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

页码：7 / 14

页数：8

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