Journal
JOURNAL OF SUPERCRITICAL FLUIDS
Volume 100, Issue -, Pages 7-14Publisher
ELSEVIER
DOI: 10.1016/j.supflu.2015.02.018
Keywords
Catalyst; Landfill leachate; Ni/Al2O3; Supercritical water oxidation; Treatment
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Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [104M214]
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This study presents the findings of our research regarding the catalytic treatment of landfill leachate over Ni/Al2O3 by supercritical water oxidation. Hydrogen peroxide was used as the oxygen source. The experiments were carried out at a constant pressure of 25 MPa, in the temperature range of 400-600 degrees C and the reaction time range of 30-150 s. The effects of temperature, reaction time, pressure, catalyst and oxidant use on the total organic carbon and total nitrogen contents of the liquid effluents were examined. As a result, it was seen that supercritical water oxidation was a very effective method for the treatment of landfill leachate. Treatment efficiencies up to 98.2% in terms of total organic carbon conversion were obtained. However nitrogen removal achieved about 57% in terms of total nitrogen conversion. (C) 2015 Elsevier B.V. All rights reserved.
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