Optimal synthesis of high fouling-resistant PVC-based ultrafiltration membranes with tunable surface pore size distribution and ultralow water contact angle for the treatment of oily wastewater

2021 ◽  
Vol 257 ◽  
pp. 117829
Author(s):  
Tausif Ahmad ◽  
Chandan Guria ◽  
Ajay Mandal
Keyword(s):  
Contact Angle ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Water Contact Angle ◽  
Optimal Synthesis ◽  
Oily Wastewater ◽  
Ultrafiltration Membranes ◽  
Water Contact

scholarly journals Filtration performance and pore size distribution of hypochlorite aged PES/PVP ultrafiltration membranes

2015 ◽  
Vol 474 ◽  
pp. 175-186 ◽  
Author(s):  
Bastien Pellegrin ◽  
Fernanda Mezzari ◽  
Yamina Hanafi ◽  
Anthony Szymczyk ◽  
Jean-Christophe Remigy ◽  
...  
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Ultrafiltration Membranes ◽  
Filtration Performance

scholarly journals Fabrication of PES/PVP Water Filtration Membranes Using Cyrene®, a Safer Bio-Based Polar Aprotic Solvent

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Roxana A. Milescu ◽  
C. Robert McElroy ◽  
Thomas J. Farmer ◽  
Paul M. Williams ◽  
Matthew J. Walters ◽  
...  
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Water Filtration ◽  
Solubility Parameters ◽  
Coagulation Bath ◽  
Additive Concentration ◽  
Sem Images ◽  
Water Contact ◽  
Water Permeation

A more sustainable dialysis and water filtration membrane has been developed, by using the new, safer, bio-based solvent Cyrene® in place of N-methyl pyrrolidinone (NMP). The effects of solvent choice, solvent evaporation time, the temperature of casting gel, and coagulation bath together with the additive concentration on porosity and pore size distribution were studied. The results, combined with infrared spectra, SEM images, porosity results, water contact angle (WCA), and water permeation, confirm that Cyrene® is better media to produce polyethersulfone (PES) membranes. New methods, Mercury Intrusion Porosimetry (MIP) and NMR-based pore structure model, were applied to estimate the porosity and pore size distribution of the new membranes produced for the first time with Cyrene® and PVP as additive. Hansen Solubility Parameters in Practice (HSPiP) was used to predict polymer-solvent interactions. The use of Cyrene® resulted in reduced polyvinylpyrrolidone (PVP) loading than required when using NMP and gave materials with larger pores and overall porosity. Two different conditions of casting gel were applied in this study: a hot (70°C) and cold gel (17°C) were cast to obtain membranes with different morphologies and water filtration behaviours.

Relating the pore size distribution of ultrafiltration membranes to dextran rejection

2009 ◽  
Vol 340 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
S. Ranil Wickramasinghe ◽  
Shane E. Bower ◽  
Zhen Chen ◽  
Abhik Mukherjee ◽  
Scott M. Husson
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Ultrafiltration Membranes

Modelling of the pore size distribution of ultrafiltration membranes

1985 ◽  
Vol 22 (1) ◽  
pp. 61-76 ◽  
Author(s):  
John Kassotis ◽  
Joseph Shmidt ◽  
Leonard T. Hodgins ◽  
Harry P. Gregor
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Ultrafiltration Membranes

Effect of pore size distribution of ultrafiltration membranes on virus rejection in crossflow conditions

1994 ◽  
Vol 30 (9) ◽  
pp. 199-208 ◽  
Author(s):  
Taro Urase ◽  
Kazuo Yamamoto ◽  
Shinichiro Ohgaki
Keyword(s):  
Drinking Water ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Wastewater Reuse ◽  
Distribution Model ◽  
Water Supplies ◽  
Ultrafiltration Membranes ◽  
Molecular Weight Cutoff ◽  
Log Normal

The ultrafiltration process is successfully used in wastewater reuse systems. It will also be used widely in drinking water supplies. In wastewater reuse and for safer drinking water supplies the potential for virus rejection by membrane processes is advantageous. Rejection of viruses was examined experimentally by using coliphage Qβ as a tracer. Several types of ultrafiltration membranes with molecular weight cutoff size of 20,000-40,000 were tested. All of these membranes leaked phages to some extent, contrary to the expectation from nominal cutoff size. Penetration of virus through ultrafiltration membranes was theoretically examined by taking pore size distribution of the membranes into account. Modified pore theory and a log-normal pore size distribution model gave an unsatisfactory explanation of the results. The presence of abnormally large pores which are not included in the main distribution was indicated.

Sign in / Sign up

Export Citation Format

Share Document