Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20178
Title: (Eco)toxicity and biodegradability of protic ionic liquids
Author: Oliveira, Maria V. S.
Vidal, Bruna T.
Melo, Claudia M.
de Miranda, Rita de C. M.
Soares, Cleide M. P.
Coutinho, Joao A. P.
Ventura, Sonia P. M.
Mattedi, Silvana
Lima, Alvaro S.
Keywords: FISCHERI MARINE-BACTERIA
ANTIMICROBIAL ACTIVITIES
PHYSICOCHEMICAL PROPERTIES
TERRESTRIAL ECOTOXICITY
PHASE-BEHAVIOR
ALLIUM-CEPA
IMIDAZOLIUM
TOXICITY
ANION
PYRIDINIUM
Issue Date: 2016
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
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 (R) 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 to increase the negative impact of the PILs towards the organisms and biological systems under study. According to these results, m-2-HEM and m-2-HEAP are the less and most toxic PILs studied in this work, respectively. Additionally, all the PILs have demonstrated low biodegradability. (C) 2016 Published by Elsevier Ltd.
Peer review: yes
URI: http://hdl.handle.net/10773/20178
DOI: 10.1016/j.chemosphere.2015.11.016
ISSN: 0045-6535
Publisher Version: 10.1016/j.chemosphere.2015.11.016
Appears in Collections:CICECO - Artigos

Files in This Item:
File Description SizeFormat 
Eco)toxicity and biodegradability of protic ionic liquids_10.1016j.chemosphere.2015.11.016.pdf692.65 kBAdobe PDFrestrictedAccess


FacebookTwitterLinkedIn
Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.