4.7 Article

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

Journal

ULTRASONICS SONOCHEMISTRY
Volume 74, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.ultsonch.2021.105576

Keywords

Ionic Liquid; Ultrasound; Ultrasound-assisted extraction; Microalgae; Lipids

Funding

  1. Fundamental Research Grant Scheme by Ministry of Higher Education (MOHE) Malaysia [FRGS/1/2015/TK10/UTP/02/5]

Ask authors/readers for more resources

This study investigates the potential of using small amounts of ionic liquids to enhance ultrasound-assisted extraction of lipids content from green microalgae. The findings suggest that the addition of ILs improves ultrasonication by enhancing viscosity and reducing water surface tension, resulting in a more powerful acoustic cavitation process. Additionally, the yield of extracted lipids from green microalgae shows an incremental trend with increasing IL concentration.
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 degrees 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.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available