Title :

Deep eutectic solvents as green absorbents of volatile organic pollutants

Author(s) :

Moura, Leila [Auteur]
Moufawad, Tarek [Auteur]
Ferreira, Michel [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bricout, Hervé [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Tilloy, Sebastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Monflier, Eric [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Costa Gomes, Margarida [Auteur]
Landy, David [Auteur]
Fourmentin, Sophie [Auteur]

Journal title :

Environmental Chemistry Letters

Volume number :

15

Pages :

747-753

Publication date :

2017-08-24

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

Volatile organic compounds are a major source of air pollutants. Absorption is an effective solution to treat polluted air loaded with volatile organic compounds, but most actual absorbents are often toxic and non-biodegradable. ...
Show more >Volatile organic compounds are a major source of air pollutants. Absorption is an effective solution to treat polluted air loaded with volatile organic compounds, but most actual absorbents are often toxic and non-biodegradable. Here, we tested eutectic solvent mixtures for the absorption of volatile organic compounds for the first time. The affinity of solvent mixtures for toluene, acetaldehyde and dichloromethane was determined by measuring vapour–liquid partition coefficients and liquid phase absorption capacities. Results show that the vapour–liquid partition coefficients vary, at 30 °C, from close to zero for acetaldehyde in the mixtures choline chloride:urea, choline chloride:glycerol and tetrabutylphosphonium bromide:glycerol to 0.124 for dichloromethane in the choline chloride:urea eutectic mixture. These values are similar or even superior to those published for ionic liquids and organic solvents. Solvents based on choline chloride, a food additive, and urea, can solubilize up to 500 times more volatile organic compounds compare to water. Moreover, deep eutectic solvents are easier to prepare and more biodegradable than ionic liquids, which are also toxic. Deep eutectic solvents are more biodegradable than silicone oils, which are also expensive. Furthermore, in terms of recycling, the absorption capacities of the tested solvents remained unchanged during five absorption–desorption cycles. These findings are patented.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
Université de Lille
CNRS
Centrale Lille
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Catalyse et chimie supramoléculaire (CASU)

Submission date :

2019-09-25T14:06:32Z