPS) ratio. The interactions between different foulants with the membrane surface were evaluated. Three different foulants, namely, humic acid (HA), bovine serum albumin (BSA), and sodium alginate (SA) were used to evaluate the anti-fouling properties of the grafted PES membrane. It was expected that increasing the surface hydrophilicity would decrease membrane fouling. However, a completely different trend of fouling propensity was observed for the three different foulants. For the grafted membrane with higher hydrophilicity, a considerable antifouling phenomenon property was observed when it was exposed to BSA. In contrast, when SA was used as the foulant, there was a slight increase in the anti-fouling propensity, and surprisingly, when HA was used, the modified hydrophilic membrane showed higher fouling than that of the pristine membrane. These results propose that the different trends of fouling are related to the interactions of the foulant molecules with the membrane material. Considering the hydrophilic nature of the HA and SA, and SBMA grafted on the membrane, it was concluded that the conventional approach of making a membrane surface hydrophilic by grafting to avoid its fouling by protein-type foulants may result in even worse results for some types of foulants such as SA and especially HA.
Membrane fouling Zwitterion grafting Hydrophilic interaction Foulants chemical structure Anti,fouling membranes
https://www.msrjournal.com/article_43636.html
https://www.msrjournal.com/article_43636_ccfbd7e4e58ed00ca7855da96ca66f30.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Demulsification Performance of Superhydrophobic PVDF Membrane: A Parametric Study
390
394
EN
Fawzi
Banat
0000-0002-7646-5918
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates. Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science
fawzi.banat@ku.ac.ae
Abdul
Hai
0000-0003-4391-4008
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
abdul.hai@ku.ac.ae
Munirasu
Selvaraj
0000-0001-7865-7633
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
munirasu@gmail.com
Bharath
Govindan
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates
bharath.govindan@ku.ac.ae
Rambabu
Krishnamoorthy
0000-0002-6008-5478
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates
rambabu.krishnamoorthy@ku.ac.ae
Shadi
Wajih
Hassan
0000-0002-7269-094X
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates. Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science
shadi.hasan@ku.ac.ae
10.22079/jmsr.2020.122768.1353
Oil-water separation using hierarchical-structured superhydrophobic and superoleophilic membranes have been recently received remarkable attention. In this study, a polyvinylidene difluoride (PVDF) based membrane was prepared by a non-solvent induced phase inversion method for oil-water emulsions separation. The influences of the two key parameters, namely the concentration of emulsifying agent and water content of the feed emulsion, on the membrane performance were investigated in terms of the permeate flux and water rejection. Span-80, distilled water and n-eptane were employed as an emulsifying agent, dispersed phase and continuous phase, respectively. Results showed that an increase in the emulsifier concentration led to a decrease in the oil permeate flux and water rejection. The emulsifier concentration had the most significant effect on the oil-water separation compared with the water content in the feed emulsion. In a continuous experiment lasted for 120 h, more than 95% water rejection was maintained but with a significant drop in oil flux. The well-structured superhydrophobic PVDF membrane showed promise for water-in-oil emulsion separations.
water in oil emulsion,Polyvinylidene difluoride (PVDF),superhydrophobic membranes,permeate flux,surfactant concentration,operational stability
https://www.msrjournal.com/article_40603.html
https://www.msrjournal.com/article_40603_20453720248342e0a496256df9b5fdf0.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Performance and Characterizations of [EMIM][Tf2N] and Silica Direct Blending in Mixed Matrix Membrane for CO2 /CH4 Separation
395
400
EN
Nik Abdul Hadi
Md Nordin
Department of Chemical Engineering, Universiti Teknologi PETRONAS
nahadi.nordin@gmail.com
Siti Nur Alwani
Shafie
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
alwanishafie93@gmail.com
Muhammad Amirul Mukmin
Marzuki
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
amirul.mukmeen@gmail.com
Muhammad Roil
Bilad
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
mroil.bilad@utp.edu.my
Norazlianie
Sazali
Faculty of Mechanical Engineering, Universiti Malaysia Pahang
azlianie@ump.edu.my
Noor Maizura
Ismail
Faculty of Engineering, Universiti Malaysia Pahang
maizura@ums.edu.my
A.F.
