High performance polyethersulfone microfiltration membranes having high flux and stable hydrophilic property

2009 ◽  
Vol 342 (1-2) ◽  
pp. 153-164 ◽  
Author(s):  
Heru Susanto ◽  
Nico Stahra ◽  
Mathias Ulbricht
Keyword(s):  
High Performance ◽  
High Flux ◽  
Hydrophilic Property ◽  
Microfiltration Membranes

scholarly journals Fabrication and Optimization of a Lipase Immobilized Enzymatic Membrane Bioreactor based on Polysulfone Gradient-Pore Hollow Fiber Membrane

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 495 ◽  
Author(s):  
Peng-Cheng Chen ◽  
Zhen Ma ◽  
Xue-Yan Zhu ◽  
Da-Jing Chen ◽  
Xiao-Jun Huang
Keyword(s):  
Hollow Fiber ◽  
High Performance ◽  
Hollow Fiber Membrane ◽  
Candida Rugosa ◽  
Operational Parameters ◽  
Membrane Pore ◽  
Microfiltration Membranes ◽  
Glycerol Triacetate ◽  
Operation Pressure ◽  
Enzymatic Membrane

Enzymatic membrane bioreactors (EMBRs) possess the characteristic of combining catalysis with separation, and therefore have promising application potentials. In order to achieve a high-performance EMBR, membrane property, as well as operating parameters, should give special cause for concerns. In this work, an EMBR based on hollow fiber polysulfone microfiltration membranes with radial gradient pore structure was fabricated and enzyme immobilization was achieved through pressure-driven filtration. Lipase from Candida rugosa was used for immobilization and EMBR performance was studied with the enzymatic hydrolysis of glycerol triacetate as a model reaction. The influences of membrane pore diameter, substrate feed direction as well as operational parameters of operation pressure, substrate concentration, and temperature on the EMBR activity were investigated with the production of hydrolysates kinetically fitted. The complete EMBR system showed the highest activity of 1.07 × 104 U⋅g−1. The results in this work indicate future efforts for improvement in EMBR.

High flux microfiltration membranes with silver nanoparticles for water disinfection

2015 ◽  
Vol 56 (13) ◽  
pp. 3590-3598 ◽  
Author(s):  
Aline Marques Ferreira ◽  
Érica Barbosa Roque ◽  
Fabiana Valéria da Fonseca ◽  
Cristiano Piacsek Borges
Keyword(s):  
Silver Nanoparticles ◽  
Water Disinfection ◽  
High Flux ◽  
Microfiltration Membranes

Tubular PAN/CNC Thin Film Nanocomposite (TFN) Pressure Retarded Osmosis (PRO) Membrane: Fabrication and Preliminary Evaluation in Desalination Process

2021 ◽  
Author(s):  
Mehmet Emin PASAOGLU ◽  
Ismail KOYUNCU
Keyword(s):  
High Performance ◽  
Water Flux ◽  
Mechanical Analysis ◽  
Salt Flux ◽  
Feed Water ◽  
Preliminary Evaluation ◽  
High Flux ◽  
Pressure Retarded Osmosis ◽  
Membrane Fabrication ◽  
High Rejection

