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Author Lu, Sumin ♦ Ma, Youguang ♦ Shen, Shuhua ♦ Zhu, Chunying
Source SpringerLink
Content type Text
Publisher SP Higher Education Press
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences
Subject Keyword absorption enhancement ♦ enhancement factors ♦ surface coverage fraction ♦ adsorption capacity ♦ Nanotechnology ♦ Industrial Chemistry/Chemical Engineering
Abstract The influence of the properties of solid particles in slurry on the absorption of CO$_{2}$ in the slurry was investigated in a stirred thermostatic reactor. The absorption experiments were carried out in three different slurries consisting of water, cyclohexane and soybean oil, respectively, and three kinds of solid particles (active carbon, active alumina and silica gel) were incorporated into each of the above mentioned slurries separately. The experimental results show that the active carbon particles could enhance the absorption rate of gaseous CO$_{2}$ in the aqueous slurry, while in the cyclohexane slurry, active carbon particles indicated no the absorption enhancement effect. However, it was observed that the active alumina and silica gel particles could enhance the absorption rate of CO$_{2}$ in the cyclohexane slurry. These phenomena indicate that the solid particles, which could enhance the gaseous CO$_{2}$ absorption rate, should possess two properties simultaneously, i.e. they rejected the solvent and had higher adsorption capacity for the solute. The experimental results also show that, as for those solid particles which could enhance the gas absorption rate, the enhancement increased quickly with the increase of solid concentration in slurry at first, and then reached a constant value gradually. It was also found that the enhancement factor was related to the coverage fraction of solid particles on the gas-liquid interface, and due to the reduction of surface fraction with increasing stirred speed, the enhancement factor decreased.
ISSN 16737369
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-09-19
Publisher Institution Chinese Universities
Publisher Place Heidelberg
e-ISSN 16737474
Journal Frontiers of Chemical Engineering in China
Volume Number 2
Issue Number 4
Page Count 5
Starting Page 368
Ending Page 372

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Source: SpringerLink