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 Mixed-Matrix Membranes Comprising of Polysulfone and Porous UiO-66, Zeolite 4A, and Their Combination: Preparation, Removal of Humic Acid, and Antifouling Properties

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 393
Author(s):  
Tanzila Anjum ◽  
Rahma Tamime ◽  
Asim Laeeq Khan
Keyword(s):  
Humic Acid ◽  
High Performance ◽  
Synergistic Effects ◽  
Pure Water ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Zeolite 4A ◽  
Pure Water Flux ◽  
Matrix Membranes

High-performance Mixed-Matrix Membranes (MMMs) comprising of two kinds of porous fillers UiO-66 and Zeolite 4Aand their combination were fabricated with polysulfone (PSf) polymer matrix. For the very first time, UiO-66 and Zeolite 4A were jointly used as nanofillers in MMMs with the objective of complimenting synergistic effects. The individual and complimentary effects of nanofillers were investigated on membrane morphology and performance, pure water flux, humic acid rejection, static humic acid adsorption, and antifouling properties of membranes. Scanning Electron Microscopy (SEM) analysis of membranes confirmed that all MMMs possessed wider macrovoids with higher nanofiller loadings than neat PSf membranes and the MMMs (PSf/UiO-66 and PSf/Zeolite 4A-UiO-66) showed tendency of agglomeration with high nanofiller loadings (1 wt% and 2 wt%). All MMMs exhibited better hydrophilicity and lower static humic acid adsorption than neat PSf membranes. Pure water flux of MMMs was higher than neat PSf membranes but the tradeoff between permeability and selectivity was witnessed in the MMMs with single nanofiller. However, MMMs with combined nanofillers (PSf/Zeolite 4A-UiO-66) showed no such tradeoff, and an increase in both permeability and selectivity was achieved. All MMMs with lower nanofiller loadings (0.5 wt% and 1 wt%) showed improved flux recovery. PSf/Zeolite 4A-UiO-66 (0.5 wt%) membranes showed the superior antifouling properties without sacrificing permeability and selectivity.

scholarly journals Fabrication and Characterization of Polysulfone-Zeolite ZSM-5 Mixed Matrix Membrane for Heavy Metal Ion Removal Application

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
G. P. Syed Ibrahim ◽  
Arun M. Isloor ◽  
Amir Al Ahmed ◽  
B. Lakshmi
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Pure Water ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Inversion Method ◽  
Mixed Matrix ◽  
Matrix Membranes

Mixed matrix membranes (MMMs) of Polysulfone (PSf)-Zeolite ZSM-5 (ZZSM-5) were prepared by phase inversion method with a dose ranging from 1.0 to 4.0 Wt. % with polyvinylpyrrolidone (PVP) as the fore forming agent. The prepared mixed matrix membranes were scrutinized for their permeation, hydrophilicity and anti-fouling nature. Characterization of the membrane was carried out by Electrokinetic analyzer. The heavy metal ions rejection experiment has been carried out and the results manifested that, the PZM-4 membrane exhibits higher pure water flux of 348.88 L/m2 h, contact angle of 72.7o and the heavy meals rejection of Pb2+ (98.54%) and of Cd2+ (95.32%) ions. Taken as a whole, the modified PSf-ZZSM-5 ultrafiltration membranes are the attractive candidate for the water treatment.

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 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 Polydopamine-Assisted Two-Dimensional Molybdenum Disulfide (MoS2)-Modified PES Tight Ultrafiltration Mixed-Matrix Membranes: Enhanced Dye Separation Performance

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 96
Author(s):  
Huali Tian ◽  
Xing Wu ◽  
Kaisong Zhang
Keyword(s):  
Pore Size ◽  
High Performance ◽  
Pure Water ◽  
Water Flux ◽  
Rejection Rate ◽  
Mixed Matrix Membranes ◽  
Inversion Method ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Matrix Membranes

