scholarly journals Cellulose Acetate Membranes characters Due To Additions Additive Monosodium Glutamate (MSG)

2013 ◽  
Vol 14 (1) ◽  
pp. 33 ◽  
Author(s):  
Dwi Indarti ◽  
I Nyoman Adi Winata ◽  
Heny Yunita Novianti
Keyword(s):  
Membrane Permeability ◽  
Cellulose Acetate ◽  
Phase Inversion ◽  
Monosodium Glutamate ◽  
Water Flux ◽  
Membrane Preparation ◽  
Permeability Coefficients ◽  
Phase Inversion Technique ◽  
Cellulose Acetate Membranes ◽  
Membrane Density

This study purposed to determine the effect of MSG on the character of cellulose acetate membranes. This membrane preparation using phase inversion technique. The results showed that the higher the concentration of MSG, which is the character of membrane permeability coefficients and higher water flux, whereas for the character of the membrane density test and 100-200 kDa dextran rejection further down. To test the FTIR proved that there are no additives or solvents are trapped in a membrane. Keywords : Cellulose Acetate, phase inversion, MSG, FTIR  

scholarly journals Effect of Addition of Monosodium Glutamate (MSG) on Coagulation Basin to Characteristics of Cellulose Acetate Membranes

2017 ◽  
Vol 17 (2) ◽  
pp. 83
Author(s):  
Siti Rofiqoh ◽  
Dwi Indarti ◽  
Bambang Piluharto
Keyword(s):  
Membrane Permeability ◽  
Cellulose Acetate ◽  
Phase Inversion ◽  
Monosodium Glutamate ◽  
Water Flux ◽  
Permeability Coefficients ◽  
Inversion Technique ◽  
Morphology Analysis ◽  
Phase Inversion Technique ◽  
Cellulose Acetate Membranes

The aim of recearch is study the effect of MSG in coagulation basin on cellulose acetat membranes properties. It was preparated by phase inversion technique. As the result showed that the higher the concentration of MSG in coagulation basin, which is character of membrane permeability coefficients and lower water flux. Dextran rejection of 11, 40, 100-200, and 500 kDa increased. The morphology analysis has shown that sub layer membranes structure with 2% MSG addition more uniform than 0,5% MSG addition.Keywords: cellulose acetat, phase inversion, MSG, coagulation basin

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 Synthesis and Characterization of Novel Integral Asymmetric Monophasic Cellulose–Acetate/Silica/Titania and Cellulose–Acetate/Titania Membranes

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 195 ◽  
Author(s):  
Inês Peixoto ◽  
Mónica Faria ◽  
M. Clara Gonçalves
Keyword(s):  
Cellulose Acetate ◽  
Phase Inversion ◽  
Sol Gel ◽  
Asymmetric Structure ◽  
Hydraulic Permeability ◽  
Icp Oes ◽  
Phase Inversion Technique ◽  
In Series ◽  
Covalently Bound

Two series of novel integral asymmetric monophasic hybrid membranes, cellulose acetate/silica/titania (CA/SiO2/TiO2—series 1) and cellulose acetate/titania (CA/TiO2—series 2), were developed by the coupling of sol-gel technology and a modified version of the phase inversion technique. SEM micrographs confirmed the integral asymmetric structure of all membranes. ATR-FTIR and ICP-OES results showed that, for the membranes in series 1, TiO2 is covalently bound to SiO2, which, in turn, is covalently bound to CA, while for the membranes in series 2, TiO2 is directly and covalently bound to the CA matrix. Permeation experiments revealed that the permeation performance of the membranes in series 1 is unaffected by the introduction of TiO2. In contrast, the introduction of TiO2 in the series 2 membranes increased the hydraulic permeability by a factor of at least 2 when compared to the pristine CA membrane and that incremental additions of TiO2 further increased the Lp.

scholarly journals High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

Processes ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 1 ◽  
Author(s):  
Panggulu Utoro ◽  
Agung Sukoyo ◽  
Sandra Sandra ◽  
Nimatul Izza ◽  
Shinta Dewi ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
High Throughput ◽  
Water Flux ◽  
Antibacterial Properties ◽  
Mixed Matrix Membranes ◽  
Bacterial Cells ◽  
E Coli ◽  
Membrane Surfaces ◽  
Cellulose Acetate Membranes ◽  
Microfiltration Membranes

The effect of natural antibiotics Moringa oleifera seeds powder in cellulose acetate membranes as biofouling reducer agent was investigated. Mixed matrix membranes (MMM) were synthesized by adding 100 mesh M. oleifera seeds powder with variation of three concentrations (1 wt%, 2 wt%, and 3 wt%), into a mix polymer solution of CA (cellulose acetate) and two different solvents, i.e., DMF (dimethylformamide) and DMAc (dimethylacetamide). The synthesized membranes morphology was observed under scanning electron microscopy and from the images can be seen that the membranes made of DMAc formed rather large macrovoid as compared to DMF-based membranes. The microstructure affected the water flux through the membranes, in which the DMAc membranes provided a higher flux value and served as high-throughput microfiltration membranes. Antibacterial properties of MMM were tested using Escherichia coli adhesion onto membrane surfaces. The results showed that M. oleifera has been proven to eradicate E. coli activity on the membrane surfaces due to interaction between bacterial cells and phenolic compounds from M. oleifera, through absorption processes involving hydrogen bonds.

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