Effect of Triton X100 on Tetramethylammonium Ion Transport Kinetics Through the Water/Nitrobenzene Interface

1995 ◽  
Vol 60 (9) ◽  
pp. 1435-1447 ◽  
Author(s):  
Wojciech S. Wawrzynczak ◽  
Zbigniew Figaszewski
Keyword(s):  
Cyclic Voltammetry ◽  
Adsorption Isotherm ◽  
Interfacial Tension ◽  
Ion Transport ◽  
Ion Transfer ◽  
Triton X100 ◽  
Strong Adsorption ◽  
Adsorption Data ◽  
Best Fitting ◽  
Isotherm Equations

The tetramethylammonium cation (TMA+) transport through the water/nitrobenzene interface modified by the Triton X100 (TX100) adsorption has been investigated using cyclic voltammetry and interfacial tension measurements. Obtained results indicate the strong adsorption of TX100 and its responsible effect on the TMA+ ion transfer. Adsorption data have been fitted to six theoretical adsorption isotherm equations with the best fitting for the Frumkin isotherm. The mechanism of facilitating effect of TX100 on the TMA+ transfer has been proposed. The suggested mechanism is different from that developed by other authors.

scholarly journals Adsorption of Biologically Active Compounds from Aqueous Solutions on to Commercial Unmodified Activated Carbons. Part III. Theoretical Description of Paracetamol Adsorption Data at Neutral pH

2002 ◽  
Vol 20 (1) ◽  
pp. 63-81 ◽  
Author(s):  
Artur P. Terzyk
Keyword(s):  
Adsorption Isotherm ◽  
Activated Carbons ◽  
Theoretical Data ◽  
Theoretical Description ◽  
Biologically Active ◽  
Carbon Surface ◽  
Carbonyl Groups ◽  
Average Correlation ◽  
Adsorption Data ◽  
Isotherm Equations

A theoretical description of recently published paracetamol adsorption data on a series of non-modified commercial activated carbons is presented. Nineteen of the most widespread adsorption isotherm equations are analysed and the resulting maximum adsorption values compared. The equations proposed by Weber and Vliet, by O'Brien and Myers as well as by Dubinin and Astakhov led to the highest values of the average correlation coefficient describing the fit of the theoretical data to those obtained experimentally. On the basis of the results obtained as well as those published previously, the importance of carbon surface basic groups and carbonyl groups in the mechanism of paracetamol adsorption is emphasised.

scholarly journals Adsorption of Hydrogen Sulphide on the Zeolite type A Synthezied from Iraqi Kaoline

2013 ◽  
Vol 10 (3) ◽  
pp. 1023-1033 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Adsorption Process ◽  
Adsorption Properties ◽  
Zeolite A ◽  
Exchange Method ◽  
Adsorption Data ◽  
H2s Adsorption ◽  
Zeolite Type ◽  
Ion Exchange Method ◽  
Isotherm Equations ◽  
Static Form

Three types of zeolite A were prepared from Iraqi kaoline which are 3A, 4A and 5A by ion exchange method .They were characterized by XRD and atomic absorption techniques .They were used as adsorbents to examine their applicability for H2S adsorption .The adsorption process was performed in a static form and constant volume system which constructed from stainless steel .The effect of zeolite type and temperature on the adsorption properties of H2S at -5 , 25 and 55 oC was studied .The zeolite type 5A has the highest adsorption value (79.384 µmol/g ) and the three types may be arranged in a sequence toward H2S adsorption as 5 A> 4A>3A .The amount of H2S adsorbed increased as temperature decreased from 55 to -5 for all samples. Langmuir , Frendlich and Toth isotherm equations model were applied for the adsorption data in order to determine the affinity and the heterogeneity of the three adsorbents. The heterogeneity parameters of the model equation applied indicated that 5A sample was more heterogeneous compared to other zeolite types.

Adsorption of chromium (VI) from aqueous solutions on activated carbon

1994 ◽  
Vol 30 (9) ◽  
pp. 191-197 ◽  
Author(s):  
R. Leyva Ramos ◽  
A. Juarez Martinez ◽  
R. M. Guerrero Coronado
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Maximum Adsorption Capacity ◽  
Experimental Adsorption ◽  
Ph Values ◽  
Chromium Vi ◽  
Adsorption Data

The adsorption isotherm of chromium (VI) on activated carbon was obtained in a batch adsorber. The experimental adsorption data were fitted reasonably well to the Freundlich isotherm. The effect of pH on the adsorption isotherm was investigated at pH values of 4, 6, 7, 8, 10 and 12. It was found that at pH < 6, Cr(VI) was adsorbed and reduced to Cr(III) by the catalytic action of the carbon and that at pH ≥ 12, Cr(VI) was not adsorbed on activated carbon. Maximum adsorption capacity was observed at pH 6 and the adsorption capacity was diminished about 17 times by increasing the pH from 6 to 10. The pH effect was attributed to the different complexes that Cr(VI) can form in aqueous solution. The adsorption isotherm was also affected by the temperature since the adsorption capacity was increased by raising the temperature from 25 to 40°C. It was concluded that Cr(VI) was adsorbed significantly on activated carbon at pH 6 and that the adsorption capacity was greatly dependent upon pH.

Combination of Electrochemical Impedance Spectroscopy and Cyclic Voltammetry to Investigate Oxygen Ion Transport in YSZ Electrolyte of SOFC

2019 ◽  
Vol 7 (1) ◽  
pp. 1293-1298
Author(s):  
Warunya Boonjob ◽  
Nitinai -. Punbusayakul ◽  
Ron -. Beckett ◽  
Manop -. Masomtub ◽  
Kitsadate -. Wongtidad ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Ion Transport ◽  
Electrochemical Impedance ◽  
Oxygen Ion ◽  
Ysz Electrolyte

Investigation of the pyridinium ion transfer across the water/nitrobenzene interface by means of cyclic voltammetry and ac-impedance techniques

2002 ◽  
Vol 47 (13-14) ◽  
pp. 2209-2214 ◽  
Author(s):  
H. Heli ◽  
M.G. Mahjani ◽  
M. Jafarian ◽  
F. Gobal ◽  
M.F. Mousavi ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Ac Impedance ◽  
Ion Transfer ◽  
Pyridinium Ion

Investigation of the ion transfer across the water-nitrobenzene interface by ac cyclic voltammetry

1983 ◽  
Vol 149 (1-2) ◽  
pp. 179-183 ◽  
Author(s):  
B. Hundhammer ◽  
Theodros Solomon ◽  
Hailemichael Alemu
Keyword(s):  
Cyclic Voltammetry ◽  
Ion Transfer

Kinetics of Triton-X100 Transfer Across the Water/Dodecane Interface: Analysis of the Interfacial Tension Variation

2012 ◽  
Vol 116 (24) ◽  
pp. 13152-13160 ◽  
Author(s):  
Pierre-Marie Gassin ◽  
Gaelle Martin-Gassin ◽  
Daniel Meyer ◽  
Jean-François Dufrêche ◽  
Olivier Diat
Keyword(s):  
Interfacial Tension ◽  
Interface Analysis ◽  
Triton X100 ◽  
Kinetics Of
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