Some inverse problems of internal-diffusion kinetics of adsorption

1993 ◽  
Vol 66 (4) ◽  
pp. 2387-2390 ◽  
Author(s):  
I. P. Gavrilyuk ◽  
P. F. Zhuk ◽  
L. N. Bondarenko
Keyword(s):  
Inverse Problems ◽  
Internal Diffusion ◽  
Diffusion Kinetics ◽  
Kinetics Of Adsorption ◽  
Kinetics Of

Study on the diffusion kinetics of adsorption of heavy rare earth with Cyanex272-P507 impregnated resin

2010 ◽  
Vol 28 ◽  
pp. 120-124 ◽  
Author(s):  
Chunfa LIAO ◽  
Huaping Nie ◽  
Yunfen JIAO ◽  
Yong LIANG ◽  
Shaohua YANG
Keyword(s):  
Rare Earth ◽  
Diffusion Kinetics ◽  
Heavy Rare Earth ◽  
Kinetics Of Adsorption ◽  
Impregnated Resin ◽  
Kinetics Of

Simulation of ion exchange interaction kinetics in the clinoptylolite - ammonium ion system

2021 ◽  
Vol 6 (4) ◽  
pp. 233-237
Author(s):  
Vira Sabadash ◽  
◽  
Jaroslaw Gumnitsky ◽  
Sofia Omelyanova ◽  
◽  
...  
Keyword(s):  
Mathematical Model ◽  
Mass Transfer ◽  
Ion Exchange ◽  
Rate Constants ◽  
Internal Diffusion ◽  
Ammonium Ion ◽  
Ammonium Ions ◽  
Kinetics Of Adsorption ◽  
Interaction Kinetics ◽  
Kinetics Of

The kinetics of adsorption of ammonium ions under dynamic conditions has been studied. A mathematical model of the process was built. The mass transfer coefficient was calculated depending on the intensity of the change of location. It was established that ion exchange occurs in external and internal diffusion regions. The rate constants of ion exchange for the region of external and internal diffusion were calculated.

Kinetics of Methane-Oxidizing Biofilms for Degradation of Toxic Organics

1988 ◽  
Vol 20 (11-12) ◽  
pp. 167-173 ◽  
Author(s):  
S. E. Strand ◽  
R. M. Seamons ◽  
M. D. Bjelland ◽  
H. D. Stensel
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Enzymatic Oxidation ◽  
Diffusion Kinetics ◽  
Toxic Compound ◽  
Biofilm Model ◽  
Uptake Rates ◽  
Substrate Diffusion ◽  
Toxic Organics ◽  
Competitive Substrate ◽  
Kinetics Of

The kinetics of methane-oxidizing bioreactors for the degradation of toxic organics are modeled. Calculations of the fluxes of methane and toxic chlorinated hydrocarbons were made using a biofilm model. The model simulated the effects of competition by toxics and mediane on their enzymatic oxidation by the methane monooxygenase. Dual-competitive-substrate/diffusion kinetics were used to model biofilm co-metabolism, integrating equations of the following form:where S1 and S2 are the local concentrations of methane and toxic compound, respectively, and r and K are the maximum uptake rates and Monod coefficients, and x is the distance into the biofilm.

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