Influence of the procedure of casting solution preparation on the antimicrobial properties of polyethersulfone membranes modified with titanate nanotubes

2021 ◽  
Vol 214 ◽  
pp. 273-285
Author(s):  
Sylwia Mozia ◽  
Paulina Sienkiewicz ◽  
Kacper Szymański ◽  
Dominika Darowna ◽  
Adam Czyżewski ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Titanate Nanotubes ◽  
Casting Solution ◽  
Solution Preparation

A PVDF/PVB composite UF membrane improved by F-127-wrapped fullerene for protein waste-water separation

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83510-83519 ◽  
Author(s):  
Gui-E Chen ◽  
Wei-Wei Zhu ◽  
Sun-Jie Xu ◽  
Zhen-Liang Xu ◽  
Qian Shen ◽  
...  
Keyword(s):  
Waste Water ◽  
Composite Membrane ◽  
Water Separation ◽  
Casting Solution ◽  
Protein Waste ◽  
Solution Preparation

F-127-wrapped fullerene was prepared successfully in a solvent before casting solution preparation, the composite membrane shows excellent hydrophilicity and capacity for protein waste-water separation.

Polyethersulfone ultrafiltration membranes modified with hybrid Ag/titanate nanotubes: physicochemical characteristics, antimicrobial properties and fouling resistance

2018 ◽  
Vol 128 ◽  
pp. 106-118 ◽  
Author(s):  
Sylwia Mozia ◽  
Manu Jose ◽  
Paulina Sienkiewicz ◽  
Kacper Szymanski ◽  
Dominika Darowna ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Physicochemical Characteristics ◽  
Titanate Nanotubes ◽  
Fouling Resistance ◽  
Ultrafiltration Membranes

Influence of Ag/titanate nanotubes on physicochemical, antifouling and antimicrobial properties of mixed‐matrix polyethersulfone ultrafiltration membranes

2019 ◽  
Vol 94 (8) ◽  
pp. 2497-2511 ◽  
Author(s):  
Sylwia Mozia ◽  
Paulina Sienkiewicz ◽  
Kacper Szymański ◽  
Michał Zgrzebnicki ◽  
Dominika Darowna ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Titanate Nanotubes ◽  
Mixed Matrix ◽  
Ultrafiltration Membranes

scholarly journals Effect of graphene oxide (GO) and polyvinylpyrollidone (PVP) additives on the hydrophilicity of composite polyethersulfone (PES) membrane

2019 ◽  
Vol 15 (3) ◽  
pp. 361-366
Author(s):  
Nurul Fattin Diana Junaidi ◽  
Nur Hidayati Othman ◽  
Munawar Zaman Shahruddin ◽  
Nur Hashimah Alias ◽  
Woe Jye Lau ◽  
...  
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Pure Water ◽  
Water Flux ◽  
Composite Membranes ◽  
Premature Failure ◽  
Casting Solution ◽  
Solution Preparation ◽  
Pure Water Flux ◽  
Pes Membrane

Membrane based separation system is considered as a promising technology to purify water, owing to its simplicity and efficiency in operation. However, the application is limited by membrane fouling, which can lead to the declination of water flux and premature failure of membrane. The fouling can be controlled through membrane surface modification by blending hydrophilic materials during the casting solution preparation. Polyethersulfone (PES) membrane is naturally hydrophobic due to lack of oxygen functional group, which limits its application in the filtration of water. Therefore, modification of PES-based membranes is required. In this work, modification of the PES membrane was carried out by incorporating carbon-based nanomaterials (graphene oxide (GO)) and a well-known organic polymer (polyvinylpyrrolidone (PVP)). The effect of each additive toward the hydrophilicity of composite PES membrane was then investigated. GO was synthesized using modified Hummers method due to its simpler and shorter process. Each additive was added during the casting solution preparation and the amount added was varied from 0.5 to 1.0 wt%. The resultant composite PES membranes were characterized using XRD, FTIR and TGA prior to hydrophilicity and pure water flux (PWF) measurement. It was observed that the additives (PVP and GO) have significantly affected the membranes hydrophilicity, resulting in lower contact angle and higher pure water flux. The highest value of PWF (230 L/m2.h) with lowest contact angle (42 °) were observed for PES-1.0GOPVP membrane due to high amount of GO and PVP. Improved PWF performance of composite PES-1.0GOPVP membrane was attributed to the better dispersibility of the PVP and GO and increased surface hydrophilicity of the modified composite membranes. This study indicated that PVP and GO are effective modifiers to enhance the performance of PES membrane

Antimicrobial properties of tannin extracts as animal feed

2019 ◽  
Author(s):  
S Štumpf ◽  
G Hostnik ◽  
M Leitgeb ◽  
M Primožič ◽  
U Bren
Keyword(s):  
Animal Feed ◽  
Antimicrobial Properties

Synthesis and antimicrobial properties of oligomeric silsesquioxanes containing quaternized nitrogen atoms and hydroxyl groups in organic shell

2017 ◽  
Vol 39 (3) ◽  
pp. 188-194
Author(s):  
M.A. Gumenna ◽  
◽  
N.S. Klimenko ◽  
A.V. Stryutsky ◽  
D.M. Hodyna ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Hydroxyl Groups ◽  
Organic Shell

Disinfection of Fruits with Activated Water

2019 ◽  
Vol 10 ◽  
pp. 1864-1872
Author(s):  
Prof. Teodora P. Popova
Keyword(s):  
Antimicrobial Activity ◽  
Aqueous Solutions ◽  
Antimicrobial Properties ◽  
The Other ◽  
Gram Negative Bacteria ◽  
High Antimicrobial Activity ◽  
Gram Negative ◽  
E Coli ◽  
Number Of Microorganisms ◽  
Lower Effect

The effect of ionized aqueous solutions (anolytes and catholyte) in the processing of fruits (cherries, morellos, and strawberries) for decontamination has been tested. Freshly prepared analytes and catholyte without the addition of salts were used, as well as stored for 7 months anolytes, prepared with 0.5% NaCl and a combination of 0.5% NaCl and 0.5% Na2CO3. The anolyte prepared with a combination of 0.5% NaCl and 0.5% Na2CO3, as well as the anolyte obtained with 0.5% NaCl, exhibit high antimicrobial activity against the surface microflora of strawberries, cherries, and sour cherries. They inactivate E. coli for 15 minutes. The other species of the fam. Enterobacteriaceae were also affected to the maximum extent, as is the total number of microorganisms, especially in cherries and sour cherries. Even stored for 7 months, they largely retain their antimicrobial properties. Anolyte and catholyte, obtained without the addition of salts, showed a lower effect on the total number of microorganisms, but had a significant effect on Gram-negative bacteria, and especially with regard to the sanitary indicative E. coli.

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