ORIGINAL_ARTICLE
Graphical Abstracts
https://www.msrjournal.com/article_45682_aa412c13c73a184f83d236c0c5618caa.pdf
2020-10-01
344
348
ORIGINAL_ARTICLE
Professor Ahmad Fauzi Ismail: A remarkable individual, educator, mentor, and a dear friend
https://www.msrjournal.com/article_45683_a90ee565e1a41a39c19886e94316adbc.pdf
2020-10-01
349
350
Takeshi
Matsuura
matsuura@uottawa.ca
1
Industrial Membrane Research Laboratory, Department of Chemical and Biological Engineering, University of Ottawa, On. K1N 6N5, Canada
LEAD_AUTHOR
Pei Sean
Goh
peisean@petroleum.utm.my
2
Universiti Teknologi Malaysia
LEAD_AUTHOR
ORIGINAL_ARTICLE
Effect of Surface Modification with Electrospun Nanofibers on the Performance of an Ultrafiltration Membrane
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.
https://www.msrjournal.com/article_39146_bbadc121f54b16379bc1ed8f6961a132.pdf
2020-10-01
351
358
10.22079/jmsr.2020.119481.1319
Ultrafiltration membrane
surface coating by nanofiber electrospinning
PVDF nanofibers
pure water permeation flux
river water fouling
protein fouling
Ladan
Zoka
ladanzoka@yahoo.co.uk
1
Department of Civil Engineering, University of Ottawa
AUTHOR
Roberto
Narbaitz
narbaitz@uottawa.ca
2
Department of Civil Engineering, University of Ottawa
AUTHOR
Takeshi
Matsuura
matsuura@eng.uottawa.ca
3
University of Ottawa, Canada
LEAD_AUTHOR
ORIGINAL_ARTICLE
Physical Studies of Forward Osmosis Membranes Prepared by Cross-linking Polyvinyl Alcohol on Electrospun Nanofibers
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.
https://www.msrjournal.com/article_39202_93fac7dea6b32365dafa0e3272f81414.pdf
2020-10-01
359
366
10.22079/jmsr.2020.117738.1310
Electrospinning
Electrospun nanofibrous membranes
Composite membranes
Forward osmosis
Polyvinyl alcohol
Nurafidah
Arsat
nurafidaharsat@gmail.com
1
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Juhana
Jaafar
juhana@petroleum.utm.my
2
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
LEAD_AUTHOR
Woei Jye
Lau
lwoeijye@utm.my
3
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Mohd Hafiz Dzarfan
Othman
dzarfan@utm.my
4
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Mukhlis
A Rahman
r-mukhlis@utm.my
5
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Farhana
Aziz
farhanaaziz@utm.my
6
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Norhaniza
Yusof
norhaniza@utm.my
7
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Wan Norharyati
Wan Salleh
w-norharyati@utm.my
8
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
Ahmad Fauzi
Ismail
afauzi@utm.my
9
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
AUTHOR
ORIGINAL_ARTICLE
Plasticization Modeling in Cellulose Acetate/NaY Mixed Matrix Membranes
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.
https://www.msrjournal.com/article_44456_785526970908a5e031551f03711d421e.pdf
2020-10-01
367
374
10.22079/jmsr.2020.128618.1394
Mixed Matrix Membrane
Plasticization
Modeling
Zeolite
CO2 separation
Einallah
Khademian
ainallah.khademian@gmail.com
1
Petrochemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Mahshahr Campus, P.O. Box 415, Mahshahr, Iran
AUTHOR
Mostafa
Keshavarz Moraveji
moraveji@aut.ac.ir
2
Chemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
AUTHOR
Mitra
Dadvar
dadvar@aut.ac.ir
3
Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, P.O. Box 15875-4413, Iran
AUTHOR
Hamidreza
Sanaeepur
h.sanaee@yahoo.com
4
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran.
LEAD_AUTHOR
ORIGINAL_ARTICLE
Enhancement of Antifouling of Ultrafiltration Polyethersulfone Membrane with Hybrid Mg(OH)2/Chitosan by Polymer Blending
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.
https://www.msrjournal.com/article_40300_55a3e02696fed322be8620d583cff227.pdf
2020-10-01
375
382
10.22079/jmsr.2020.124107.1365
Polyethersulfone (PES)
Mg(OH)2
Chitosan
Hydrophilicity
Antifouling
Umi
Fathanah
umifathanah@unsyiah.ac.id
1
Doctoral School of Engineering, Universitas Syiah Kuala, Darussalam, Banda Aceh 23111, Indonesia
AUTHOR
Izarul
Machdar
machdar@unsyiah.ac.id
2
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
AUTHOR
Medyan
Riza
medyan_riza@unsyiah.ac.id
3
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
AUTHOR
Nasrul
Arahman
nasrular@unsyiah.ac.id
4
Department of Chemical Engineering, Syiah Kuala University, Banda Aceh, Indonesia
LEAD_AUTHOR
Mukramah
Yusuf
mukramah@mhs.unsyiah.ac.id
5
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
AUTHOR
Syawaliah
Muchtar
syawaliah2009@gmail.com
6
Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7. Darussalam, Banda Aceh, 23111, Indonesia;
AUTHOR
Muhammad
Bilad
mroil.bilad@utp.edu.my
7
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
AUTHOR
Nik Abdul Hadi
Md Nordin
nahadi.sapiaa@utp.edu.my
8
Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak
AUTHOR
ORIGINAL_ARTICLE
Effect of Hydrophilic-Hydrophilic Interactions between the Foulant and Membrane Surface on the Fouling Propensity of Different Foulants
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.