Ismail
Advanced Membrane Technology Center (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
afauzi@utm.my
10.22079/jmsr.2020.120978.1341
Ionic liquids (ILs) have been studied for CO2 capture owing to the excellent properties of having high CO2 affinity and negligible vapor pressure. The incorporation of IL in polycarbonate (PC) based Mixed Matrix Membrane (MMM) is becoming one of the promising approaches for developing membrane for CO2 /CH4 separation. Silica nanoparticle has also been proven to improve performance of MMM for CO2 /CH4 separation. Thus, this study investigates the effect of direct blending of IL (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [EMIM][Tf2 N]) and silica into the MMM on its properties and CO2 /CH4 separation performances. The immobilization of silica particles and [EMIM][Tf2 N] was confirmed from the FTIR peaks data. The IL in the MMM significantly increases the MMM rigidity as ascribed by its enhanced glass transition temperature. The IL in the MMM improves the interaction by acting as a bridging agent between silica particles and PC. The MMM with 1 wt% of fillers and IL shows the highest performance by enhancing CO2 permeability by 13 folds and selectivity by 35% compared to that of pure PC membrane. The results suggest that low loading of silica/IL in MMM is noteworthy to be explored and further studies at high loading are warranted.
CO2 separation,Ionic liquids (ILs),[EMIM][Tf2N],Mixed Matrix Membrane,IL blend membrane
https://www.msrjournal.com/article_40483.html
https://www.msrjournal.com/article_40483_cc2bee5084c8edd8922e07549309995e.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Anti-Wetting Membrane Distillation to Treat High Salinity Wastewater: Review
401
415
EN
Jing Yi
Chin
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia
chin.jingyi96@gmail.com
Abdul Latif
Ahmad
0000-0003-1612-3032
School of Chemical Engineering,
Universiti Sains Malaysia.
chlatif@usm.my
Siew Chun
Low
0000-0002-1827-5665
School of Chemical Engineering
Universiti Sains Malaysia
Engineering Campus
14300 Nibong Tebal
Pulau Pinang
Malaysia
chsclow@usm.my
10.22079/jmsr.2020.129954.1400
Shortage of freshwater supply is now a pressing worldwide stress. While there is plenty of water on this blue planet, a major portion of it is inapt for human use due to its high salt content. A string of desalination technologies was thus presented to convert high salinity water sources into fresh ones. The conventional desalination technologies are capable to perform desalination effectively. Nonetheless, concern like their energy efficiency is put forward. Following that, this review aims to discuss the feasibility of employing membrane distillation (MD), an advanced application that outperforms conventional desalination technologies in terms of its energy efficiency to treat various kinds of high salinity wastewaters. Challenges associated with MD were investigated whereby emphasis was given to membrane pore wetting issue. The latter part of this review focused on resolving MD’s challenges via synthesis of superhydrophobic membranes by inducing surface roughness and lowering surface energy of neat membranes. Various fabrication materials and modification methods such as direct manufacturing and addition of extrinsic additives to produce anti-wetting membrane were scrutinized. The superhydrophobic modification techniques include incorporation of nanoparticles, solvent exchange and plasma treatment, have successfully brought up the static contact angle of modified membranes to 150-173º. Those techniques resulted in enhanced permeate flow, with rejection of undesired component close to 100%. In short, MD demonstrates superiorities with regards to its thermal efficiency and stable desalting performances. MD also sees potentials in treating saline effluent from aquaculture, an imperative industry developed aggressively recently to bridge global food supply and demand.
