Use of EAF dust as heterogeneous catalyst in Fenton oxidation of PCP contaminated wastewaters [An article from: Journal of Hazardous Materials]

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About Use Of EAF Dust As Heterogeneous Catalyst In Fenton

This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: In this study, chemical oxidation tests using H"2O"2 were performed on a solution contaminated with 100mgl^-^1 of pentachlorophenol (PCP). The effectiveness of electric arc furnace dust and hematite as heterogeneous catalysts was evaluated. Reactions were conducted at pH 2 for 24h. Either H"2O"2 stabilized with KH"2PO"4 or un-stabilized H"2O"2 was used. Total organic carbon (T.O.C.) removal and chloride release from PCP molecule were monitored. Results showed that the maximum removal yields for electric arc furnace (EAF) dust (49.2% T.O.C., 56.7% Cl) were achieved when H"2O"2:PCP ratio was 10:1 and Fe:H"2O"2=1:5 for unstabilized H"2O"2 and when H"2O"2:PCP=10:1 and Fe:H"2O"2=1:1 for stabilized H"2O"2 (48% T.O.C., 60.6% Cl). The maximum yield using hematite (45.2% T.O.C., 55.2% Cl) was obtained when H"2O"2:PCP ratio was 10:1 and Fe:H"2O"2 was 1:2. When EAF dust was used and Fe:H"2O"2>1:5, Cl release was higher than the one expected from T.O.C. removal.