Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7481405 | Journal of Environmental Management | 2016 | 6 Pages |
Abstract
A combination of persulfate and hydrogen peroxide (S2O82â/H2O2) was used to oxidizelandfill leachate. The reaction was performed under varying S2O82â/H2O2 ratio (g/g), S2O82â/H2O2 dosages (g/g), pH, and reaction time (minutes), so as to determine the optimum operational conditions. Results indicated that under optimum operational conditions (i.e. 120Â min of oxidation using a S2O82â/H2O2 ratio of 1Â g/1.47Â g at a persulfate and hydrogen peroxide dosage of 5.88Â g/50Â ml and8.63Â g/50Â ml respectively, at pH 11) removal of 81% COD and 83% NH3-N was achieved. In addition, the biodegradability (BOD5/COD ratio) of the leachate was improved from 0.09 to 0.17. The results obtained from the combined use of (S2O82â/H2O2) were compared with those obtained with sodium persulfate only, hydrogen peroxide only and sodium persulfate followed by hydrogen peroxide. The combined method (S2O82â/H2O2) achieved higher removal efficiencies for COD and NH3-N compared with the other methods using a single oxidizing agent. Additionally, the study has proved that the combination of S2O82â/H2O2 is more efficient than the sequential use of sodium persulfate followed by hydrogen peroxide in advanced oxidation processes aiming at treatingstabilizedlandfill leachate.
Related Topics
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Renewable Energy, Sustainability and the Environment
Authors
Ahmed H. Hilles, Salem S. Abu Amr, Rim A. Hussein, Olfat D. El-Sebaie, Anwaar I. Arafa,