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Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment

Al-Jadir Thaer, Alardhi Saja Mohsen, Alheety Mustafa A., Najim Aya A., Salih Issam K., Al-Furaiji Mustafa, Alsalhy Qusay F.

Journal of Ecological Engineering

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2022

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Vol. 23, nr 12

1--13

EN

Polyphenylsulfone (PPSU) membranes are critical for numerous applications, including water treatment, oil separation, energy production, electronic manufacturing, and biomedicine because of their low cost; regulated crystallinity; and chemical, thermal, and mechanical stability. Numerous studies have shown that altering the surface characteristics of PPSU membranes affects their stability and functionality. Nanocomposite membranes of PPSU (P0), PPSU-1%TiO2 (P1), and PPSU-2% TiO2 (P2) were prepared using the phase inversion method. Scanning electron microscopy and thermal analysis were performed to determine the contact angle and mechanical integrity of the proposed membranes. The results showed that the membranes contained channels of different diameters extending between 1.8 μm and 10.3 μm, which made them useful in removing oil. Thermal measurements showed that all of the PPSU membranes were stable at a temperature of not less than 240 °C, and had good mechanical properties, including tensile strength of 7.92 MPa and elongation of 0.217%. These properties enabled them to function in a harsh thermal environment. The experimental results of oil and water separation and BSA solution fouling on membrane P2 showed a 92.95% rejection rate and a flux recovery ratio of 82.56%, respectively, compared to P0 and P1.

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Removal of reactive dyes from aqueous solutions using ultrafiltration membranes

Ahmed Arif Eftekhar, Majewska-Nowak Katarzyna, Grzegorzek Martyna

Environment Protection Engineering

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2021

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Vol. 47, nr 3

109--120

EN

The removal of five reactive dyes varying in molecular weight (Reactive Orange 16, Remazol Brilliant Blue R, Reactive Orange 20, Reactive Black 5, Reactive Red 120) was evaluated by using flat ultrafiltration membranes made of polyethersulfone (PES) and regenerated cellulose (C) characterized by various cut-off values (5, 10, and 30 kDa). The ultrafiltration process was performed in a dead-end mode under the transmembrane pressure range of 0.05–0.2 MPa. Dye concentration in model solutions was equal to 100 mg/dm3. The separation efficiency of all tested dyes was strongly dependent on the membrane type and the membrane cut-off, as well as on the applied pressure. Unexpectedly, the molecular weight of the tested reactive dyes had a minor impact on the dye removal effectiveness. The ultrafiltration membranes made of polyethersulfone and regenerated cellulose can be used in reactive dye removal on the condition that the membrane cut-off is not higher than 10 kDa. The PES and C membranes enable the separation of reactive dyes by 80–97%, and 45–89%, respectively.

3

Ultrafiltration membranes from polysulfone and sulfonated polysulfone in metal ions dialysis enhanced by polyelectrolyte

Poźniak G.

Ars Separatoria Acta

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2006

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No. 4

50-56

EN

The dialysis of metal ions including Mg(II), Ni(II) and Zn(II) through ultrafiltration membranes made of polysulfone and sulfonated polysulfone was enhanced by sodium salt of poly(acrylic acid) diluted in the receiving compartment. In experiments, concentration of Mg(II), Ni(II) and Zn(II) in the feed solution was equal to 10-3 mol/dm3, concentration of polymer in the receiving solution was equal to 10-2 mol/dm3, and pH = 9. In the presence of complexing polymer, concentration of all metal ions in the receiving solution is higher than 50% for the polysulfone membrane and increases to almost 100% for the sulfonated polysulfone membrane. This effect is due to a cation-exchange property of the sulfonated polysulfone membrane.

4

Oczyszczanie membran ultrafiltracyjnych przy pomocy immobilizowanych enzymów

Rucka M., Turkiewicz B., Poźniak G.

Zeszyty Naukowe. Inżynieria Chemiczna i Procesowa / Politechnika Łódzka

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1999

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Z. 26

153-158

PL

Przedmiotem naszych prac było zbadanie możliwości wykorzystania enzymów jako czynników zapobiegających zatykaniu membran ultrafiltracyjnych podczas filtracji roztworów białek. Osady tworzące się podczas ultrafiltracji roztworów pochodzenia biologicznego znacznie zmniejszają przepływ filtratu. Badania prowadziliśmy na membranach UF z octanu celulozy, polichlorku winylu) oraz z polisulfonu. Do ultrafiltracji roztworu kazeiny stosowaliśmy membrany enzymatyczne z immobilizowana papainą uzyskując kilkudziesięcio procentowy wzrost przepływu ultrafiltratu.

EN

In this study we examine ultrafiltration membranes with proteolytic activity to reduce the protein fouling of membrane during ultrafiltration of a casein solution. We use membranes made from blend of aminated polysulfone, cellulose acetate and poly (vinyl chloride) to immobilize papain. Ultrafiltration membranes with proteotytic activity are promising material to design and develop effective tools for concentration of protein solutions.