Parameters of Household Wastewater Treatment Using Composite Membranes with a Surface Layer of Cellulose Acetate

2021 ◽  
Vol 3 (6) ◽  
pp. 419-425
Author(s):  
D. D. Fazullin ◽  
G. V. Mavrin ◽  
V. O. Dryakhlov ◽  
L. I. Fazullina ◽  
I. G. Shaikhiev ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Surface Layer ◽  
Cellulose Acetate ◽  
Composite Membranes ◽  
Household Wastewater

Composite Membranes with Cellulose Acetate Surface Layer for Water Treatment

2021 ◽  
Vol 12 (5) ◽  
pp. 1229-1235
Author(s):  
D. D. Fazullin ◽  
L. I. Fazullina ◽  
G. V. Mavrin ◽  
I. G. Shaikhiev ◽  
V. O. Dryakhlov
Keyword(s):  
Surface Layer ◽  
Water Treatment ◽  
Cellulose Acetate ◽  
Composite Membranes

Composite Membranes with a Cellulose Acetate Working Layer on a Nylon Substrate

2021 ◽  
Vol 410 ◽  
pp. 662-667
Author(s):  
Dinar D. Fazullin
Keyword(s):  
Surface Layer ◽  
Cellulose Acetate ◽  
Human Life ◽  
Total Porosity ◽  
Composite Membranes ◽  
Specific Productivity ◽  
Ir Absorption ◽  
Treatment Processes ◽  
Ir Absorption Spectra ◽  
Wide Range

Membrane technologies are currently among the most demanded. This is evidenced by their variety and a wide range of membrane applications in the most topical areas of human life. This work proposes a simple and inexpensive method for producing composite membranes for ultrafiltration and nanofiltration with a surface layer of cellulose acetate for water purification and water treatment processes. A nylon microfiltration membrane was used as a membrane base. The surface layer was obtained by immersion in a solution of cellulose acetate in acetone. Composite membranes with different retention properties were obtained depending on the number of deposited layers. The resulting membranes were examined for total porosity, water absorption, cellulose acetate content, contact angle, and IR absorption spectra. The specific productivity of the obtained membranes with respect to distilled water was also established.

scholarly journals Supercritical Phase Inversion: A Powerful Tool for Generating Cellulose Acetate-AgNO3 Antimicrobial Membranes

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1560
Author(s):  
Lucia Baldino ◽  
Stefano Cardea ◽  
Ernesto Reverchon
Keyword(s):  
Cellulose Acetate ◽  
Phase Inversion ◽  
Active Agent ◽  
Composite Membranes ◽  
Time Interval ◽  
Membrane Pore ◽  
Supercritical Phase ◽  
Silver Nitrate Concentration ◽  
Membrane Pore Size ◽  
Silver Release

Antimicrobial composite membranes, formed by cellulose acetate loaded with AgNO3 particles, were produced by supercritical phase inversion. Different cellulose acetate concentrations were tested (15%, 20%, 30%(w/w)), whereas the active agent (i.e., silver nitrate) concentration was fixed at 0.1%(w/w) with respect to the quantity of polymer used. To determine the influence of the process parameters on membranes morphology, the pressure and temperature were varied from 150 to 250 bar and from 55 to 35 °C, respectively. In all cases, regularly porous membranes were produced with a uniform AgNO3 distribution in the membrane matrix. Silver release rate depended on membrane pore size, covering a time interval from 8 to 75 h.

Effective composite membranes of cellulose acetate for removal of benzophenone-3

2019 ◽  
Vol 30 ◽  
pp. 100419 ◽  
Author(s):  
B.J. Rajesha ◽  
V. Halali Vishaka ◽  
Geetha R. Balakrishna ◽  
Mahesh Padaki ◽  
N.A.M. Nazri
Keyword(s):  
Cellulose Acetate ◽  
Composite Membranes
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