Abstract The aim of this work is to fabricate tubular nanocellulose-based nanofiber pressure retarded osmosis (PRO) by electrospinning. The PRO process requires high performance, high flux, high rejection and resistant membranes under harsh conditions. Because conventional phase-inversion membranes are not sufficient to perform the required water flux. Because of this reason, alternative membrane fabrication methods need to be develop. Recently, lots of studies are carried out to fabricate strong enough nanofiber pressure retarded osmosis membranes which are resistant higher pressure pressure while providing high flux and high rejection rates. In this study, cellulose nanocrystal (CNC) added PAN nanocomposite nanofiber PRO membranes successfully fabricated by tailor made electrospinning equipment. According to the Scanning Electron Microscopy (SEM), FT-IR, Dynamic Mechanical Analysis, Porometer and Contact Angle analysis results, it is concluded that PAN and CNC provided a complete mixture and the addition of CNC increased the mechanical strength in the PAN membranes which is the crucial phenomena in PRO applications.In this study, the newly fabricated membrane achieves a higher PRO water flux of 405.38 LMH with using a 1 M NaCl and a DI as feed water. The corresponding salt flux is found as 2.10 gMH which is higher than our previous study (Pasaoglu et al., 2020). The selectivity of the reversed flux represented by the ratio of the water flow to the reversed salt flux (Jw/ Js) was able to be kept as high as 193.03 L/g for PRO operation.As far as we know, the performance of the work developed membrane in this study has shawn better performance than all PRO membranes reported in the literature previously.

Influence of Dialysis Membranes on the Convective Transport of Middle Molecules

1986 ◽  
Vol 9 (6) ◽  
pp. 421-426 ◽  
Author(s):  
A.L. M. de Francisco ◽  
J. Gordillo ◽  
J.G. Cotorruelo ◽  
L. Ruiz ◽  
M. Gonzalez ◽  
...  
Keyword(s):  
High Performance ◽  
Convective Transport ◽  
Maintenance Hemodialysis ◽  
Gel Chromatography ◽  
High Flux ◽  
Solute Transfer ◽  
Effective Form ◽  
Middle Molecules ◽  
Dialysis Membranes ◽  
Chromatographic Profiles

Ultrafiltrates from 10 patients in chronic maintenance hemodialysis (7 males and 3 females) were obtained simultaneously using three different membranes: cuprophan, polyacrilonitrile and polysulfone. Middle molecules (MM) chromatographic profiles and total MM amount were determined by gel chromatography and high performance liquid chromatography. The convective transport of MM was similar and not membrane related. Hemofiltration, a predominantly convective solute transfer procedure using high flux membranes such as polyacrilonitrile and polysulfone, in which large amounts of fluids have to be ultrafiltered, is an effective form of MM removal.

Conductive 3D networks in a 2D layer for high performance ultrafiltration membrane with high flux-retention and robust cyclic stability

2021 ◽  
pp. 119781
Author(s):  
Qi Wang ◽  
Yuanyou Peng ◽  
Xiwei Ji ◽  
Mohammed Kamal Hadi ◽  
Shaohu Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Ultrafiltration Membrane ◽  
Cyclic Stability ◽  
High Flux ◽  
3D Networks

scholarly journals High-Flux, Porous and Homogeneous PVDF/ Cellulose Microfiltration Membranes

2021 ◽  
Author(s):  
Lucca Malucelli ◽  
Inbal Ozeri ◽  
Mailson Matos ◽  
Washington Magalhães ◽  
Marco Aurélio Carvalho Filho ◽  
...  
Keyword(s):  
Water Treatment ◽  
Membrane Filtration ◽  
Water Flux ◽  
High Water ◽  
Low Complexity ◽  
Production Method ◽  
High Flux ◽  
Cellulose Dissolution ◽  
Microfiltration Membranes ◽  
Cellulose Membranes

Abstract Low hydrophilicity of membranes is probably the biggest concern in membrane filtration since it increases the costs for water treatment. Conversely, application of hydrophilic biopolymers (such as cellulose) is limited because of its complex and crystalline structure. Enabling the widely use of the most common biopolymer in nature is crucial to improve the performance of water treatment, especially in terms of membrane sustainability. Here, we study the effect of cellulose dissolution in the synthesis of homogeneous PVDF/cellulose membranes. Although only partial dissolution was achieved for studied samples, adding cellulose to the membranes greatly improved their water flux. Besides, the porous structure obtained after partial solvent removal indicates the WF (and consequently the pore size) may be tailored according to the membrane production method. Therefore, the homogeneous cellulose microfiltration membranes studied here may have potential for water treatment considering their high-water flux and low complexity to produce.

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