FIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Editorial Note: Membranes for Development51522996210.22079/jmsr.2018.80496.1174ENBart Van Der BruggenKatholieke Universiteit Leuven, BelgiumJournal Article20180130https://www.msrjournal.com/article_29962_b113ca64d0315bdcce39d074460bf34e.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Hyperbranched Polymer Integrated Membrane for the Removal of Arsenic(III) in Water53622754310.22079/jmsr.2017.67560.1148ENDavid EVlotmanDepartment of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa.Catherine JaneNgilaDepartment of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa.Thabile NdlovuDepartment of Chemistry, University of Swaziland, Private Bag 4, Kwaluseni, Swaziland.Soraya PhumzileMalingaP.O Box 17011, Doornfontein
Department of Applied Chemistry, University of JohannesburgJournal Article20170718<span class="fontstyle0">This work demonstrates the synthesis, characterization and application of a hyperbranched polyethyleneimine/polysulfone (HPEI/PSf) thin fi lm composite (TFC) membrane. The membrane was accessed via an interfacial polymerization of trimesoyl chloride and HPEI. The membrane samples were characterized by Fourier Transform Infrared-Attenuated Total Refl ectance (FTIR-ATR) spectroscopy, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Contact angle and streaming potential measurements were used to measure the wettability and study the surface chemistry of the TFC membranes, respectively. Water fl ux and rejection studies were performed using a dead-end fi ltration cell system operated at 600 kPa. The binding affi nity of the fabricated membranes to abstract As(III) from synthetic and spiked tap water samples was assessed. FTIR-ATR spectra illustrated that a polyamide fi lm was successfully deposited onto the commercial PSf membrane. AFM analysis revealed that the surface roughness of the membranes increased from 13.9 nm to 140.0 nm upon HPEI loading. Contact angle measurements indicated an increase in the hydrophilicity from 86.95° for pristine PSf to 39.97° for the HPEI modifi ed membranes. Generally, the HPEI/PSf membranes showed a high water uptake (up to 96.6±0.76%) as compared to the pristine PSf membranes (up to 53.5±0.7%). The hyperbranched polymer integrated membranes exhibited high As(III) retention of 78% and 55% for synthetic water and spiked tap water samples, respectively.</span>https://www.msrjournal.com/article_27543_467207d2f34d379f0b2d9c9ae092e3bf.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Physical Backwash Optimization in Membrane Filtration Processes: Seawater Ultrafiltration Case63682730910.22079/jmsr.2017.66624.1145ENFatma Zohra SlimaneINSAT, university of Carthage, tunis, tunisia.Fatma EllouzeDepartment of Biological and Chemical Engineering, INSAT, university of Carthage, Tunis, TunisiaGhofrane Ben Miledissbat, university of Tunis EL Manar, tunis, tunisiaNihel Ben AmarBiological and chemical engineering department, INSAT, University of Carthage, Tunis, TunisiaJournal Article20170620<span class="fontstyle0">Seawater ultrafi ltration (UF) as a pretreatment of reverse osmosis (RO) process in a thermal power plant was investigated using a 100 kDa hollow fi ber membrane. The choice of the UF physical backwash conditions remains arbitrary or ensuing from a sensibility study. As the optimum must take into account the factors interactions, we led a response surface study to analyze the eff ect of backwash interval BWI (30–90 min), backwash fl ow-rate BWF (10–34 L.min</span><span class="fontstyle0" style="font-size: 4pt;">-1</span><span class="fontstyle0">) and backwash duration BWD (15–45 s) on two responses: the Specific Flux Reduction (SFR) and the Net Water Production (NWP). Polynomial models describing the responses sensitivity with respect to the three variables were established to determine the optimal conditions corresponding to maximal NWP while assuring lowest fouling. Results showed that fouling is mainly controlled by BWI. For the NWP, all the variables are signifi cant especially their quadratic and interaction terms. Maximal NWP and low SFR can be reached at 30 min BWI, for a BWD and BWF ranges of [15-30 s] and [10-21 L.min</span><span class="fontstyle0" style="font-size: 4pt;">-1</span><span class="fontstyle0">], respectivel.</span>https://www.msrjournal.com/article_27309_f0113a07fd3438749c8ad953f1caf31f.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Pilot Study of Brackish Water Treatment using Dual Stage Nanofi ltration for Domestic Use in Thu Bon Basin, Vietnam69732719710.22079/jmsr.2017.67457.1146ENHa TranDepartment of Water supply and Sanitation
Faculty of Environmental Engineering
