Correlation between the pore resistance and water flux of the cellulose acetate membrane

2017 ◽  
Vol 3 (6) ◽  
pp. 1037-1041 ◽  
Author(s):  
Cheng Yin ◽  
Shuai Wang ◽  
Yongjing Zhang ◽  
Zhe Chen ◽  
Zhidong Lin ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
Cellulose Acetate ◽  
Inverse Relationship ◽  
Water Flux ◽  
Cellulose Acetate Membrane

An inverse relationship between the pore resistance and water flux was found by theoretical calculation and confirmed by the corresponding experiment.

Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

1990 ◽  
Vol 55 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Klaus Richau
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Water Flux ◽  
Cellulose Acetate Membrane ◽  
Structure Parameters ◽  
Dc Electrical Conductivity ◽  
Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

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.

Alginate fouling reduction of functionalized carbon nanotube blended cellulose acetate membrane in forward osmosis

Chemosphere ◽  
2015 ◽  
Vol 136 ◽  
pp. 204-210 ◽  
Author(s):  
Hyeon-gyu Choi ◽  
Moon Son ◽  
SangHyeon Yoon ◽  
Evrim Celik ◽  
Seoktae Kang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cellulose Acetate ◽  
Forward Osmosis ◽  
Cellulose Acetate Membrane ◽  
Functionalized Carbon Nanotube ◽  
Fouling Reduction

scholarly journals Examination of the molecular diversity of ?1 antitrypsin in urine: Deficit of an ?1 globulin fraction on cellulose acetate membrane electrophoresis

2005 ◽  
Vol 19 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Ryoko Machii ◽  
Minoru Sakatume ◽  
Ryo Kubota ◽  
Shizuko Kobayashi ◽  
Fumitake Gejyo ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Molecular Diversity ◽  
Cellulose Acetate Membrane ◽  
Globulin Fraction

Improvement of continuous-wave terahertz imaging system for cellulose acetate membrane electrophoresis

2012 ◽  
Vol 7 (S1) ◽  
pp. S126-S131 ◽  
Author(s):  
Hongbing Zhang ◽  
Kazutaka Mitobe ◽  
Mahmudul Kabir ◽  
Masafumi Suzuki ◽  
Yoko Mitobe ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Continuous Wave ◽  
Imaging System ◽  
Terahertz Imaging ◽  
Cellulose Acetate Membrane

scholarly journals Water Permeability Increase in Ultrafiltration Cellulose Acetate Membrane Containing Silver Nanoparticles

2018 ◽  
Vol 20 (suppl 2) ◽  
pp. 887-891 ◽  
Author(s):  
Bruna da Silva Pereira ◽  
Lívia Oliveira Ruiz Moreti ◽  
Marcela Fernandes Silva ◽  
Rosangela Bergamasco ◽  
Angélica de Fátima Bortolato Piccioli ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Cellulose Acetate ◽  
Water Permeability ◽  
Cellulose Acetate Membrane ◽  
Permeability Increase
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