DC Field | Value | Language |
---|---|---|
dc.contributor.author | Boo, Chanhee | ko |
dc.contributor.author | Qi, Heyang | ko |
dc.contributor.author | Billinge, Ian H. | ko |
dc.contributor.author | Shah, Kinnari M. | ko |
dc.contributor.author | Fan, Hanqing | ko |
dc.contributor.author | Yip, Ngai Yin | ko |
dc.date.accessioned | 2023-08-03T07:00:23Z | - |
dc.date.available | 2023-08-03T07:00:23Z | - |
dc.date.created | 2023-08-03 | - |
dc.date.created | 2023-08-03 | - |
dc.date.created | 2023-08-03 | - |
dc.date.issued | 2021-09 | - |
dc.identifier.citation | ACS ES&T ENGINEERING, v.1, no.9, pp.1351 - 1359 | - |
dc.identifier.uri | http://hdl.handle.net/10203/311078 | - |
dc.description.abstract | This study presents a novel technology, termed thermomorphic hydrophilicity base-induced precipitation (THBIP), for the effective removal of hardness ions from hypersaline brines with high-scaling propensity. THBIP utilizes thermoresponsive amine bases for the controlled precipitation of scaling constituents in alkaline conditions and subsequently uses low-temperature heat to trigger the phase separation of amine from aqueous solution, thus enabling reuse of the base. Three amines exhibiting distinct water solubility and basicity, specifically, diisopropylamine (DIPA), N-ethylcyclohexylamine (ECHA), and N,N-dimethylisopropylamine (DMIPA), were examined to identify the key parameters affecting THBIP performance. The amine bases were added to solutions containing hardness ions, Mg2+ or Ca2+, to induce the precipitation of hydroxide minerals (i.e., Mg(OH)(2(s)) and Ca(OH)(2(s))). All three amines are effective in increasing solution pH, leading to high Mg2+ removals of over 90%. But because Ca(OH)(2(s)) is relatively more soluble, only DIPA, which is both highly miscible in water and also the strongest base, obtained significant removal of Ca2+ ions (>33%). The observed precipitation and hardness removal are quantitatively consistent with the principles of aqueous chemistry. Using a simulated hypersaline feedwater (240 g/L total dissolved solids) of high-scaling propensity, THBIP with DIPA achieved similar to 80% hardness removal. Subsequent elevation of the temperature from 15 to 70 degrees C triggered demixing of the thermoresponsive base from the aqueous solution, to enable liquid-liquid separation for amine reuse. The study demonstrates the proof-of-concept of using thermomorphic hydrophilicity bases as an alternative strategy to effectively reduce the scaling potential of hypersaline brines. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Thermomorphic Hydrophilicity Base-Induced Precipitation for Effective Descaling of Hypersaline Brines | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 1 | - |
dc.citation.issue | 9 | - |
dc.citation.beginningpage | 1351 | - |
dc.citation.endingpage | 1359 | - |
dc.citation.publicationname | ACS ES&T ENGINEERING | - |
dc.identifier.doi | 10.1021/acsestengg.1c00160 | - |
dc.contributor.localauthor | Boo, Chanhee | - |
dc.contributor.nonIdAuthor | Qi, Heyang | - |
dc.contributor.nonIdAuthor | Billinge, Ian H. | - |
dc.contributor.nonIdAuthor | Shah, Kinnari M. | - |
dc.contributor.nonIdAuthor | Fan, Hanqing | - |
dc.contributor.nonIdAuthor | Yip, Ngai Yin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Descaling | - |
dc.subject.keywordAuthor | Thermomorphic hydrophilicity | - |
dc.subject.keywordAuthor | Amine base | - |
dc.subject.keywordAuthor | Hypersaline brine | - |
dc.subject.keywordAuthor | Precipitation | - |
dc.subject.keywordPlus | REVERSE-OSMOSIS | - |
dc.subject.keywordPlus | WASTE-WATER | - |
dc.subject.keywordPlus | SCALE FORMATION | - |
dc.subject.keywordPlus | SHALE GAS | - |
dc.subject.keywordPlus | HARDNESS REMOVAL | - |
dc.subject.keywordPlus | DESALINATION | - |
dc.subject.keywordPlus | MANAGEMENT | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | TECHNOLOGIES | - |
dc.subject.keywordPlus | CHALLENGES | - |
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