Note Concerning the Monolayer Capacity

1974 ◽  
Vol 52 (24) ◽  
pp. 2510-2512
Author(s):  
P. Mendoza ◽  
J. M. Rodríguez ◽  
L. Alzamora
Keyword(s):  
Carbon Dioxide ◽  
Adsorption Isotherms ◽  
Spreading Pressure ◽  
Monolayer Capacity

When the derivative of spreading pressure with respect to adsorbed volume is obtained for the adsorption isotherms of nitrogen, oxygen, and carbon dioxide on ZnO between 75.6 and 208.8 K, a maximum is found for the capacity of the monolayer.

scholarly journals Sorption Properties of the Filter Material MS in Relation to Copper(II) Ions

2020 ◽  
Author(s):  
Oleg D. Linnikov ◽  
Irina V. Rodina
Keyword(s):  
Adsorption Capacity ◽  
Sodium Sulfate ◽  
Filter Material ◽  
Model Solution ◽  
Langmuir Equation ◽  
Sorption Properties ◽  
Simultaneous Action ◽  
Monolayer Capacity ◽  
Two Factors

The sorption of copper(II) ions by the mineral filter material MS was studied. The study was carried out on a model solution of copper(II) sulfate containing an additional 400 mg/dm3 of sodium sulfate. It demonstrates that the sorption properties of MS are due to the simultaneous action of two factors. The first is associated with an increase in the pH of the solution being purified when the MS material is introduced into it, which leads to the precipitation of copper(II) ions from the solution in the form of the corresponding hydroxide. The second is the ability of the MS to remove copper(II) ions from the solution by the mechanism of adsorption described by the Langmuir equation. It was found that with an increase in the pH of the solution from 4 to 6.7, the adsorption of copper(II) ions on the surface of the MS increases (ranges of pH<4 and pH>6.7 have not been studied). The found values of the MS monolayer capacity with respect to copper(II) ions turned out to be comparable in magnitude with similar values for some other mineral sorbents. Keywords: copper(II) ions, sorption, Langmuir equation, adsorption capacity

scholarly journals The Influence of Binding Material on Porous Structure of Shaped Hopcalite

2008 ◽  
Vol 3 (1) ◽  
pp. 67-69
Author(s):  
N.K. Kulikov ◽  
S.G. Kireev ◽  
A.O. Shevchenko ◽  
V.M. Mukhin ◽  
S.N. Tkachenko ◽  
...  
Keyword(s):  
Water Molecule ◽  
Porous Structure ◽  
Bentonite Clay ◽  
Mesoporous Structure ◽  
Monolayer Capacity ◽  
Bentonitic Clay ◽  
Binding Material ◽  
Water Vapors ◽  
Bet Model ◽  
Adsorption Of Water

The authors have investigated the equilibrated adsorption of water vapors on GFG hopcalite, which was obtained using the extrusion shaping method, with bentonite clay as the binding compound. In the frames of the BET model, the values of the monolayer capacity and the size of medium area occupied by the water molecule in the filled monolayer have been determined. The distribution of pores according to their sizes has been evaluated. It has been established that the modification of the bentonitic clay allows directed construction of the hopcalite porous structure,i.e. the formation of the mesoporous structure with a narrow distribution of the pores capacities by sizes, which was achieved varying the sizes of binding compound particles.

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