Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/27334
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Blahušiak, M. | - |
dc.contributor.author | Marták, J. | - |
dc.contributor.author | Miranda, Fernando | - |
dc.contributor.author | Schlosser, Š. | - |
dc.contributor.author | Teixeira, J. A. | - |
dc.date.accessioned | 2013-12-20T23:31:52Z | - |
dc.date.available | 2013-12-20T23:31:52Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0366-6352 | por |
dc.identifier.uri | https://hdl.handle.net/1822/27334 | - |
dc.description.abstract | Solvent formulation is important in the optimization of the mass-transfer through supported liquid membranes (SLM) in pertraction and membrane extraction. Oleyl alcohol (OA) is frequently used as the solvent or diluent in the extraction of carboxylic acids. A disadvantage of OA is its relatively high viscosity of 28.32 mPa s at 25°C. This can be decreased by the application of a less viscous OA diluent, e.g. dodecane. The relationship between the ratio of the distribution coefficient of butyric acid (BA), D F, and the viscosity of OA-dodecane solvents, µ, as extraction and transport characteristics, and the overall mass-transfer coefficient, K p, through SLMs was analyzed. Dependence of the D F/µ ratio on the OA concentration showed a maximum at the OA concentration of 15 mass % to 30 mass %. The OA concentration dependence of K p for SLMs exhibited also a maximum at about 30 mass % and 20 mass % of OA at the BA concentration driving force of 0.12 kmol m−3 and 0.3 kmol m−3, respectively. Shifting of the maximum in K p dependences towards lower OA concentrations by increasing the BA concentration driving force is in agreement with the D F/µ ratio dependence. Using pure OA as the solvent or diluent is not preferable and a mixture of a low viscosity diluent with the OA concentration below 40 mass % should be used. The presented results show the potential of the D F/µ ratio in the screening and formulation of solvents in extraction and SLM optimization. | por |
dc.description.sponsorship | Support of the Slovak grant agency VEGA No. 1-1184-11 is acknowledged. | por |
dc.language.iso | eng | por |
dc.publisher | Versita | por |
dc.rights | openAccess | por |
dc.subject | Pertraction | por |
dc.subject | Extraction | por |
dc.subject | Butyric acid | por |
dc.subject | Oeyl alcohol | por |
dc.subject | Dodecane | por |
dc.subject | Supported liquid membrane | por |
dc.subject | Vscosity effect | por |
dc.subject | oleyl alcohol | por |
dc.subject | viscosity effect | por |
dc.title | Effect of viscosity of a liquid membrane containing oleyl alcohol on the pertraction of butyric acid | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 1560 | por |
oaire.citationEndPage | 1568 | por |
oaire.citationIssue | 12 | por |
oaire.citationTitle | Chemical Papers | por |
oaire.citationVolume | 67 | por |
dc.publisher.uri | Slovak Academic Press Ltd. | por |
dc.identifier.doi | 10.2478/s11696-013-0370-4 | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Chemical Papers | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |