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Issue 12, 2014
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Synthesis of new polyethoxylated tertiary amines and their use as Switchable Hydrophilicity Solvents

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Abstract

New polyethoxylated tertiary amines were synthesised and applied as Switchable Hydrophilicity Solvents (SHS) in the extraction and recovery of lipids from algal cultures, bypassing harvesting and de-watering steps. The eco-toxicological profile of the new amines was explored by evaluating their potential in inhibiting algal growth, and deepened by measuring the acute toxicity towards the crustacean Daphnia magna and the ready biodegradability in water. Among the synthesised amines, the one bearing two ethoxy units, named amine 2, showed the best combination in terms of lipids' extractive performances and toxicity; therefore it could be considered as a good alternative to N,N-dimethylcyclohexylamine (DMCHA), at the moment the most studied and effective SHS.

Graphical abstract: Synthesis of new polyethoxylated tertiary amines and their use as Switchable Hydrophilicity Solvents

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Supplementary files

Article information


Submitted
29 Nov 2013
Accepted
17 Dec 2013
First published
18 Dec 2013

RSC Adv., 2014,4, 5999-6008
Article type
Paper

Synthesis of new polyethoxylated tertiary amines and their use as Switchable Hydrophilicity Solvents

C. Samorì, L. Pezzolesi, D. L. Barreiro, P. Galletti, A. Pasteris and E. Tagliavini, RSC Adv., 2014, 4, 5999
DOI: 10.1039/C3RA47144F

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