Photochemically-assisted electrochemical degradation of landfill leachate

被引：67

作者：

Tauchert, Elias ^{[1
]}

Schneider, Silvana ^{[1
]}

Lopes de Morais, Josmaria ^{[1
]}

Peralta-Zamora, Patricio ^{[1
]}

机构：

[1] Univ Fed Parana, Dept Quim, Grp Desenvolvimento Tecn Avancadas Tratamento Res, TECNOTRATER, BR-81531990 Curitiba, Parana, Brazil

来源：

CHEMOSPHERE | 2006年 / 64卷 / 09期

关键词：

photoelectrochemical process; DSA electrode; indirect oxidation;

D O I：

10.1016/j.chemosphere.2005.12.064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, the treatment of landfill leachates by a photoelectrochemical procedure is reported. When applied to untreated leachates the photochemical system was significantly hindered on account of the characteristic dark coloration of the samples. At this condition the degradation process was essentially electrochemical permitting typical color and COD removal of about 50% and 20%, respectively. When a previous chemical precipitation process was applied aiming the elimination of colored species (mainly humic substances) the decolorization and COD removal was extended to 90% and 60%, respectively. Considering the extremely complex character of the leachates and its usual resistance to conventional degradation processes the result reported here attest the high potentiality of photoelectrochemical processes to remediation of recalcitrant residues. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1458 / 1463

页数：6

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