Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids

Krishnan, S. and Abd. Ghani, N. and Aminuddin, N.F. and Quraishi, K.S. and Razafindramangarafara, B.L. and Baup, S. and Leveque, J.-M. (2021) Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids. Ultrasonics Sonochemistry, 74. ISSN 13504177

Full text not available from this repository.
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

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. © 2021 The Authors

Item Type: Article
Additional Information: cited By 6
Uncontrolled Keywords: Additives; Algae; Cavitation; Dosimetry; Extraction; Ionic liquids; Lipids; Microorganisms; Pyrene; Surface tension; Viscosity, Alkyl chain lengths; Aqueous mixtures; Imidazolium-based; KI dosimetries; Lipid content; Micro-algae; Radical formation; Ultra-sonication; Ultrasound-assisted extraction; Water surface tension, Ultrasonics, acetic acid; bromide; iodide; ionic liquid; lipid, Article; catalysis; cell membrane; controlled study; dosimetry; microalga; nonhuman; oxidation; priority journal; surface tension; ultrasound assisted extraction; viscosity
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 10 Nov 2023 03:29
Last Modified: 10 Nov 2023 03:29
URI: https://khub.utp.edu.my/scholars/id/eprint/14877

Actions (login required)

View Item
View Item