aalto1 untyped-item.component.html
Nucleation Kinetics of Freeze Crystallization with Various Aqueous Solutions
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
Series
Chemical Engineering and Technology, Volume 46, issue 11, pp. 2316-2320
Abstract
The nucleation kinetics of ice were investigated with four different types of aqueous solutions. The studied aqueous solutions, i.e., sucrose solution, ionic liquid (IL) solution, pyrolysis oil extract (PO) solution, and acetone-1-butanol-ethanol (ABE) solution, were concentrated by batch suspension freeze crystallization. The nucleation kinetics were investigated using a temperature response method which results in data on nucleation rate per crystal. The obtained nucleation rate per crystal value can be used when dimensioning continuous crystallization processes: the nucleation rate per crystal is inversely proportional to the residence time in continuous crystallization. The subcooling degrees for different solutions were in the range of 0.33 °C to 1.89 °C. Aqueous sucrose solutions had the fastest nucleation kinetics. Ice crystallization from non-ideal aqueous [DBNH][OAc] ionic liquid solutions required higher subcooling degrees and the nucleation rates per crystal were higher as well. Nucleation of ice formed from aqueous pyrolysis oil extract and aqueous ABE solutions occurred at a lower subcooling degree and the obtained nucleation rate per crystal values were lower.
Description
The present work was financially supported by Finnish Foundation for Technology Promotion (Tekniikan edistämissäätiön (TES)), grant application number 8945 – year 2022. The authors would also like to express their gratitude to Anubhuti Bhatnagar for providing pyrolysis oil for suspension freeze crystallization experiments.
Other note
Citation
Osmanbegovic, N & Louhi-Kultanen, M 2023, 'Nucleation Kinetics of Freeze Crystallization with Various Aqueous Solutions', Chemical Engineering and Technology, vol. 46, no. 11, pp. 2316-2320. https://doi.org/10.1002/ceat.202300072