Kinetics of the absorption of carbon dioxide into aqueous ammonia solutions. Issue 10 (22nd June 2016)

• Record Type: Journal Article
• Authors: Yu, Hesheng; Tan, Zhongchao; Thé, Jesse; Feng, Xianshe; Croiset, Eric; Anderson, William A.
• Is Part Of: AIChE journal. Volume 62:Issue 10(2016)
• Page Start: 3673
• Page End: 3684
• Publication Date: 2016-06-22
• Subjects: CO2 absorption -- kinetics -- aqueous ammonia -- mass transfer -- enhancement factor; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.15296
• Languages: English
• ISSNs: 0001-1541

Abstract

Abstract : Experiments were performed in a customized double stirred tank reactor to study the kinetics of CO2 absorption into NH3 solutions at concentrations ranging from 0.42 to 7.67 kmol·m −3 and temperatures between 273.15 and 293.15 K. The results show that the reactive absorption was first order with respect to CO2 but fractional order (1.6–1.8) with respect to ammonia. Experimental data can be satisfactorily interpreted by a termolecular mechanism using k NH 3 T = 7.6089 × 10 8 exp ⁡ ( − 4018.4 T ) and k H 2 O T = 7.9161 × 10 7 exp ⁡ ( − 4356.4 T ) . © 2016 American Institute of Chemical Engineers AIChE J, 62: 3673–3684, 2016