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Liquid phase mineralization of gel‐type anion exchange resin by a hybrid process of Fenton dissolution followed by sonication and wet air oxidation
Author(s) -
Gunale T. L.,
Mahajani V.V.,
Wattal P. K.,
Srinivas C.
Publication year - 2008
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.214
Subject(s) - sonication , hydrogen peroxide , dissolution , chemistry , wet oxidation , ion exchange resin , mineralization (soil science) , catalysis , ion exchange , copper , chemical engineering , nuclear chemistry , inorganic chemistry , ion , chromatography , organic chemistry , nitrogen , engineering
A hybrid process of Fenton dissolution followed by sonication and wet air oxidation (WAO), has been demonstrated to mineralize strongly basic anion exchange resin (gel type). The solid anion exchange resin beads could be dissolved in water by Fenton process wherein the copper‐catalyzed hydrogen peroxide (H 2 O 2 ) reaction makes the resin hydrophilic by the disintegration of polymer matrix. Sonication of the dissolved resin thus obtained made the waste stream more amenable to WAO. Parameters for Fenton dissolution and sonication were studied to aid effective mineralization by WAO. The kinetic studies of WAO were performed using copper sulfate (CuSO 4 ) as the homogeneous catalyst, in the temperature range of 483–523 K. It is thus possible to address the disposal of solid ion exchange resin by the hybrid process, described here. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.