Solubility of CO2 in aqueous piperazine and its modeling using the Kent-Eisenberg approach

Aroua, Mohamed Kheireddine and Salleh, R.M. (2004) Solubility of CO2 in aqueous piperazine and its modeling using the Kent-Eisenberg approach. Chemical Engineering & Technology, 27 (1). pp. 65-70. ISSN 0930-7516, DOI

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A systematic investigation of the equilibrium solubility of CO2 in aqueous piperazine solutions was conducted in a double-jacketed stirred cell reactor. The solubilities of CO2 in the solution were measured at 20, 30, 40, and 50 °C with CO2 partial pressures ranging from 0.4-95 kPa. Generally the aqueous piperazine solution exhibits the same characteristics as conventional alkanolamines. Increasing the CO2 partial pressure increases the gas loading, however increasing the temperature or concentration decreases the CO2 loading. The values of the CO2 loading obtained confirm that the piperazine forms stable carbamates. The equilibrium solubility data were analyzed using a Kent-Eisenberg approach. Representation of the model is generally in good agreement with that of the experimental data, especially at high temperature.

Item Type: Article
Additional Information: 766VB Times Cited:17 Cited References Count:18
Uncontrolled Keywords: Carbon dioxide; Concentration (process); Partial pressure; Solubility; Solutions; Double-jacketed stirred cell reactor; Nitrogen compounds; aqueous solution; gas separation; mathematical modeling; pollutant removal.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 17 Jul 2013 07:47
Last Modified: 04 Nov 2019 06:33

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