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Ultrasound enhanced heterogeneous activation of peroxydisulfate by bimetallic Fe-Co/GAC catalyst for the degradation of Acid Orange 7 in water.
- Source :
-
Journal of Environmental Sciences (Elsevier) . Jun2014, Vol. 26 Issue 6, p1267-1273. 7p. - Publication Year :
- 2014
-
Abstract
- Bimetallic Fe-Co/GAC (granular activated carbon) was prepared and used as heterogeneous catalyst in the ultrasound enhanced heterogeneous activation of peroxydisulfate (PS, S 2 O 2− 8 ) process. The effect of initial pH, PS concentration, catalyst addition and stirring rate on the decolorization of Acid Orange 7 (AO7) was investigated. The results showed that the decolorization efficiency increased with an increase in PS concentration from 0.3 to 0.5 g/L and an increase in catalyst amount from 0.5 to 0.8 g/L. But further increase in PS concentration and catalyst addition would result in an unpronounced increase in decolorization efficiency. In the range of 300 to 900 r/min, stirring rate had little effect on AO7 decolorization. The catalyst stability was evaluated by measuring decolorization efficiency for four successive cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10010742
- Volume :
- 26
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Sciences (Elsevier)
- Publication Type :
- Academic Journal
- Accession number :
- 98770220
- Full Text :
- https://doi.org/10.1016/S1001-0742(13)60598-7