https://www.msrjournal.com/article_43636_ccfbd7e4e58ed00ca7855da96ca66f30.pdf
2020-10-01
383
389
10.22079/jmsr.2020.128995.1396
Membrane fouling Zwitterion grafting Hydrophilic interaction Foulants chemical structure Anti
fouling membranes
Saeid
Rajabzadeh
rajabzadehk@people.kobe-u.ac.jp
1
Kobe Univeristy
AUTHOR
Hiroki
Awaji
192t401t@stu.kobe-u.ac.jp
2
Kobe University
AUTHOR
Yuchen
Sun
no_cl_2@hotmail.com
3
Kobe Univerisity
AUTHOR
Daisuke
Saeki
dsaeki@shinshu-u.ac.jp
4
Shinshu University
AUTHOR
Noriaki
Kato
noriaki_kato@people.kobe-u.ac.jp
5
Kobe University
AUTHOR
Hideto
Matsuyama
matuyama@kobe-u.ac.jp
6
Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501,Japan
LEAD_AUTHOR
ORIGINAL_ARTICLE
Demulsification Performance of Superhydrophobic PVDF Membrane: A Parametric Study
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.
https://www.msrjournal.com/article_40603_20453720248342e0a496256df9b5fdf0.pdf
2020-10-01
390
394
10.22079/jmsr.2020.122768.1353
water in oil emulsion
Polyvinylidene difluoride (PVDF)
superhydrophobic membranes
permeate flux
surfactant concentration
operational stability
Fawzi
Banat
fawzi.banat@ku.ac.ae
1
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
LEAD_AUTHOR
Abdul
Hai
abdul.hai@ku.ac.ae
2
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
AUTHOR
Munirasu
Selvaraj
munirasu@gmail.com
3
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
AUTHOR
Bharath
Govindan
bharath.govindan@ku.ac.ae
4
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates
AUTHOR
Rambabu
Krishnamoorthy
rambabu.krishnamoorthy@ku.ac.ae
5
Department of Chemical Engineering, Khalifa University of Science and Technology, SAN Campus, P.O. Box 127788, Abu Dhabi, United Arab Emirates
AUTHOR
Shadi
Hassan
shadi.hasan@ku.ac.ae
6
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
AUTHOR
ORIGINAL_ARTICLE
Performance and Characterizations of [EMIM][Tf2N] and Silica Direct Blending in Mixed Matrix Membrane for CO2 /CH4 Separation
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.
https://www.msrjournal.com/article_40483_cc2bee5084c8edd8922e07549309995e.pdf
2020-10-01
395
400
10.22079/jmsr.2020.120978.1341
CO2 separation
Ionic liquids (ILs)
[EMIM][Tf2N]
Mixed Matrix Membrane
IL blend membrane
Nik Abdul Hadi
Md Nordin
nahadi.nordin@gmail.com
1
Department of Chemical Engineering, Universiti Teknologi PETRONAS
LEAD_AUTHOR
Siti Nur Alwani
Shafie
alwanishafie93@gmail.com
2
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
AUTHOR
Muhammad Amirul Mukmin
Marzuki
amirul.mukmeen@gmail.com
3
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
AUTHOR
Muhammad Roil
Bilad
mroil.bilad@utp.edu.my
4
Department of Chemical Engineering, Universiti Teknologi Petronas, Malaysia
AUTHOR
Norazlianie
Sazali
azlianie@ump.edu.my
5
Faculty of Mechanical Engineering, Universiti Malaysia Pahang
AUTHOR
Noor Maizura
Ismail
maizura@ums.edu.my
6
Faculty of Engineering, Universiti Malaysia Pahang
AUTHOR
A.F.
Ismail
afauzi@utm.my
7
Advanced Membrane Technology Center (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
AUTHOR
ORIGINAL_ARTICLE
Anti-Wetting Membrane Distillation to Treat High Salinity Wastewater: Review
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.
https://www.msrjournal.com/article_44458_a052bfa8de18db35ff5da757400b8649.pdf
2020-10-01
401
415
10.22079/jmsr.2020.129954.1400
Membrane Distillation (MD)
Desalination
Energy Efficiency
superhydrophobic modifications
Aquaculture
Jing Yi
Chin
chin.jingyi96@gmail.com
1
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia
AUTHOR
Abdul Latif
Ahmad
chlatif@usm.my
2
School of Chemical Engineering, Universiti Sains Malaysia.
