eprintid: 14877
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/48/77
datestamp: 2023-11-10 03:29:28
lastmod: 2023-11-10 03:29:28
status_changed: 2023-11-10 01:58:03
type: article
metadata_visibility: show
creators_name: Krishnan, S.
creators_name: Abd. Ghani, N.
creators_name: Aminuddin, N.F.
creators_name: Quraishi, K.S.
creators_name: Razafindramangarafara, B.L.
creators_name: Baup, S.
creators_name: Leveque, J.-M.
title: Unexpected acceleration of Ultrasonic-Assisted iodide dosimetry in the catalytic presence of ionic liquids
ispublished: pub
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
note: cited By 6
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
date: 2021
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105565415&doi=10.1016%2fj.ultsonch.2021.105576&partnerID=40&md5=cea550662820fa19eb6e4c603204b7d5
id_number: 10.1016/j.ultsonch.2021.105576
full_text_status: none
publication: Ultrasonics Sonochemistry
volume: 74
refereed: TRUE
issn: 13504177
citation:   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