Studies on the Electrochemical Characterization of Cellulose Acetate and Dowex-50 Membranes for Uni-Univalent Electrolytes in Aqueous Solutions

Singh, Kehar; Tiwari, Avinash

doi:10.1006/jcis.1998.5922

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…The membrane potential was measured as a function of the salt concentration for the system mentiond elsewhere (Singh K Tiwari A K 1999;Magnar O et al 1992).The potential / conductance-time measuring cell is illustrated in Figure 1 and was made of glass. Each compartment of the system was filled with aqueous electrolyte solution of different concentrations.…”

Section: Membrane Potential Measurementmentioning

confidence: 99%

“…Membrane processes are currently being studied for numerous applications of practical interest (Singh K and Tiwari A K 1999;Tiwari AK and Ahmad S 2006).Comixing is effective methods for modification in membrane activity (Tiwari AK and Ahmad S 2006). To examine it, cellulose acetate butyrate (CAB) and permutit were mixed and their characteristic properties were determined on the basis of membrane potential and conductance-time studies.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Characterization of Cellulose Acetate Butyrate-Prmutit Composite Membrane in Aqueous Uni-Uni Valent Electrolyte Solutions

Tiwari

Sonkar

Tiwari

2015

Int J Appl Sci Biotechnol

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Co-mixed cellulose acetate butyrate and permutit in a definite composition was prepared and coded as MRS-2. The membrane potential was measured with uni-uni valent electrolyte, NaCl solutions using saturated calomel electrodes (SCEs).The effective fixed charge density of the membrane was determined by TMS method and it showed dependence on the porosity, charge on the membrane matrix, charge and size of permeating ions. Other important electrochemical parameters were calculated. Conductance-time data were generated for the kinetic study of the permeating ions in terms of membrane permeability, flow and flux parameters. Donnan membrane equilibrium condition was examined. Membrane adsorbability showed concave dependence with external electrolyte solution and convex type dependence was showed by swelling and conductance parameters. This membrane had no characteristic of anomalous osmosis, indicates that there is no water flooding will take place during membrane operation.Int J Appl Sci Biotechnol, Vol 3(2): 337-341 DOI: http://dx.doi.org/10.3126/ijasbt.v3i2.12748

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Section: Membrane Potential Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Characterization of Cellulose Acetate Butyrate-Prmutit Composite Membrane in Aqueous Uni-Uni Valent Electrolyte Solutions

Tiwari

Sonkar

Tiwari

2015

Int J Appl Sci Biotechnol

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“…The magnitude of the membrane potential depends on the electrical characteristics of the membrane in addition to the nature and concentration of the electrolyte solution used [22]. Membrane potential data obtained using CEM and AEM and their different composite membranes in NaCl solutions (mean concentration (C s ) ranging between 0.055 to 0.165 M; C 1 /C 2 = 10 and C/C s = 1.6) are present in Table 4 for CEM and their composite membranes and in Table 5 for AEM and their composite membranes.…”

Section: Membrane Potential (E M ) Studies In Strong Electrolytementioning

confidence: 99%

Development of urethane acrylate composite ion-exchange membranes and their electrochemical characterization

Nagarale

Shahi

Schubert

et al. 2004

Journal of Colloid and Interface Science

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“…the removal of dissolved impurities in water by membrane process 12 . Membrane activity can be modified at a desired level by co-mixing of materials at the beginning step of membrane preparation 13,14 . With the help of this method, varying degree of hydrophilicity in the membrane property can be achieved which may be helpful to minimize the fouling characteristic.…”

Section: Introductionmentioning

confidence: 99%

Ion Permeation Study on Cellulose Acetate/ Chitosan Membrane With Multivalent Aqueous Electrolyte Solution

Tiwari¹,

Nath²

2019

RJC

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The present study CA/chitosan blend membrane was prepared by solvent vaporization method. The morphology of membrane was studied using Scanning Electron Microscopy (SEM) and the thermal stability using Thermo Gravimetric Analysis (TGA); and the physicochemical properties such as water content, kinetic of membrane flux, permeability and flow were investigated. Parameters on which membrane selectivity depends, are also discussed. It has also been explored the effect of electrolyte solution on ion transport properties of cellulose acetate /chitosan membrane under a concentration gradient. Water uptake in the absence and presence of electrolyte were carried out. The thermal stability of Cellulose acetate /Chitosan blends membrane to provide information regarding weight loss of the prepared membrane represent some significant steps i.e. water loss from membrane phase, followed by degradation process. First weight loss occurred at 80 to 130 0 C which conform evaporation of residual water from the membrane. The second degradation stage was noticed around 360.36 0 C, which are due to amino and hydroxyl groups. The work has been done with the object to investigate the transport properties of cellulose acetate /chitosan synthetic membrane, conducted under a concentration gradient .More ever, the water uptake and conductance experiment were carried out to investigate the effect of those electrolyte solutions. As time increases, the density of membrane functional groups increases and approaches to narrow proximity to each other. Membrane water retention capacity varies electrolyte to electrolyte. In present case it is 83.6 % for 0.01 M, NaCl; 50.9 % for 0.01M, MgCl2 and 44.0 % for 0.01M BaCl2.

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Studies on the Electrochemical Characterization of Cellulose Acetate and Dowex-50 Membranes for Uni-Univalent Electrolytes in Aqueous Solutions

Cited by 21 publications

References 18 publications

Electrochemical Characterization of Cellulose Acetate Butyrate-Prmutit Composite Membrane in Aqueous Uni-Uni Valent Electrolyte Solutions

Electrochemical Characterization of Cellulose Acetate Butyrate-Prmutit Composite Membrane in Aqueous Uni-Uni Valent Electrolyte Solutions

Development of urethane acrylate composite ion-exchange membranes and their electrochemical characterization

Ion Permeation Study on Cellulose Acetate/ Chitosan Membrane With Multivalent Aqueous Electrolyte Solution

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