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Zhang X, Chen H, Wang Y, Gao X, Wang Z, Wang N, Zang D. Ultrasound induced grain refinement of crystallization in evaporative saline droplets. ULTRASONICS SONOCHEMISTRY 2024; 107:106938. [PMID: 38833999 PMCID: PMC11179072 DOI: 10.1016/j.ultsonch.2024.106938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/20/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
We investigate the effect of ultrasound on the evaporation and crystallization of sessile NaCl solution droplets which were positioned in traveling or standing wave ultrasound field. The experimental results indicated that the ultrasound field can significantly accelerate the evaporation rate of the sessile droplets and refine the crystal grains. By adjusting the distance between the sessile droplets and the ultrasound emitter, it is found that, in traveling wave ultrasound field, the sessile droplet evaporation time and the time for the appearance of NaCl grains exhibited a fluctuating increase as the droplet-emitter distance increased. While in the standing wave ultrasound, the sessile droplet evaporation rate increases with the increasing droplet-emitter distance. Overall, the traveling wave ultrasound field has a stronger effect on grain refinement of the sessile droplets than the standing wave ultrasound field. The grain refinement is attributed to the decrease of critical nucleation radius caused by ultrasound energy and the increase of the nucleation rate caused by the accelerated evaporation rate. In addition, the breakage of grains caused by ultrasonic cavitation would also lead to grain refinement.
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Affiliation(s)
- Xiaoqiang Zhang
- MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China; Shaanxi Liquid Physics Research Center, Xi'an 710129, China
| | - Hongyue Chen
- MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China; Shaanxi Liquid Physics Research Center, Xi'an 710129, China
| | - Yuhan Wang
- MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China; Shaanxi Liquid Physics Research Center, Xi'an 710129, China
| | - Xin Gao
- Nanjing Sonodrive Technology Co., Ltd., Nanjing 210034, China
| | - Zhijun Wang
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Nan Wang
- MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Duyang Zang
- MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China; Shaanxi Liquid Physics Research Center, Xi'an 710129, China.
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Amari S, Okude A, Kudo S, Takiyama H. Operation Strategy for Avoiding Oiling‐Out During the Anti‐Solvent Crystallization Based on Ternary Phase Diagram. ChemistrySelect 2022. [DOI: 10.1002/slct.202203181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shuntaro Amari
- Department of Chemical Engineering Tokyo University of Agriculture and Technology 2-24-16 Naka-cho Koganei Tokyo 184-8588 Japan
| | - Ai Okude
- Department of Chemical Engineering Tokyo University of Agriculture and Technology 2-24-16 Naka-cho Koganei Tokyo 184-8588 Japan
| | - Shoji Kudo
- Department of Chemical Engineering Tokyo University of Agriculture and Technology 2-24-16 Naka-cho Koganei Tokyo 184-8588 Japan
- Department of Applied Chemistry Chiba Institute of Technology 2-17-1 Tsudanuma Narashino Chiba 275-0016 JAPAN
| | - Hiroshi Takiyama
- Department of Chemical Engineering Tokyo University of Agriculture and Technology 2-24-16 Naka-cho Koganei Tokyo 184-8588 Japan
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