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Open AccessArticle

Continuous Process for Carbon Dioxide Capture Using Lysine and Tetrabutyl Phosphonium Lysinate Aqueous Mixtures in a Packed Tower

1
Hydrocarbon Refining Management, Mexican Petroleum Institute, Eje Central Lázaro Cárdenas 152, 07730 México City, Mexico
2
Environmental Analysis Laboratory, Mexican Petroleum Institute, Eje Central Lázaro Cárdenas 152, 07730 México City, Mexico
3
Academic Unit of Chemical Sciences, Autonomous University of Zacatecas, Carretera a Guadalajara Km. 6, Ejido La Escondida, 98160 Zacatecas, Mexico
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(4), 426; https://doi.org/10.3390/catal10040426
Received: 25 February 2020 / Revised: 6 April 2020 / Accepted: 10 April 2020 / Published: 14 April 2020
The CO2 absorption process using aqueous solutions of lysine (Lys), the ionic liquid (IL) tetrabutyl phosphonium lysinate ([TBP][Lys]) and their mixtures was studied by means of a packed tower. The performance of these systems was evaluated through the volumetric overall mass transfer coefficient ( K G a V ) , conducting experiments under diverse conditions such as inlet CO2 concentration from 10 to 40 vol.%, gas and absorbent flow rates from 100 to 200 mL/min and from 3 to 5 mL/min, respectively, absorbent concentration from 5 to 15 wt.% and temperature from 15 to 40 °C. The obtained results for all the previous experimental conditions were better for the IL/Lys mixture than for the isolated components; the best performance was shown by the experiment varying the absorbent concentration, where the increasing K G a V was benefited by the IL/Lys synergistic effect. View Full-Text
Keywords: ionic liquid; tetrabutyl phosphonium lysinate; lysine; CO2 capture; continuous packed tower ionic liquid; tetrabutyl phosphonium lysinate; lysine; CO2 capture; continuous packed tower
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MDPI and ACS Style

Zúñiga-Mendiola, A.J.; Gómora-Herrera, D.R.; García-González, J.M.; Guzmán-Pantoja, J. Continuous Process for Carbon Dioxide Capture Using Lysine and Tetrabutyl Phosphonium Lysinate Aqueous Mixtures in a Packed Tower. Catalysts 2020, 10, 426.

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