Membrane Distillation (MD),Desalination,Energy Efficiency,superhydrophobic modifications,Aquaculture
https://www.msrjournal.com/article_44458.html
https://www.msrjournal.com/article_44458_a052bfa8de18db35ff5da757400b8649.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Novel Nanocomposite HNT-TiO2/PVDF Adsorptive Nanofiber Membranes for Arsenic (III) Removal
416
423
EN
Ali
Moslehyani
Advanced Membrane Technology Research Center (AMTEC),
Petroleum Engineering,
University Technology Malaysia (UTM)
ali.moslehyani@yahoo.com
Ramin
Farnood
0000-0002-2680-0036
Chemical Engineering and Applied Chemistry Department, University of Toronto, On., M5S 3E5, Canada
ramin.farnood@utoronto.ca
Shahram
Tabe
Ministry of the Environment
and
University of Toronto
shahram.tabe@ontario.ca
Takeshi
Matsuura
Industrial Membrane Research Laboratory, Department of Chemical and Biological Engineering, University of Ottawa, On. K1N 6N5, Canada
matsuura@uottawa.ca
Ahmad Fauzi
Ismail
0000-0003-0150-625X
Advanced Membrane Technology Research Center (AMTEC), UTM, Malaysia
fauzi.ismail@gmail.com
10.22079/jmsr.2020.135081.1407
In this work, the removal of arsenic (III) from contaminated water by means of electrospun nanofiber adsorptive membranes (ENAMs) has been reported. Polyvinylidene fluoride (PVDF) was used for preparation of the ENAMs incorporating titanium dioxide (TiO2)-halloysite nanotubes (HNTs) nanoparticles as adsorbents. Removal of arsenic (III) by the prepared ENAMs was studied at adsorbent to polymer ratios of 0, 0.25, and 0.5 w/w. The addition of TiO2-HNTs to the polymer left visible changes on the structural morphology and fibers properties of the membrane. The membrane samples were characterized by pure water permeability, contact angle measurement, TEM, SEM, XPS, and XRD. Results indicated that by increasing the TiO2-HNT content, the adsorption capacity of the membrane improved. A maximum of 31.2 mg/g of arsenic adsorption was achieved using TiO2-HNT<br />to PVDF ratio of 0.5 w/w. The ENAMs were able to reduce the arsenic (III) concentration to less than 10 ppb, the level recommended by the World Health Organization (WHO). Moreover, the adsorptive properties of the nanocomposite fibers were restored to 94% of the original capacity by cleaning the membranes using sodium hydroxide solution followed by DI water flushing.
Nanofiber,Adsorption,PVDF,HNT,TiO2,As(III)
https://www.msrjournal.com/article_44992.html
https://www.msrjournal.com/article_44992_0a356ba27fcfef6927e40f60b8d2b3ea.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Effect of Composite Multi-Walled Carbon Nanotube and Zeolitic Imidazolate Framework-8 on the Performance and Fouling of PVDF Membranes
424
432
EN
Rosmawati
Naim
0000-0003-0643-6465
Faculty of Chemical & Process Engineering Technology,
College of Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang,
Pahang, Malaysia.
rosmawati@ump.edu.my
Nurul Hazreen Wanie
Hazmo
Faculty of Chemical & Process Engineering Technology,
College of Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang,
Pahang, Malaysia.
hazreenwanie@gmail.com
Lau
Woei Jye
0000-0001-8939-8518
Advanced Membrane Technology Research Centre (AMTEC), School and Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81130 Malaysia
lwoeijye@utm.my
Ahmad Fauzi
Ismail
Advanced Membrane Technology Research Centre (AMTEC), School and Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81130 Malaysia
afauzi@utm.my
10.22079/jmsr.2020.128313.1390
The incorporation of nanoparticles into a polymer membrane has been an attractive option to minimize the membrane fouling. Polyvinylidene fluoride (PVDF) nanocomposite membranes incorporated with multi-walled carbon nanotubes (MWCNTs) and zeolitic imidazolate framework-8 (ZIF-8) was prepared in this work via the blending method. The impact of the concentration of inorganic additives (0.1 wt.%, 0.3 wt.% and 0.5 wt.%) on the membrane properties was studied. The prepared membranes were characterized using scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDX) and goniometer to investigate changes in membrane properties. Water permeability and filtration performance test were performed using pure water, bovine serum albumin (BSA) and humic acid (HA) solution to evaluate the fouling resistance of the prepared membranes. Even though the permeate fluxes decreased over time, it was found that 0.5 wt.% of ZIF-8 in PVDF membrane produced the highest solute rejection for both HA (>94%) and BSA (>92%) as compared with PVDF/MWCNT membranes and pure PVDF membrane. It is concluded that the nanocomposite membranes showed improvement in the membrane hydrophilicity, permeability, and solute rejection as compared to the pure PVDF membrane. The anti-fouling properties of nanocomposite membranes was enhanced with higher flux recovery rate and lower flux declining rate compared to the pristine PVDF membrane.
