Removal of imidazolium ionic liquids by microbial associations: Study of the biodegradability and kinetics

Liwarska-Bizukojć, Ewa; Gendaszewska, Dorota

doi:10.1016/j.jbiosc.2012.08.002

Cited by 47 publications

(23 citation statements)

References 20 publications

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“…This indicated that the ionic liquids studied were not accessible for biodegradation being the sole carbon source in wastewater. A similar phenomenon was observed in the case of other imidazolium ionic liquids such as 1‐alkyl‐3‐methyl imidazolium bromide …”

Section: Resultssupporting

confidence: 80%

“…The value of μ max was determined as the slope of OUR changes over time (t) during the exponential growth phase, as was previously shown by Kappeler and Gujer . The value of K S was determined by integration of the OUR curve in the range from the time, at which the specific growth rate (µ) is equal to the half of maximum specific growth rate ( µ max ) for activated sludge biomass to the end‐time of the experiment, when OUR hardly changed in time …”

Section: Methodsmentioning

confidence: 99%

“…More details of the OUR tests and calculations of maximum specific growth rate ( µ max ) and saturation constant ( K S ) are given elsewhere …”

Section: Methodsmentioning

confidence: 99%

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Biodegradability and kinetics of the removal of new peralkylated imidazolium ionic liquids

Liwarska-Bizukojć

Maton

Stevens

et al. 2013

J of Chemical Tech & Biotech

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BACKGROUND Ionic liquids are regarded as potential substitutes for volatile organic solvents. Thus, gaining knowledge about their biological properties is an important task. The main aim of this work was to estimate the biodegradability of newly synthesized tetra‐ and completely substituted imidazolium ionic liquids. Additionally, the kinetic parameters for the biological treatment of wastewater containing one of these ionic liquids were determined. RESULTS The results of OECD tests showed that none of the ionic liquids studied can be classified as readily or inherently biodegradable. The tetra‐substituted ionic liquid with the longest alkyl side chain consisting of six carbon atoms was more susceptible to biodegradation than the other ionic liquids tested. The values of Monod kinetic parameters estimated for the biological treatment of wastewater containing one of these ionic liquids were usually in the range of the values determined for municipal wastewater. CONCLUSION Newly synthesized tetra‐ and completely substituted imidazolium ionic liquids are not susceptible to microbial decomposition. At the same time their presence in wastewater neither reduces the growth rate of activated sludge biomass nor decreases the affinity of substrate to biomass. © 2013 Society of Chemical Industry

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Section: Resultssupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

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Biodegradability and kinetics of the removal of new peralkylated imidazolium ionic liquids

Liwarska-Bizukojć

Maton

Stevens

et al. 2013

J of Chemical Tech & Biotech

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“…65 Other issues then arise such as concentration effects of toxic ILs and biodegradation inhibition that may ensue. 65 Other issues then arise such as concentration effects of toxic ILs and biodegradation inhibition that may ensue.…”

Section: Suitability Of Biodegradation Tests To Il Classes -Toxicity mentioning

confidence: 99%

Biodegradation of ionic liquids – a critical review

2015

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The importance of biodegradation data as part of the design of safer chemicals is presented using ionic liquids (ILs) as a model study. Structural features that promote/impede IL biodegradation, IL design strategies, methods of biodegradation analysis, properties of IL/surfactant derivatives and computational methods of predicting biodegradation are discussed. The importance of metabolite studies as part of biodegradation assays is highlighted. The relevance of applying the lessons learned developing biodegradable ILs to other chemical classes is proposed. A comprehensive appendix of IL biodegradation data published since 2010 (∼300 ILs) has been compiled.

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“…Besides modification to the imidazolium core, evaluation of the influence of the imidazolium alkyl side chain on biodegradability has also been studied. For instance, the incorporation of a long linear alkyl side chain, such as an octyl, decyl, and dodecyl chain, improves the biodegradation of tetrakis(imidazolium)‐ and tetrakis(benzimidazolium)‐based ILs, with biodegradabilities of approximately 10 % for the IL with an ethyl side chain and almost 30 % for the IL with a decyl chain . According to Docherty, elongation of the alkyl side chain favors an increase in degradation as a result of two main factors:…”

Section: Degradation Of Ionic Liquidsmentioning

confidence: 99%

Environmental Impact of Ionic Liquids: Recent Advances in (Eco)toxicology and (Bio)degradability

et al. 2017

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This Review aims to integrate the most recent and pertinent data available on the (bio)degradability and toxicity of ionic liquids for global and critical analysis and on the conscious use of these compounds on a large scale thereafter. The integrated data will enable focus on the recognition of toxicophores and on the way the community has been dealing with them, with the aim to obtain greener and safer ionic liquids. Also, an update of the most recent biotic and abiotic methods developed to overcome some of these challenging issues will be presented. The review structure aims to present a potential sequence of events that can occur upon discharging ionic liquids into the environment and the potential long-term consequences.

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Removal of imidazolium ionic liquids by microbial associations: Study of the biodegradability and kinetics

Cited by 47 publications

References 20 publications

Biodegradability and kinetics of the removal of new peralkylated imidazolium ionic liquids

Biodegradability and kinetics of the removal of new peralkylated imidazolium ionic liquids

Biodegradation of ionic liquids – a critical review

Environmental Impact of Ionic Liquids: Recent Advances in (Eco)toxicology and (Bio)degradability

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