Separation of Azeotropic Mixture Acetone + Hexane by Using Polydimethylsiloxane Membrane.

Randová, A.; Bartovská, L.; Kačírková, Marie; Ledesma, Oscar Iván Hernández; Červenková Šťastná, Lucie; Izák, Pavel; Žitková, Andrea; Friess, K.

doi:https://dx.doi.org/10.1016/j.seppur.2016.06.061

Number of the records: 1

Separation of Azeotropic Mixture Acetone + Hexane by Using Polydimethylsiloxane Membrane.

1.

SYSNO ASEP	0460855
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Separation of Azeotropic Mixture Acetone + Hexane by Using Polydimethylsiloxane Membrane.
Author(s)	Randová, A. (CZ) Bartovská, L. (CZ) Kačírková, Marie (UCHP-M)_RID Ledesma, Oscar Iván Hernández (UCHP-M) Červenková Šťastná, Lucie (UCHP-M)_{RID, ORCID, SAI} Izák, Pavel (UCHP-M)_{RID, ORCID, SAI} Žitková, Andrea (UCHP-M)_{RID, ORCID, SAI} Friess, K. (CZ)
Source Title	Separation and Purification Technology. - : Elsevier - ISSN 1383-5866 Roč. 170, OCT 1 (2016), s. 256-263
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	azeotropic mixture ; PDMS membrane ; pervaporation
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	LD14094 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000381950300029
EID SCOPUS	84977268510
DOI	10.1016/j.seppur.2016.06.061
Annotation	We report on possibilities of separation of the azeotropic mixture of acetone + hexane via sorption and pervaporation techniques using polydimethylsiloxane (PDMS) membrane. Acetone + hexane mixtures were studied at the temperature of 25 °C over the whole concentration range. The equilibrium and preferential sorption experiment were performed. Furthermore, the original physicochemical properties of acetone + hexane mixtures such as the excess surface tensions were determined and correlated using the Redlich-Kister equation. Determined differences in hexane and acetone sorption in PDMS, as well as in Flory-Huggins interaction parameters, are consistent with the differences in Hildebrand solubility parameters of pure liquids compared to PDMS, i.e. hexane and PDMS have identical value (14.9) which corresponds to higher sorption and higher rate of interaction with PDMS exhibited by hexane compared to acetone with 19.6. The pervaporation experiments confirmed that PDMS is able to separate this liquid mixture at the azeotropic point composition.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2017

Number of the records: 1