期刊
CHEMICAL PHYSICS LETTERS
卷 764, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cplett.2020.138287
关键词
Organic exclusion; Hydrate growth; Carbon dioxide; Molecular dynamics; Magnetic resonance imaging
资金
- National Natural Science Foundation of China [52006024]
The study found that organic macromolecules cannot be trapped in the hydrate structure but instead form a concentration gradient of dissolved organic substances during hydrate formation. This demonstrates the potential of hydrate-based technology for organic wastewater treatment.
Inorganic substances and most organic compounds are typically excluded from crystalline hydrate structures. In this study, the phenomenon and mechanism of organic exclusions during hydrate formation were investigated using MD simulations and in-situ observations with an MRI experimental apparatus. The results showed that the organic macromolecules could not be trapped in the hydrate structure and formed a concentration gradient of dissolved organic substances from the growth front of the CO2 hydrate into the aqueous solution. This study demonstrates the hydrate-based technology would be a promising method for organic wastewater treatment.
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