State of an adsorbed substance in the micropores of zeolites at high degrees of filling

1982 ◽  
Vol 31 (6) ◽  
pp. 1071-1077 ◽  
Author(s):  
A. A. Fomkin ◽  
V. V. Serpinskii ◽  
K. Fidler
Keyword(s):  
Adsorbed Substance

scholarly journals Testing Sorption Properties of Halloysite by Means of the Laser Interferometry Method

2015 ◽  
Vol 37 (1) ◽  
pp. 43-47
Author(s):  
Sławomir Wąsik ◽  
Michał Arabski ◽  
Karolina Maciejec ◽  
Grażyna Suchanek ◽  
Anna Świercz
Keyword(s):  
Concentration Field ◽  
Laser Interferometry ◽  
Membrane System ◽  
Absorption Capacity ◽  
Sorption Properties ◽  
Concentration Profiles ◽  
Adsorbed Substance ◽  
Interferometry Method ◽  
Set Up ◽  
Kinetics Of

The objective of the present study has been to test the laser interferometry method in terms of its usability for investigating sorption properties of minerals. This method was used to test the absorption capacity of halloysite with reference to glucose, which is often found in industrial wastewater and whose excess can disturb the environmental eco-balance. The sorption capacity of halloysite was thus determined indirectly, basing on the comparison of concentration profiles as well as time characteristics of glucose quantities released from the control solution and from the solution incubated with a halloysite adsorbent. An analysis of glucose diffusion was conducted in a two-chamber membrane system. On the basis of the obtained concentration profiles, the evolution of the concentration field was determined; so were the removal efficiency (%) and the amount of glucose adsorbed at equilibrium (qe, mg/g). The obtained results confirm good sorption properties of halloysite with respect to the investigated substance as well as usability of the method for this kind of investigations. The presented tests suggest that the measurement set-up can be optimised in such as way that visual rendering and testing the kinetics of the adsorbed substance direct release from the studied material become possible.

Nature of the adsorbed substance as a factor in the static charge of man-made fibres

1976 ◽  
Vol 8 (3) ◽  
pp. 334-337
Author(s):  
M. M. Skarulite ◽  
Yu. Yu. Shlyazhas
Keyword(s):  
Static Charge ◽  
Adsorbed Substance

Adsorption and Oxidation of Thiosulfate on a Platinum Electrode in Acid Solution

1998 ◽  
Vol 63 (1) ◽  
pp. 20-30 ◽  
Author(s):  
Tomáš Loučka
Keyword(s):  
Open Circuit Potential ◽  
Platinum Electrode ◽  
Supporting Electrolyte ◽  
Open Circuit ◽  
Adsorbed Layers ◽  
Adsorbed Substance ◽  
Adsorbed Sulfur ◽  
Adsorption Desorption ◽  
Supporting Electrolyte Solution ◽  
Thiosulfate Concentration

The adsorption of thiosulfate on a platinum electrode was measured at the open circuit potential. A monolayer of the adsorption products covers the electrode at lower thiosulfate concentrations. The charge used up during the reduction of the monolayer roughly corresponds to 0.5 electron per surface site (e.p.s.), the charge used up during the oxidation of the monolayer after reduction corresponds approximately to 4 e.p.s. Multiple adsorbed layers, which are presumably constituted mainly by adsorbed sulfur, build up at higher thiosulfate concentrations. The amount of the adsorbed substance increases with increasing thiosulfate concentration and time of adsorption. Desorption from the surface coated by multiple layers can take place in supporting electrolyte solution. The build-up of multiple adsorbed sulfur layers also takes place during adsorption from solutions of colloidal sulfur.

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