A comparative study of electrochemical degradation of imidazolium and pyridinium ionic liquids: A reaction pathway and ecotoxicity evaluation

Pieczyńska, Aleksandra; Ofiarska, Aleksandra; Borzyszkowska, Agnieszka Fiszka; Białk‐Bielińska, Anna; Stepnowski, Piotr; Stolte, Stefan; Siedlecka, Ewa Maria

doi:10.1016/j.seppur.2015.10.045

Cited by 41 publications

(22 citation statements)

References 40 publications

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“…The decay rates of the tested anions follow the order chloride>bromide≈tetrafluoroborate≈hexafluorophosphate≈trifluoromethanesulfonate>4‐toluenesulfonate. Pieczyńska et al . have also studied the influence of the chemical composition of ILs on the degradation efficiency by BDD, namely, the structural elements of the side chain and head group.…”

Section: Degradation Of Ionic Liquidsmentioning

confidence: 99%

“…However, the results for the [bmim]Cl/NaCl mixture show that the metabolites are not as harmless as the untreated IL. In fact, the investigators observe a considerable increase in the growth inhibition of the Scenedesmus vacuolatus and Lemna minor species after electrolytic treatment . Recently, AuPd/Fe 3 O 4 nanoparticles have been used as particle electrodes (PEs) in the electrochemical degradation of ILs .…”

Section: Degradation Of Ionic Liquidsmentioning

confidence: 99%

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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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Section: Degradation Of Ionic Liquidsmentioning

confidence: 99%

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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“…Conversely, this environmental‐friendly miniaturized MSPDE applied β‐cyclodextrin (β‐CD) as adsorbent and IL as eluent, which was particularly spent less time and consumed few samples and less reagent than the other extraction methods. Some imidazolium ILs were reported to be resistant to biotic degradation processes, which might lead to water pollution and algae toxicity (Pieczyńska et al, ). However, a few investigations about degradation, removal, and reuse of ILs have been reported by scholars particularly (An, Zong, & Wu, ; Coleman & Gathergood, ; Modelli, Sali, Galletti, & Samorì, ; Siedlecka, Stolte, & ˛biowski M. G., Nienstedt, A., Stepnowski, P., Thöming, J., ; Stolte, Steudte, Igartua, & Stepnowski, ).…”

Section: Resultsmentioning

confidence: 99%

“…The content of target compounds extracted by different extraction methods for the same batch of Mori Fructus was compared (Table S4 in Supplementary Material particularly spent less time and consumed few samples and less reagent than the other extraction methods. Some imidazolium ILs were reported to be resistant to biotic degradation processes, which might lead to water pollution and algae toxicity (Pieczyńska et al, 2015).…”

Section: Comparison With the Other Extraction Methods For Phenolic mentioning

confidence: 99%

Determination of antioxidant ingredients in Mori Fructus employing ionic liquid‐assisted miniaturized matrix solid‐phase dispersion extraction via ultra‐performance liquid chromatography

Chen

et al. 2019

J Food Biochem

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A simple miniaturized matrix solid‐phase dispersion extraction was developed to analyze multiple antioxidant ingredients (neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, rutin, isoquercitrin, and astragalin) in Mori Fructus by ultra performance liquid chromatography coupled with an ultraviolet detector. 1‐ethyl‐3‐methylimidazolium bromide was employed in the elution process as eco‐friendly elution solvent. The effects of some factors on the extraction efficiency of antioxidants in Mori Fructus were optimized in detail, such as the type of adsorbent, the type of elution solvent, the concentration and volume of elution solvent, sample to adsorbent ratio, and the grinding time. The intra‐day and inter‐day precisions (RSD) were both below 5.0% and the recoveries of all analytes ranged from 93.5% to 98.3%. Compared with the traditional method, it was efficient, simple and environment‐friendly for extracting the analytes by ionic liquid assisted trace β‐CD matrix solid‐phase dispersion extraction method, due to shorter extraction time, less reagent and less sample consumption. The developed method was successfully used for extracting and determining the active compounds in Mori Fructus sample. Practical applications The antioxidant ingredients play important roles in Mori Fructus because of their main pharmacological activities. Nowadays, a few analytical methods could be applied for extracting and analyzing these target compounds. But these methods not only required much extracting and analyzing time, but also need a great deal of organic reagent, which were not environmentally friendly. Thus, a green and simple miniaturized matrix solid phase dispersion extraction method was proposed for the analysis of these antioxidants in Mori Fructus, which was efficient to be employed for evaluating the quality of Traditional Chinese Medicine.

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“…Formerly, ILs were typically eliminated through Advanced Oxidation Processes (AOPs). Thus, ILs can be efficiently removed from water by Fenton oxidation, catalytic wet peroxide oxidation, electroxidation or photodegradation . Specifically, Munoz et al, 2015, studied the Fenton oxidation of the IL choline chloride (CholineCl) at an initial concentration of 1000 mg L −1 with a stoichiometric dose of H 2 O 2 and 50 mgFe 3+ L −1 at pH 3 at 70 °C; they obtained a very low mineralization rate in terms of TOC removal (36.1%) relative to ILs from other families such as EmimCl (65.3%) and BmpyCl (43.7%) under identical conditions .…”

Section: Introductionmentioning

confidence: 99%

Biological oxidation of choline‐based ionic liquids in sequencing batch reactors

Mena

Díaz

Rodrı́guez

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Ionic liquids (ILs) are salts consisting of an organic cation and an organic or inorganic anion that are potential use for organic synthesis, biomass conversion, gas absorption, polymerization, metal extraction and lubrication. We examined the biodegradability of choline chloride (CholineCl), choline acetate (CholineAc) and choline bis(trifluoromethylsulfonyl)imide (CholineNTf2) in a sequencing batch reactor (SBR) to assess the influence of the IL anion. RESULTS Following acclimation, activated sludge exhibited good activity, and high COD (80–90%) and TOC removal (75–85%) with initial concentrations of CholineCl and CholineAc over the range 0.25–15 mmol L–1. However, increased concentrations of CholineNTf2 in the reactor feed had an inhibitory effect on the sludge. An analysis of the reaction effluent revealed the presence of the main intermediates of choline degradation: ethanol, and methyl‐, dimethyl‐ and trimethylamine. The initial and final microbial communities of the sludge were characterized by pyrosequencing analysis, and the latter was found to consist mainly of Alfa‐, Beta‐ and Gamma‐proteobacteria. CONCLUSION Choline‐based ionic liquids can be efficiently removed in SBRs. Complete choline degradation (0.25–15 mmol L–1) was accomplished at a variable depletion rate depending on the particular IL anion (chloride, acetate or NTf2). © 2019 Society of Chemical Industry

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A comparative study of electrochemical degradation of imidazolium and pyridinium ionic liquids: A reaction pathway and ecotoxicity evaluation

Cited by 41 publications

References 40 publications

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

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

Determination of antioxidant ingredients in Mori Fructus employing ionic liquid‐assisted miniaturized matrix solid‐phase dispersion extraction via ultra‐performance liquid chromatography

Biological oxidation of choline‐based ionic liquids in sequencing batch reactors

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