AUTHOR
Siew Chun
Low
chsclow@usm.my
3
School of Chemical Engineering Universiti Sains Malaysia Engineering Campus 14300 Nibong Tebal Pulau Pinang Malaysia
LEAD_AUTHOR
ORIGINAL_ARTICLE
Novel Nanocomposite HNT-TiO2/PVDF Adsorptive Nanofiber Membranes for Arsenic (III) Removal
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-HNTto 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.
https://www.msrjournal.com/article_44992_0a356ba27fcfef6927e40f60b8d2b3ea.pdf
2020-10-01
416
423
10.22079/jmsr.2020.135081.1407
Nanofiber
Adsorption
PVDF
HNT
TiO2
As(III)
Ali
Moslehyani
ali.moslehyani@yahoo.com
1
Advanced Membrane Technology Research Center (AMTEC), Petroleum Engineering, University Technology Malaysia (UTM)
AUTHOR
Ramin
Farnood
ramin.farnood@utoronto.ca
2
Chemical Engineering and Applied Chemistry Department, University of Toronto, On., M5S 3E5, Canada
LEAD_AUTHOR
Shahram
Tabe
shahram.tabe@ontario.ca
3
Ministry of the Environment and University of Toronto
AUTHOR
Takeshi
Matsuura
matsuura@uottawa.ca
4
Industrial Membrane Research Laboratory, Department of Chemical and Biological Engineering, University of Ottawa, On. K1N 6N5, Canada
AUTHOR
Ahmad Fauzi
Ismail
fauzi.ismail@gmail.com
5
Advanced Membrane Technology Research Center (AMTEC), UTM, Malaysia
AUTHOR
ORIGINAL_ARTICLE
Effect of Composite Multi-Walled Carbon Nanotube and Zeolitic Imidazolate Framework-8 on the Performance and Fouling of PVDF Membranes
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.
https://www.msrjournal.com/article_44887_1ad40c4421e327c7d738ca33989fc2aa.pdf
2020-10-01
424
432
10.22079/jmsr.2020.128313.1390
Nanocomposite membrane Anti
fouling Zeolitic imidazole frameworks 8 Multi
walled carbon nanotube (MWCN)
Rosmawati
Naim
rosmawati@ump.edu.my
1
Faculty of Chemical & Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia.
LEAD_AUTHOR
Nurul Hazreen Wanie
Hazmo
hazreenwanie@gmail.com
2
Faculty of Chemical & Process Engineering Technology, College of Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia.
AUTHOR
Lau
Woei Jye
lwoeijye@utm.my
3
Advanced Membrane Technology Research Centre (AMTEC), School and Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81130 Malaysia
AUTHOR
Ahmad Fauzi
Ismail
afauzi@utm.my
4
Advanced Membrane Technology Research Centre (AMTEC), School and Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81130 Malaysia
AUTHOR
ORIGINAL_ARTICLE
Electrospinning Growth Parameters Dependent PVP: PC71BM Nanofiber Structure Characterizations and Modeling
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.
https://www.msrjournal.com/article_44478_48597bc2532f595db932a52b196c35d9.pdf
2020-10-01
433
437
10.22079/jmsr.2020.127883.1387
Solar photovoltaic Polyvinylpyrrolidone Phenyl
C71
butyric acid methyl ester Nano
engineering Response Surface Model (RSM)
Nurmin
Bolong
nurmin@ums.edu.my
1
Faculty of Engineering
Universiti Malaysia Sabah (UMS)
LEAD_AUTHOR
Ismail
Saad
ismail_s@ums.edu.my
2
Faculty of Engineering, Universiti Malaysia Sabah (UMS)
AUTHOR
Bablu
K. Ghosh
ghoshbab@ums.edu.my
3
Faculty of Engineering Universiti Malaysia Sabah (UMS)
AUTHOR
ORIGINAL_ARTICLE
High-Performance Hemodialysis Membrane: Influence of Polyethylene Glycol and Polyvinylpyrrolidone in the Polyethersulfone Membrane
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.
https://www.msrjournal.com/article_44474_cafa828d5468c82fc137e7780c152e27.pdf
2020-10-01
438
448
10.22079/jmsr.2020.128323.1391
Hemodialysis membrane
Polyethersulfone (PES)
Polyvinylpyrrolidone (PVP)
Polyethylene glycol (PEG)
Somayeh
Hasheminasab
neda.hasheminasab@gmail.com
1
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
AUTHOR
Jalal
Barzin
j.barzin@ippi.ac.ir
2
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
LEAD_AUTHOR
Rahim
Dehghan
r.dehghan@ippi.ac.ir
3
Department of Biomaterials, Iran Polymer & Petrochemical Institute, Tehran, Iran
AUTHOR