The treatment of landfill leachate over Ni/Al2O3 by supercritical water oxidation

被引：51
|
作者：
Civan, Ferda [1 ]
Ozaltun, Demet H. [1 ]
Kipcak, Ekin [1 ]
Akgun, Mesut [1 ]
机构：
[1] Yildiz Tech Univ, Dept Chem Engn, TR-34210 Istanbul, Esenler, Turkey
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2015年 / 100卷
关键词：
Catalyst; Landfill leachate; Ni/Al2O3; Supercritical water oxidation; Treatment; WASTE-WATER; FENTON;
D O I：
10.1016/j.supflu.2015.02.018
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：7 / 14
页数：8
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