### Effect of fine solid particles on absorption rate of gaseous CO$_{2}$Effect of fine solid particles on absorption rate of gaseous CO$_{2}$

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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