NDLI: Temperature-swing adsorption of aromatic compounds in water using polyampholyte gel

Content Provider	Springer Nature Link
Author	Morisada, Shintaro Suzuki, Hiroko Emura, Saki Hirokawa, Yoshitsugu Naka, Yoshio
Copyright Year	2008
Abstract	The adsorption property of the polyampholyte gel composed of sodium styrene sulfate (SSS) and vinylbenzyl trimethylammonium chloride (VBTA) has been investigated with several hydrophobic aromatic compounds as adsorbate. Using the N-isopropylacrylamide (NIPA) gel, the corresponding experiments were also performed for comparison. At room temperature, the NIPA gel hardly adsorbed the aromatic compounds, while it adsorbed them at higher temperatures. As for the SSS-VBTA gel, the adsorption amounts of the polyaromatic compounds decreased with increasing temperature, while the adsorption amounts of the monoaromatic compounds were almost independent of temperature and smaller than those of the polyaromatic compounds. These results indicate that the aromatic rings in the SSS-VBTA gel may play an important role in the adsorption of the aromatic compounds. Also, it has been demonstrated that the SSS-VBTA gel can repeatedly adsorb bisphenol-A at room temperature and desorb it at higher temperature by the temperature-swing operation: this behavior is diametrically opposite to that of the NIPA gel. This shows that the SSS-VBTA gel is much more suitable for the adsorption removal of the hydrophobic aromatic compounds from very dilute aqueous solutions, because a vast amount of energy is required for heating a large amount of water when using the NIPA gel.
Starting Page	621
Ending Page	628
Page Count	8
File Format	PDF
ISSN	09295607
Journal	Adsorption
Volume Number	14
Issue Number	4-5
e-ISSN	15728757
Language	English
Publisher	Springer US
Publisher Date	2008-03-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polyampholyte gel Temperature-swing adsorption Aromatic compound Hydrophobic interaction Engineering Thermodynamics, Transport Phenomena Surfaces and Interfaces, Thin Films Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Surfaces and Interfaces

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