Nanocomposite membrane Anti,fouling Zeolitic imidazole frameworks 8 Multi,walled carbon nanotube (MWCN)
https://www.msrjournal.com/article_44887.html
https://www.msrjournal.com/article_44887_1ad40c4421e327c7d738ca33989fc2aa.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
Electrospinning Growth Parameters Dependent PVP: PC71BM Nanofiber Structure Characterizations and Modeling
433
437
EN
Nurmin
Bolong
Faculty of Engineering
Universiti Malaysia Sabah (UMS)
nurmin@ums.edu.my
Ismail
Saad
Faculty of Engineering, Universiti Malaysia Sabah (UMS)
ismail_s@ums.edu.my
Bablu
K. Ghosh
Faculty of Engineering
Universiti Malaysia Sabah (UMS)
ghoshbab@ums.edu.my
10.22079/jmsr.2020.127883.1387
As green materials, the organic nano-fiber membranes are very potential for diverse functional purposes. The growth parameters based fiber alignment; surface morphology and diameter are key attentions to control mechanical, structural, electrical, and optical properties. These physical aspects of nanofiber are diversified its practical significance in which control of growth techniques is vital. Electrospinning is a facile but pragmatic approach to adjust the growth process by regulating growth parameters. In this study, fabrication of spinning parameter preference to control the nanofiber shape, diameters, and crystalline property are investigated. Different % weight of PVP and PC71BM mixture solution for electrospinning are used in this study. It is observed that the average applied field and solution concentration of active materials are paramount to well-aligned uniform diameter nanofiber having better structure and crystalline properties. The scanning electron microscopic (SEM) study of nanofiber micrograph shows the diameter size of nanofiber and it is validated by Response Surface Model (RSM). A sharp peak of polymer fiber is shown by X-ray diffraction (XRD) that realizes worthy nano-crystalline property. The overall growth process is reinforced by validation from RSM analysis.
Solar photovoltaic Polyvinylpyrrolidone Phenyl,C71,butyric acid methyl ester Nano,engineering Response Surface Model (RSM)
https://www.msrjournal.com/article_44478.html
https://www.msrjournal.com/article_44478_48597bc2532f595db932a52b196c35d9.pdf
FIMTEC & MPRL
Journal of Membrane Science and Research
2476-5406
6
4
2020
10
01
High-Performance Hemodialysis Membrane: Influence of Polyethylene Glycol and Polyvinylpyrrolidone in the Polyethersulfone Membrane
438
448
EN
Somayeh
Hasheminasab
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
neda.hasheminasab@gmail.com
Jalal
Barzin
0000-0002-4860-5805
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
j.barzin@ippi.ac.ir
Rahim
Dehghan
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
r.dehghan@ippi.ac.ir
10.22079/jmsr.2020.128323.1391
the preparation of high-performance hemodialysis membrane, the effect of polyethylene glycol (PEG), polyvinylpyrrolidone (PVP), and also the simultaneous effect of both additives in the polyethersulfone (PES) membrane were investigated. Viscosity measurements demonstrated that PVP has better compatibility with PES, owing to the amorphous nature, closer glassy transition temperature (Tg), and solubility parameters rather than PEG (semi-crystalline and low Tg). This could lead to enhancement in the solution viscosity. SEM results revealed that membranes morphology was dependent upon casting solution viscosity and with increasing viscosity; the formation of macro-voids suppressed and achieving to a membrane with a smaller mean pore size would be possible. The results of the AFM study demonstrated that, with the addition of PVP, membranes with smooth surface were achieved. In contrast, the PEG addition led to a rougher membrane surface. The results verified that PEG had a tangible effect on the permeability of membrane rather than PVP or blend of PVP and PEG, which is owing to its impressive pore-forming role. The maximum pure water permeability (PWP) was achieved for MV4 (24.9 L/m2.h.bar), MG2 (44.8 L/m2.h.bar), MVG2 (25.2 L/m2.h.bar), and MVG3 (25.1 L/m2.h.bar). Rejection test showed that MV3, MV4, MG3, MG4, MVG2, and MVG3 had the best performance in terms of urea removal and maintaining other components, especially bovine serum albumin (BSA). In-vitro cytotoxicity demonstrated the biocompatibility of MV2, MG3, and MVG3 as representative of all membranes. The lactate dehydrogenase (LDH) test confirmed that PVP has a tangible effect on the reduction of platelet adhesion on the membrane surface.
Hemodialysis membrane,Polyethersulfone (PES),Polyvinylpyrrolidone (PVP),Polyethylene glycol (PEG)
https://www.msrjournal.com/article_44474.html
https://www.msrjournal.com/article_44474_cafa828d5468c82fc137e7780c152e27.pdf