Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids
This study investigates the potential of using small amounts of ionic liquids (IL) to enhance ultrasound-assisted extraction of lipids content from green microalgae. Three imidazolium-based ILs (butyl, octyl and dodecyl), each of them with two anions (bromide and acetate) were tested as additives. V...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-06-01
|
| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417721001188 |
| _version_ | 1819242353506910208 |
|---|---|
| author | Sooridarsan Krishnan Noraini Abd. Ghani Noor Fathanah Aminuddin Khurrum Shehzad Quraishi Beatrice Luciana Razafindramangarafara Stephane Baup Jean-Marc Leveque |
| author_facet | Sooridarsan Krishnan Noraini Abd. Ghani Noor Fathanah Aminuddin Khurrum Shehzad Quraishi Beatrice Luciana Razafindramangarafara Stephane Baup Jean-Marc Leveque |
| author_sort | Sooridarsan Krishnan |
| collection | DOAJ |
| description | This study investigates the potential of using small amounts of ionic liquids (IL) to enhance ultrasound-assisted extraction of lipids content from green microalgae. Three imidazolium-based ILs (butyl, octyl and dodecyl), each of them with two anions (bromide and acetate) were tested as additives. Viscosity and surface tension of the ILs aqueous mixtures were analyzed to determine the influence of ILs’ anions and alkyl chain length, whereas KI dosimetry experiments were used as an indicator of radicals formation. A key finding suggests that the small addition of ILs improves the ultrasonication either by enhancing the viscosity and reducing the water surface tension, leading to a more powerful acoustic cavitation process or by increasing HO° production likely to oxidize the microalgae cells membranes, and consequently disrupting them on a more efficient manner. KI dosimetry also revealed that long ILs alkyl chain is detrimental. This experimental observation is confirmed thus strengthened as the yield of extracted lipids from green microalgae has shown an incremental trend when the IL concentration also increased. These hypotheses are currently under investigation to spot detailed impact of ILs on cavitation process. |
| first_indexed | 2024-12-23T14:38:27Z |
| format | Article |
| id | doaj.art-81b515794bf740118d10b54ad9efe470 |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-12-23T14:38:27Z |
| publishDate | 2021-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-81b515794bf740118d10b54ad9efe4702022-12-21T17:43:18ZengElsevierUltrasonics Sonochemistry1350-41772021-06-0174105576Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquidsSooridarsan Krishnan0Noraini Abd. Ghani1Noor Fathanah Aminuddin2Khurrum Shehzad Quraishi3Beatrice Luciana Razafindramangarafara4Stephane Baup5Jean-Marc Leveque6Centre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, Malaysia; Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, Malaysia; Corresponding authors.Centre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, Malaysia; Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, Malaysia; Corresponding authors.Centre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, MalaysiaCentre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, Malaysia; Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, MalaysiaUniv. Grenoble Alpes, CNRS, Grenoble INP, LRP, 38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, LRP, 38000 Grenoble, FranceLRP UMR 5520, Université de Savoie Mont-Blanc, 73000 Chambéry, FranceThis study investigates the potential of using small amounts of ionic liquids (IL) to enhance ultrasound-assisted extraction of lipids content from green microalgae. Three imidazolium-based ILs (butyl, octyl and dodecyl), each of them with two anions (bromide and acetate) were tested as additives. Viscosity and surface tension of the ILs aqueous mixtures were analyzed to determine the influence of ILs’ anions and alkyl chain length, whereas KI dosimetry experiments were used as an indicator of radicals formation. A key finding suggests that the small addition of ILs improves the ultrasonication either by enhancing the viscosity and reducing the water surface tension, leading to a more powerful acoustic cavitation process or by increasing HO° production likely to oxidize the microalgae cells membranes, and consequently disrupting them on a more efficient manner. KI dosimetry also revealed that long ILs alkyl chain is detrimental. This experimental observation is confirmed thus strengthened as the yield of extracted lipids from green microalgae has shown an incremental trend when the IL concentration also increased. These hypotheses are currently under investigation to spot detailed impact of ILs on cavitation process.http://www.sciencedirect.com/science/article/pii/S1350417721001188Ionic LiquidUltrasoundUltrasound-assisted extractionMicroalgaeLipids |
| spellingShingle | Sooridarsan Krishnan Noraini Abd. Ghani Noor Fathanah Aminuddin Khurrum Shehzad Quraishi Beatrice Luciana Razafindramangarafara Stephane Baup Jean-Marc Leveque Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids Ultrasonics Sonochemistry Ionic Liquid Ultrasound Ultrasound-assisted extraction Microalgae Lipids |
| title | Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids |
| title_full | Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids |
| title_fullStr | Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids |
| title_full_unstemmed | Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids |
| title_short | Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids |
| title_sort | unexpected acceleration of ultrasonic assisted iodide dosimetry in the catalytic presence of ionic liquids |
| topic | Ionic Liquid Ultrasound Ultrasound-assisted extraction Microalgae Lipids |
| url | http://www.sciencedirect.com/science/article/pii/S1350417721001188 |
| work_keys_str_mv | AT sooridarsankrishnan unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT norainiabdghani unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT noorfathanahaminuddin unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT khurrumshehzadquraishi unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT beatricelucianarazafindramangarafara unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT stephanebaup unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids AT jeanmarcleveque unexpectedaccelerationofultrasonicassistediodidedosimetryinthecatalyticpresenceofionicliquids |