Tight ultrafiltration (TUF) membranes with high performance have attracted more and more attention in the separation of organic molecules. To improve membrane performance, some methods such as interface polymerization have been applied. However, these approaches have complex operation procedures. In this study, a polydopamine (PDA) modified MoS2 (MoS2@PDA) blending polyethersulfone (PES) membrane with smaller pore size and excellent selectivity was fabricated by a simple phase inversion method. The molecular weight cut-off (MWCO) of as-prepared MoS2@PDA mixed matrix membranes (MMMs) changes, and the effective separation of dye molecules in MoS2@PDA MMMs with different concentrations were obtained. The addition amount of MoS2@PDA increased from 0 to 4.5 wt %, resulting in a series of membranes with the MWCO values of 7402.29, 7007.89, 5803.58, 5589.50, 6632.77, and 6664.55 Da. The MWCO of the membrane M3 (3.0 wt %) was the lowest, the pore size was defined as 2.62 nm, and the pure water flux was 42.0 L m−2 h−1 bar−1. The rejection of Chromotrope 2B (C2B), Reactive Blue 4 (RB4), and Janus Green B (JGB) in aqueous solution with different concentrations of dyes was better than that of unmodified membrane. The separation effect of M3 and M0 on JGB at different pH values was also investigated. The rejection rate of M3 to JGB was higher than M0 at different pH ranges from 3 to 11. The rejection of M3 was 98.17–99.88%. When pH was 11, the rejection of membranes decreased with the extension of separation time. Specifically, at 180 min, the rejection of M0 and M3 dropped to 77.59% and 88.61%, respectively. In addition, the membrane had a very low retention of salt ions, Nacl 1.58%, Na2SO4 10.52%, MgSO4 4.64%, and MgCl2 1.55%, reflecting the potential for separating salts and dyes of MoS2@PDA/PES MMMs.

scholarly journals THE EFFECT OF TYPE ZEOLITE ON THE GAS TRANSPORT PROPERTIES OF POLYIMIDE-BASED MIXED MATRIX MEMBRANES

REAKTOR ◽  
2008 ◽  
Vol 12 (2) ◽  
pp. 68 ◽  
Author(s):  
Tutuk Djoko Kusworo ◽  
Ahmad Fauzi Ismail ◽  
Azeman Mustafa ◽  
Kang Li
Keyword(s):  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Scanning Calorimetry ◽  
Zeolite 4A ◽  
Intensity Changes ◽  
Zeolite Type ◽  
Type Zeolite ◽  
Matrix Membranes

The permeation rates of O2, N2, CO2 and CH4 has been studied for polyimide-polyethersulfone (PI/PES) blends-zeolite mixed matrix membranes synthesized in our laboratory. The study investigated the effect of zeolite loading and different zeolite type on the gas separation performance of these mixed matrix membranes. Frequency shifts and absorption intensity changes in the FTIR spectra of the PI/PES blends as compared with those of the pure polymers indicate that there is a mixing of polymer blends at the molecular level. Differential scanning calorimetry measurements of pure and PI/PES blends membranes have showed one unique glass transition temperature that supports the miscible character of the PI/PES mixture. The PI/PES-zeolite 4A mixed matrix membrane with 25 wt % zeolite loading produced the highest O2/N2 and CO2/CH4 selectivity of around 7.45 and 46.05, respectively.

Recovery of acetone from aqueous solution by ZIF-7/PDMS mixed matrix membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28394-28400 ◽  
Author(s):  
Yunpan Ying ◽  
Yuanlong Xiao ◽  
Jing Ma ◽  
Xiangyu Guo ◽  
Hongliang Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Excellent Performance ◽  
Fermentation Broths ◽  
Matrix Membranes

Mixed matrix membrane containing ZIF-7 exhibits the excellent performance in the recovery of acetone from fermentation broths.

Fabrication and Characterization of PVDF/UiO-66(Zr) Mixed Matrix Membrane on Non-Woven PET Support

2020 ◽  
Vol 1005 ◽  
pp. 108-115
Author(s):  
John Rhoel Cementina ◽  
Michael V. Torres ◽  
Dante P. Bernabe ◽  
Stephen Lirio ◽  
Micah Belle Marie Yap Ang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Polyvinylidene Fluoride ◽  
Gas Permeability ◽  
Metal Organic Framework ◽  
Pure Water ◽  
Polymer Concentration ◽  
Water Flux ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Metal Organic

Polyvinylidene fluoride (PVDF) membranes, enhanced with metal-organic framework (MOF), were fabricated on a non-woven polyethylene terephthalate (PET) support using the non-solvent induced phase inversion (NIPS) method to produce mixed matrix membrane (MMM). Polymer concentration of 10%, 15%, and 20% were used in the study whereas UiO-66(Zr) was used as a MOF filler. The resulting membranes were characterized in terms of their morphology, porosity, wettability, mechanical strength, pure water flux, and gas permeability. Results show that the presence of UiO-66(Zr) filler improved membrane morphology, mechanical strength, and hydrophobicity of MMM as compared to pristine PVDF.

scholarly journals CO2-philic moderate selective layer mixed matrix membranes containing surface functionalized NaX towards highly-efficient CO2 capture

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15542-15553 ◽  
Author(s):  
Mohammad Salehi Maleh ◽  
Ahmadreza Raisi
Keyword(s):  
Co2 Capture ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Promising Candidate ◽  
Selective Layer ◽  
Highly Efficient ◽  
Industrial Gases ◽  
Matrix Membranes

A functional moderate selective layer mixed matrix membrane (F-MSL-MMM) is a promising candidate to obtain superior separation of industrial gases, compared to commonly mixed matrix membranes.

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