Effect of Absorbent Type and Concentration on CO2 Capture from a Gas Stream into a Liquid Phase

被引：18

作者：

Capannelli, Gustavo ^{[1
]}

Comite, Antonio ^{[1
]}

Costa, Camilla ^{[1
]}

Di Felice, Renzo ^{[2
]}

机构：

[1] Univ Studi Genova, Dipartimento Chim & Chim Ind, I-16145 Genoa, Italy

[2] Univ Studi Genova, Dipartimento Ingn Civile Chim Ambientale, I-16145 Genoa, Italy

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 36期

关键词：

CARBON-DIOXIDE ABSORPTION; HOLLOW-FIBER MEMBRANES; AQUEOUS-SOLUTIONS; MASS-TRANSFER; KINETICS; MONOETHANOLAMINE; PIPERAZINE; REMOVAL; SOLUBILITY; N2O;

D O I：

10.1021/ie401376w

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Carbon dioxide from a gas stream was captured in a liquid water solution through a polymeric membrane that provided the interfacial area between the two phases. Three different absorbents (monoethanolamine, piperazine, and potassium carbonate) were tested, and the effects of their concentrations on the CO2 absorption rate were investigated. The solution containing piperazine showed the best CO2 uptake, whereas that containing potassium carbonate was the least effective. This observation can be fully explained when the effects of the physicochemical parameters governing the absorption process (CO2 solubility, diffusivity, and reactivity in the solution) are taken into proper account. Useful guidelines for the correct design of a CO2 capturing system by a liquid solution were obtained.

引用

页码：13128 / 13136

页数：9

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