Iron-loaded Natural Clay as Heterogeneous Catalyst for Fenton-like Discoloration of Dyeing Wastewater

The clay-based Fe-bearing catalyst was successfully prepared through ion-exchange reaction and applied as heterogeneous catalyst for discoloration of acid fuchsine (AF) in an aqueous solution by Fenton-like action.Experimental results demonstrated that the AF discoloration ratios increased by increa...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2009, 30(10), , pp.2249-2252
Main Authors: Huan-Yan Xu, Xiu-Lan He, Ze Wu, Lian-Wei Shan, Wei-Dong Zhang
Format: Article
Language:English
Subjects:
화학
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Summary:The clay-based Fe-bearing catalyst was successfully prepared through ion-exchange reaction and applied as heterogeneous catalyst for discoloration of acid fuchsine (AF) in an aqueous solution by Fenton-like action.Experimental results demonstrated that the AF discoloration ratios increased by increasing Fe-loaded clay dosage and initial H2O2 concentration, and by decreasing the pH, respectively. The lower the initial AF concentration, the shorter the reaction time needed to achieve complete discoloration of AF. Comparative studies indicated that AF discoloration ratios were much higher in presence of Fe-loaded clay and H2O2 than those in presence of H2O2, raw natural clay or Fe-loaded clay only and raw natural clay and H2O2 jointly. After AF discoloration, there existed no new phases in the clay samples detected by XRD and no change in the clay crystal morphology observed by SEM. A mechanism proposed suggested adsorption and Fenton-like reaction were responsible for discoloration of AF. KCI Citation Count: 7
ISSN:0253-2964
1229-5949
DOI:10.5012/bkcs.2009.30.10.2249