National University of Civil Engineering
Hanoi, VietnamHUYEN DANGDepartment of Water supply and Sanitation
Faculty of Environmental Engineering
National University of Civil Engineering
Hanoi, VietnamHoa QuocNguyenDepartment of Water supply and Sanitation
Faculty of Environmental Engineering
National University of Civil Engineering
Hanoi, VietnamTinh Thi HongNguyenFaculty of Environment and Chemical Technology
Duy Tan University
Da Nang, VietnamJournal Article20170706<span class="fontstyle0">Due to the impact of climate change, the process of salinity intrusion occurs frequently in coastal areas of Vietnam. The main objective of this study is therefore to try diff erent nanofi ltration (NF) processes (such as single-stage and dual-stage NF) to treat brackish water for residential areas in Thu Bon river basin, where the salinity varies signifi cant with seasons. Results have shown that during the rainy season, the salinity was less than 8.5‰, so the single stage NF worked perfectly. When season changes from rainy season to dry season, the river’s salinity increases up to 17.5‰, application of dual NF is most appropriate. This dual NF process not only guarantees the effl uent quality to meet National Technical Regulation, but also off ers reasonable energy cost and fi nally can prolong the membrane lifespan.<br /></span>https://www.msrjournal.com/article_27197_7eae1b53b7777b2f0adadb9c5f33d730.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Nanoparticles Retention Potential of Multichannel Hollow Fiber Drinking Water Production Membrane74842783610.22079/jmsr.2017.69079.1150ENMorgane LehirLM2P2, Aix Marseille UNiversityYvan WyartAix Marseille Universit&eacute;, CNRS, Centrale Marseille, M2P2 UMR 7340, Equipe Proc&eacute;d&eacute;s Membranaires (EPM), Europ&ocirc;le de l&rsquo;Arbois, BP80, Pavillon Laennec, Hall C, 13545 Aix en Provence Cedex, FranceGaelle GeorgesAix Marseille Université, CNRS, Centrale Marseille, Institut FRESNEL, UMR 7249, 13013, Marseille, FranceLaure SiozadeAix Marseille Université, CNRS, Centrale Marseille, Institut FRESNEL, UMR 7249, 13013, Marseille, FrancePhilippe MoulinEuropole de l&#039;Arbois, bat. Laennec, Hall C BP 80, 13545Journal Article20170730<span class="fontstyle0">This study aims to investigate the potential of nanoparticle retention of ultrafi ltration (UF) multichannel hollow fiber membrane. Filtration experiments of fl uorescent silica nanoparticles (NPs) (10 and 100 nm) and CdTe quantum dots (1.5 nm) suspensions were carried out under diff erent operating conditions to analyze the retention rate (RT), the fouling zone and the membrane productivity. Fouling mechanism occurring during the experiment has been correlated with the distribution profi les of NPs obtained during the membrane autopsy after fi ltration by Confocal Laser Scanning Microscopy (CLSM). Results show that large NPs are totally retained on the membrane surface. Medium NPs pass through the membrane at the beginning of the fi ltration and are gradually stopped in the membrane skin before forming a deposit on the membrane surface. The retention rate of small NPs also increases over time and an in-depth fouling of the membrane (skin + support) has been identifi ed. Mass balance and determination of NPs surface deposit thickness, in the case of a filtration cake, determined by CLSM and scanning electron microscopy (SEM) allowed the estimation of NPs amount trapped in the membrane structure (skin or support) and have been compared to the fouling resistance observed during the filtration run. The CLSM analysis of the membrane on its section presents, in that study, a signifi cant interest because of the high accuracy of the measures: 538.16 nm compared to the 5000 nm reported in a previous study.</span>https://www.msrjournal.com/article_27836_d909b372a6fdf89bb18da5bb066e88c6.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Insight of Interactions during Uptake and Permeation in Nafi on Ionomer Membrane85922972010.22079/jmsr.2018.71696.1159ENJayshree RamkumarACD, Bhabha Atomic Research Centre, TrombayS. ChandramouleeswaranBARC, MumbaiM. BasuBARC, MumbaiVrindaDevi K.VBARC, MumbaiJournal Article20170912<span class="fontstyle0">The eff ect of pre-treatment on the permeation property of the Nafi on ionomer membrane has been evaluated. The membranes were subjected to diff erent pre-treatment procedures, viz treated with acid at room temperature, boiling with acid or boiling with water followed by cold acid. Diff erent characterization techniques were used to understand the changes. From UV-Visible spectra, it was possible to identify the presence of water clusters and this was found to be maximum when the membrane was boiled with acid. Thermal analysis of the membranes also refl ected the changes in structure due to pre-treatment. The characterizations of dye loaded membranes were also carried out. Image analysis refl ected the changes in structure due to pre-treatment. The spectrophotometric and thermal studies of the dye loaded membranes carried out showed that the two dyes interacted diff erently with Nafi on. The permeation of dyes through Nafi on showed that values of permeability and diff usion coeffi cients were also dependent on the nature of both the dye and pre-treatment procedure.