(Eco)toxicity and biodegradability of protic ionic liquids

Chemosphere
Maria V S OliveiraAlvaro S Lima

Abstract

Ionic liquids (ILs) are often claimed to be "environmentally friendly" compounds however, the knowledge of their potential toxicity towards different organisms and trophic levels is still limited, in particular when protic ionic liquids (PILs) are addressed. This study aims to evaluate the toxicity against various microorganisms and the biodegradability of four PILs namely, N-methyl-2-hydroxyethylammonium acetate, m-2-HEAA; N-methyl-2-hydroxyethylammonium propionate, m-2-HEAPr; N-methyl-2-hydroxyethylammonium butyrate, m-2-HEAB; and N-methyl-2-hydroxyethylammonium pentanoate, m-2-HEAP. The antimicrobial activity was determined against the two bacteria, Sthaplylococcus aureus ATCC-6533 and Escherichia coli CCT-0355; the yeast Candida albicans ATCC-76645; and the fungi Fusarium sp. LM03. The toxicity of all PILs was tested against the aquatic luminescent marine bacterium Vibrio fischeri using the Microtox(®) test. The impact of the PILs was also studied regarding their effect on lettuce seeds (Lactuta sativa). The biodegradability of these PILs was evaluated using the ratio between the biochemical oxygen demand (BOD) and the chemical oxygen demand (COD). The results show that, in general, the elongation of the alkyl chain tends t...Continue Reading

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Citations

Nov 22, 2018·Physical Chemistry Chemical Physics : PCCP·Carlos M N MendonçaAna Barros-Timmons
Oct 17, 2017·Environmental Science and Pollution Research International·Jessica MeijideMaria Ángeles Sanromán
May 6, 2019·International Journal of Molecular Sciences·Peng ZhuHongzhong Zhang
Dec 19, 2018·Applied Microbiology and Biotechnology·Cassamo Ussemane MussagyJorge Fernando Brandão Pereira
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Sep 8, 2019·Ecotoxicology and Environmental Safety·Juan J ParajóSónia P M Ventura
Aug 28, 2020·Ecotoxicology and Environmental Safety·Tian LanQiang Wang
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Jan 28, 2020·The Journal of Physical Chemistry. B·Sara RozasSantiago Aparicio
Aug 28, 2021·Journal of Hazardous Materials·Maria Rita Ortega VegaCélia de Fraga Malfatti

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