DC Field | Value | Language |
---|---|---|
dc.contributor.author | Torrejos, Rey Eliseo C. | - |
dc.contributor.author | Nisola, Grace M. | - |
dc.contributor.author | Song, Ho Seong | - |
dc.contributor.author | HAN, JEONG WOO | - |
dc.contributor.author | Lawagon, Chosel P. | - |
dc.contributor.author | Seo, Jeong Gil | - |
dc.contributor.author | Koo, Sangho | - |
dc.contributor.author | Kim, Hern | - |
dc.contributor.author | Chung, Wook-Jin | - |
dc.date.accessioned | 2021-11-21T05:51:25Z | - |
dc.date.available | 2021-11-21T05:51:25Z | - |
dc.date.created | 2021-11-19 | - |
dc.date.issued | 2016-09 | - |
dc.identifier.issn | 0304-386X | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/107574 | - |
dc.description.abstract | A green liquid-liquid extraction (LLE) system was developed for the recovery of lithium (Li+) from sodium and potassium ions, which are typically present at high concentrations in seawater. Dibenzo-14-crown-4ether (DB14C4) was functionalized with a long lipophilic alkyl C18 chain and a pendent proton ionizable carboxylic acid group to obtain a lithium (Li+) carrier system (DB14C4-C18-COOH) with high Li+ extraction performance and good stability in the room temperature ionic liquid diluent, CYPHOSIL 109. The Li+ extraction efficiency of DB14C4-C18-COOH/CYPHOSIL 109 can be enhanced by increasing the solution pH and DB14C4-C18-COOH concentration. Further examination of extraction results reveal 1:1 coordination between DB14C4-C18-COOH and Li+ which was also supported by density functional theory calculations. At room temperature, the developed LLE system effectively extracted dilute Li+ from Na+ (selectivity alpha(++)(Li)(/Na) = 1954) and K+ (alpha K-++(Li)/ = 138). Kinetic and thermodynamic parameters were evaluated for optimum Li+ extraction conditions. Sequestered Li+ can be easily recovered from the LLE system using dilute hydrochloric acid. Results from recycling tests showed stable Li+ extraction performance hence it can be used for long term application. Overall results indicate the potential application of DB14C4-C18-COOH/CYPHOSIL 109 as a treatment step to recover Li+ from brine or seawater. (C) 2016 Elsevier B.V. All rights reserved. A green liquid-liquid extraction (LLE) system was developed for the recovery of lithium (Li+) from sodium and potassium ions, which are typically present at high concentrations in seawater. Dibenzo-14-crown-4ether (DB14C4) was functionalized with a long lipophilic alkyl C18 chain and a pendent proton ionizable carboxylic acid group to obtain a lithium (Li+) carrier system (DB14C4-C18-COOH) with high Li+ extraction performance and good stability in the room temperature ionic liquid diluent, CYPHOSIL 109. The Li+ extraction efficiency of DB14C4-C18-COOH/CYPHOSIL 109 can be enhanced by increasing the solution pH and DB14C4-C18-COOH concentration. Further examination of extraction results reveal 1:1 coordination between DB14C4-C18-COOH and Li+ which was also supported by density functional theory calculations. At room temperature, the developed LLE system effectively extracted dilute Li+ from Na+ (selectivity alpha(++)(Li)(/Na) = 1954) and K+ (alpha K-++(Li)/ = 138). Kinetic and thermodynamic parameters were evaluated for optimum Li+ extraction conditions. Sequestered Li+ can be easily recovered from the LLE system using dilute hydrochloric acid. Results from recycling tests showed stable Li+ extraction performance hence it can be used for long term application. Overall results indicate the potential application of DB14C4-C18-COOH/CYPHOSIL 109 as a treatment step to recover Li+ from brine or seawater. (C) 2016 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.relation.isPartOf | Hydrometallurgy | - |
dc.title | Liquid-liquid extraction of lithium using lipophilic dibenzo-14-crown-4 ether carboxylic acid in hydrophobic room temperature ionic liquid | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.hydromet.2016.05.010 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Hydrometallurgy, v.164, pp.362 - 371 | - |
dc.identifier.wosid | 000381949900045 | - |
dc.citation.endPage | 371 | - |
dc.citation.startPage | 362 | - |
dc.citation.title | Hydrometallurgy | - |
dc.citation.volume | 164 | - |
dc.contributor.affiliatedAuthor | HAN, JEONG WOO | - |
dc.identifier.scopusid | 2-s2.0-84973915561 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | EARTH-METAL-IONS | - |
dc.subject.keywordPlus | SOLVENT-EXTRACTION | - |
dc.subject.keywordPlus | ULTRASOFT PSEUDOPOTENTIALS | - |
dc.subject.keywordPlus | AQUEOUS-SOLUTIONS | - |
dc.subject.keywordPlus | CROWN-ETHERS | - |
dc.subject.keywordPlus | SELECTIVITY | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordAuthor | Lithium recovery | - |
dc.subject.keywordAuthor | Liquid-liquid extraction | - |
dc.subject.keywordAuthor | Crown ether | - |
dc.subject.keywordAuthor | Room temperature ionic liquid | - |
dc.subject.keywordAuthor | Density functional theory | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
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