<br /></span>https://www.msrjournal.com/article_29720_e973bc9d0a3e9cf8b22204a6bb352122.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401PES/Quaternized-PES Blend Anion Exchange Membranes: Investigation of Polymer Compatibility and Properties of the Blend931003000610.22079/jmsr.2018.74701.1163ENMonaheng MasheaneNanotechnology and Water Sustainability Research Unit, University of South Africa0000-0002-4590-3735Arne VerliefdeFaculty of Bioscience EngineeringSabelo MhlangaNanotechnology and Water Sustainability Research Unit, University of South AfricaJournal Article20171108<span class="fontstyle0">Polyethersulfone (PES)-based anion exchange blend membranes were prepared from quaternized-PES (Q-PES) and N-Methyl-2-pyrrolidone (NMP) casting solutions with water as coagulant via non-solvent induced phase inversion. The compatibility of the blend system was investigated through thermodynamic studies while membrane formation was determined using the cloud point technique. The properties of the membranes were investigated using atomic force microscopy (AFM), contact angle measurements and SurPASS Electrokinetic analysis. The ion exchange capacity (IEC) and the swelling of the membranes were also investigated. The PES/Q-PES blend system was compatible at the mass ratio of 0.70:0.30, thus leading to delay in demixing of the solvent and non-solvent during phase inversion. Below 0.70:0.30 mass ratio, the blend system is incompatible, leading to instantaneous demixing of the solvent and non-solvent during the phase inversion process. The roughness and surface charge density increased with the increasing addition of Q-PES while the total surface energy decreased. The IEC increased with the addition of Q-PES while the swelling decreased. Therefore, a suitable compatibility of PES:Q-PES at a mass ratio of 0.70:0.30 and below is the prerequisite for an eff ective blend system. The conductivity and electrical resistance of the blend membranes were enhanced by the addition of Q-PES additive, while the tensile strength was compromised.</span>https://www.msrjournal.com/article_30006_cfb864229d0f145eb03b3a30e1b0e5fd.pdfFIMTEC & MPRLJournal of Membrane Science and Research2476-54064220180401Decolorization of Dyeing Effl uent by Novel Ultrafi ltration Ceramic Membrane from Low Cost Natural Material1011072811010.22079/jmsr.2017.69818.1154ENRaja BEN AMARChemical Department
Faculty of Science of Sfax
University Of Sfax - Tunisia0000-0001-6649-4929Mouna KhemakhemLaboratoire Sciences des Matériaux et Environnement, Université de Sfax, Faculté des sciences de Sfax, Rte. de Soukra Km 4, 3018 Sfax, TunisiaAbdallah OunChemical department , faculty of science of sfax tunisiaSophie CerneauxInstitut Europeen des Membranes, UMR 5635 (CNRS, ENSCM, UM ), Université de Monpellier, FranceMarc CretinInstitut Europeen des Membranes, UMR 5635 (CNRS, ENSCM, UM), Université de Monpellier, FranceSabeur Khemakhemchemical department IPEIS Université de sfax, tunisiaJournal Article20170810<span class="fontstyle0">This paper is devoted to the application of new low cost ceramic ultrafi ltration membranes material coming from the Tunisian ores (mud) which is usually considered as disastrous for the environment. A ceramic tubular support previously elaborated from mud was coated in the lumen side by slip casting method. After sintering at 650°C, the coated membrane shows homogeneous layer without cracks, with a pore diameter of 11 nm. The coating has the thickness of ~9 µm and water permeability of the prepared membrane is 90 L/h.m</span><span class="fontstyle0" style="font-size: 4pt;">2</span><span class="fontstyle0">.bar. Then the prepared membrane has been applied for treating of dyeing wastewater under 5 bar pressure. The result was interesting with a permeate fl ux of 65 l/h.m</span><span class="fontstyle0" style="font-size: 4pt;">2</span><span class="fontstyle0">, pollutants retention rate of 90% for COD and almost a total retention of turbidity and color, respectively. The membrane can then be regenerated by using a chemical washing.</span>https://www.msrjournal.com/article_28110_8f97eff4064823c0accbadd5e00b90db.pdf