Modeling and optimization of a periodic process of adsorption and catalytic regeneration

Yu Matatov-Meytal; O. Nekhamkina; M. Sheintuch

doi:10.1016/S0009-2509(99)00065-2

Modeling and optimization of a periodic process of adsorption and catalytic regeneration

Yu Matatov-Meytal^*, O. Nekhamkina, M. Sheintuch

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

6 Scopus citations

Abstract

An adsorption process of water pollutants on a bed of activated carbon (AC) modified with metal oxide catalysts, was integrated in a single unit with periodic catalytic gas-phase regeneration at 240-290 °C. In the present contribution we report on the kinetics of the regeneration process: it exhibit an induction period and the rate passes through a maximum. Replotting the data scaled with respect to the maximal rate and the corresponding time shows that the curves overlap. In the process of regeneration the adsorbate moves from the carbon to the metal catalyst crystallites probably by surface diffusion. This process is modeled and compared with experimental observations. Solutions of suggested models with various kinetics are compared with experimental observation enabling to extract parameters like activation energies and rate constants.

Original language	English
Pages (from-to)	1505-1517
Number of pages	13
Journal	Chemical Engineering Science
Volume	54
Issue number	10
DOIs	https://doi.org/10.1016/S0009-2509(99)00065-2
State	Published - May 1999
Externally published	Yes
Event	Proceedings of the 1999 1st International Symposium on Multifunctional Reactors - Amsterdam, NLD Duration: 25 Apr 1999 → 28 Apr 1999

Keywords

Adsorption
Catalysis
Granular materials
Kinetics
Reaction engineering

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10.1016/S0009-2509(99)00065-2

Cite this

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title = "Modeling and optimization of a periodic process of adsorption and catalytic regeneration",

abstract = "An adsorption process of water pollutants on a bed of activated carbon (AC) modified with metal oxide catalysts, was integrated in a single unit with periodic catalytic gas-phase regeneration at 240-290 °C. In the present contribution we report on the kinetics of the regeneration process: it exhibit an induction period and the rate passes through a maximum. Replotting the data scaled with respect to the maximal rate and the corresponding time shows that the curves overlap. In the process of regeneration the adsorbate moves from the carbon to the metal catalyst crystallites probably by surface diffusion. This process is modeled and compared with experimental observations. Solutions of suggested models with various kinetics are compared with experimental observation enabling to extract parameters like activation energies and rate constants.",

keywords = "Adsorption, Catalysis, Granular materials, Kinetics, Reaction engineering",

author = "Yu Matatov-Meytal and O. Nekhamkina and M. Sheintuch",

note = "Funding Information: This research was supported by The Water; Proceedings of the 1999 1st International Symposium on Multifunctional Reactors ; Conference date: 25-04-1999 Through 28-04-1999",

year = "1999",

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doi = "10.1016/S0009-2509(99)00065-2",

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journal = "Chemical Engineering Science",

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T1 - Modeling and optimization of a periodic process of adsorption and catalytic regeneration

AU - Matatov-Meytal, Yu

AU - Nekhamkina, O.

AU - Sheintuch, M.

N1 - Funding Information: This research was supported by The Water

PY - 1999/5

Y1 - 1999/5

N2 - An adsorption process of water pollutants on a bed of activated carbon (AC) modified with metal oxide catalysts, was integrated in a single unit with periodic catalytic gas-phase regeneration at 240-290 °C. In the present contribution we report on the kinetics of the regeneration process: it exhibit an induction period and the rate passes through a maximum. Replotting the data scaled with respect to the maximal rate and the corresponding time shows that the curves overlap. In the process of regeneration the adsorbate moves from the carbon to the metal catalyst crystallites probably by surface diffusion. This process is modeled and compared with experimental observations. Solutions of suggested models with various kinetics are compared with experimental observation enabling to extract parameters like activation energies and rate constants.

AB - An adsorption process of water pollutants on a bed of activated carbon (AC) modified with metal oxide catalysts, was integrated in a single unit with periodic catalytic gas-phase regeneration at 240-290 °C. In the present contribution we report on the kinetics of the regeneration process: it exhibit an induction period and the rate passes through a maximum. Replotting the data scaled with respect to the maximal rate and the corresponding time shows that the curves overlap. In the process of regeneration the adsorbate moves from the carbon to the metal catalyst crystallites probably by surface diffusion. This process is modeled and compared with experimental observations. Solutions of suggested models with various kinetics are compared with experimental observation enabling to extract parameters like activation energies and rate constants.

KW - Adsorption

KW - Catalysis

KW - Granular materials

KW - Kinetics

KW - Reaction engineering

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DO - 10.1016/S0009-2509(99)00065-2

M3 - 会议文章

AN - SCOPUS:0345062126

SN - 0009-2509

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SP - 1505

EP - 1517

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 10

T2 - Proceedings of the 1999 1st International Symposium on Multifunctional Reactors

Y2 - 25 April 1999 through 28 April 1999

ER -

Modeling and optimization of a periodic process of adsorption and catalytic regeneration

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Keywords

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