KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Safty, Enviroment and Energy
Adsorption of 1,2-Dichloroethane in Water Using Temperature-sensitive Polymeric Hydrogel and Its Mechanism
Hideki YamamotoNoriyuki HeyamotoYuko TakamiJunji Shibata
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2001 Volume 27 Issue 6 Pages 786-791

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Abstract

Polyvinylalcohol (PVA) hydrogel was found to be a temperature-sensitive polymeric gel, whose volume and the surface properties changed in the temperature range from 275 K to 310 K.
In this study, a method was proposed for removal of 1,2-dichloroethane from water by adsorption onto a temperature-sensitive PVA polymeric hydrogel. The amount of adsorbed organic compound increased remarkably at temperatures higher than about 310 K, and it was confirmed that the polymeric hydrogel could adsorb and desorb the organic compound according to the temperature change between 323 K and 298 K. It was also observed that the PVA polymeric hydrogel was effective for the removal of an extremely small amount of toxic organic compound in waste water and was repeatedly usable as an adsorbent. The mechanism of the adsorption of 1,2-dichloroethane on PVA polymeric hydrogel could be well explained using the adsorption rate equation based on diffusion in the polymeric hydrogel as the rate determining step.

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© 2001 by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
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