Modeling of the Limiting Step of Water Sorption by Composite Sorbents of the “Calcium Chloride in Porous Matrix” Type Full article
| Journal |
Theoretical Foundations of Chemical Engineering
ISSN: 0040-5795 , E-ISSN: 1608-3431 |
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| Output data | Year: 2007, Volume: 41, Number: 1, Pages: 83-90 Pages count : 8 DOI: 10.1134/S0040579507010095 | ||||
| Tags | Water Sorption; Porous Matrix; Sorption Rate; Solution Layer; Water Vapor Sorption | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 03-02-39017 |
| 2 | Russian Foundation for Basic Research | 04-02-81028 |
| 3 | Siberian Branch of the Russian Academy of Sciences |
Abstract:
A nonstationary model is proposed to describe the water sorption from air by composite sorbents of the “salt in a porous matrix” type via the interaction of water with the salt to form a salt solution in pores. It is shown that the dynamics of the moisture content at the adsorber cannot be described under the assumption of constancy of the effective sorption rate constant. The limiting step of water sorption is analyzed, and it is supposed that the limiting step is the water diffusion through the solution layer forming near the external surface of a granule. An expression for the sorption rate constant as a function of the moisture content of the sorbent is proposed that takes into account the monotonic decrease in this constant with an increase in the amount of water sorbed. The effective diffusion coefficient at the limiting step of sorption is determined, which turns out to be close to the effective diffusion coefficient in an aqueous calcium chloride solution.
Cite:
Ostrovskii N.M.
, Chumakova N.A.
, Bukhavtsova N.M.
, Vernikovskaya N.V.
, Aristov Y.I.
Modeling of the Limiting Step of Water Sorption by Composite Sorbents of the “Calcium Chloride in Porous Matrix” Type
Theoretical Foundations of Chemical Engineering. 2007. V.41. N1. P.83-90. DOI: 10.1134/S0040579507010095 WOS Scopus РИНЦ ANCAN OpenAlex
Modeling of the Limiting Step of Water Sorption by Composite Sorbents of the “Calcium Chloride in Porous Matrix” Type
Theoretical Foundations of Chemical Engineering. 2007. V.41. N1. P.83-90. DOI: 10.1134/S0040579507010095 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Островский Н.М.
, Чумакова Н.А.
, Бухавцова Н.М.
, Верниковская Н.В.
, Аристов Ю.И.
Моделирование лимитирующей стадии процесса сорбции воды композитными сорбентами “хлорид кальция в пористой матрице”
Теоретические основы химической технологии. 2007. Т.41. №1. С.88-94. РИНЦ
Моделирование лимитирующей стадии процесса сорбции воды композитными сорбентами “хлорид кальция в пористой матрице”
Теоретические основы химической технологии. 2007. Т.41. №1. С.88-94. РИНЦ
Dates:
| Submitted: | Nov 8, 2005 |
| Published print: | Jan 1, 2007 |
Identifiers:
| Web of science: | WOS:000244850000009 |
| Scopus: | 2-s2.0-33947165721 |
| Elibrary: | 13550327 |
| Chemical Abstracts: | 2007:274991 |
| Chemical Abstracts (print): | 148:222789 |
| OpenAlex: | W2071655525 |