Ion-selective solar crystallizer with rivulets
SCIE
SCOPUS
- Title
- Ion-selective solar crystallizer with rivulets
- Authors
- Choi, Jihun; Na, Jaehyun; Jeon, Sangmin
- Date Issued
- 2023-06
- Publisher
- CELL PRESS
- Abstract
- Bulk evaporation of brine is a sustainable method to obtain minerals with the inherent advantage of selective crystallization based on ion solubility differences, but it has a critical drawback of requiring a prolonged time period. In contrast, solar crystallizers based on interfacial evaporation can reduce the processing time, but their ion-selectivity may be limited due to insufficient re-dissolution and crystallization processes. This study presents the first-ever development of an ion-selective solar crystallizer featuring an asymmetrically corrugated structure (A-SC). The asymmetric mountain structure of A-SC creates V-shaped rivulets that facilitate solution transport, promoting not only evaporation but also the re-dissolution of salt formed on the mountain peaks. When A-SC was employed to evaporate a solution containing a mixture of Na+ and K+ ions, the evaporation rate was 1.51 kg/m2h and the relative concentration of Na+ to K+ in the crystallized salt was 4.45 times higher than that in the initial solution.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/122934
- DOI
- 10.1016/j.isci.2023.106926
- Article Type
- Article
- Citation
- iScience, vol. 26, no. 6, 2023-06
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