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Carbon Dioxide and n ‐Hexane Absorption Using a Gas‐Liquid‐Liquid Reactor
Author(s) -
GómezDíaz Diego,
LópezRivas David,
Navaza José M.,
Couvert Annabelle
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500459
Subject(s) - absorption (acoustics) , emulsion , hexane , liquid gas , carbon dioxide , silicone oil , absorption rate , chemistry , liquid nitrogen , gas phase , liquid phase , chromatography , aqueous solution , chemical engineering , analytical chemistry (journal) , materials science , organic chemistry , composite material , thermodynamics , physics , engineering
Simultaneous absorption of the acid gas CO 2 and a volatile organic compound (VOC; here n ‐hexane) from a polluted gas stream by using an emulsion in a gas‐liquid‐liquid (GLL) reactor was investigated. In order to enhance the VOC capture, a nonaqueous liquid phase in the form of silicone oil was applied in the gas absorber. In addition, the regeneration process of both liquid phases was analyzed. The effect of methyldiethanolamine concentration in the aqueous phase and percentage of the organic phase was evaluated, showing opposite results for the liquid phases regarding each gas due to the differences between them. A higher amount of silicone oil causes a significant improvement in VOC absorption rate with negligible influence on CO 2 behavior. The gas composition was modified by nitrogen.