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Lower Critical Solution Temperature (LCST) Phase Separation of Glycol Ethers for Forward Osmotic Control
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 이연 | - |
dc.contributor.author | 다이치 | - |
dc.date.accessioned | 2017-07-27T02:18:51Z | - |
dc.date.available | 2017-07-27T02:18:51Z | - |
dc.date.issued | 2014-02 | - |
dc.identifier.other | 000000018030 | - |
dc.identifier.uri | https://hdl.handle.net/10371/134899 | - |
dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 화학부(생화학전공), 2014. 2. 이연. | - |
dc.description.abstract | Lower critical solution temperature (LCST) phase transition of glycol ether (GE)/water mixtures induces abrupt change of osmotic pressure driven by mild temperature change. The temperature-controlled osmotic change was applied for the forward osmotic (FO) desalination. Among evaluated three GEs, di(ethylene glycol) n-hexyl ether (DEH) was selected as a potential FO draw solute. A DEH/water mixture with a high osmotic pressure could draw fresh water from a high-salt feed solution such as seawater through a semipermeable membrane at around 10 °C. The water-drawn DEH/water mixture was phase-separated into a water-rich phase and a DEH-rich phase at around 30 °C. The water-rich phase with a much reduced osmotic pressure released water into a low-salt solution, and the DEH-rich phase was recovered into the initial DEH/water mixture. The phase separation behaviour, the residual GEs concentration at the water-rich phase, the osmotic pressure of the DEH/water mixture, and the osmotic flux between DEH/water mixture and salt solutions were carefully analysed for FO desalination. The liquid-liquid phase separation of the GE/water mixture driven by the mild temperature change between 10 °C and 30 °C is very attractive for the development of an ideal draw solute for future practical FO desalination. | - |
dc.description.tableofcontents | Abstract
Introduction Materials and Methods Results and Discussion Conclusions References Tables Figures Abstract in Korean | - |
dc.format | application/pdf | - |
dc.format.extent | 1544124 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | thermo-sensitive materials | - |
dc.subject | lower critical solution temperature (LCST) | - |
dc.subject | glycol ether | - |
dc.subject | phase diagram | - |
dc.subject | desalination | - |
dc.subject.ddc | 540 | - |
dc.title | Lower Critical Solution Temperature (LCST) Phase Separation of Glycol Ethers for Forward Osmotic Control | - |
dc.type | Thesis | - |
dc.contributor.AlternativeAuthor | Daichi Nakayama | - |
dc.description.degree | Master | - |
dc.citation.pages | 33 | - |
dc.contributor.affiliation | 자연과학대학 화학부 | - |
dc.date.awarded | 2014-02 | - |
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