ELECTROREMEDIATION OF HEAVY METALS IN SEWAGE SLUDGE

被引：21
|
作者：
Elicker, C. [1 ]
Sanches Filho, P. J. [1 ]
Castagno, K. R. L. [1 ]
机构：
[1] Inst Fed Sul Rio Grandense IFSul, Dept Management & Environm Sanitat, BR-96015360 Pelotas, RS, Brazil
来源：
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 31卷 / 02期
关键词：
Metals; Sewage sludge; Electrokinetic remediation; Atomic absorption; ELECTROKINETIC REMEDIATION; REMOVAL; SOILS; SEDIMENTS;
D O I：
10.1590/0104-6632.20140312s00002394
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
This paper presents the application of electrokinetic remediation in the treatment of sludge in a sewage treatment station. The study consisted of, in a first step, the characterization of physicochemical parameters of sludge and, in a second step, the implementation of the electrokinetic remediation technique. The concentrations of Cu, Cr, Pb and Zn in sludge samples, before and after the experiment, were determined by atomic absorption spectroscopy. After 40 hours of experiment, considering an electrolyte flow-rate of 1.34 L. h(-1) at a voltage of 20 V, the removal rate of all the metals accompanied was over 50%; the highest removal efficiency was for Pb, with 72.49%. The results show the feasibility of using the electrochemical technique of electrokinetic remediation for metal removal from a sludge sewage treatment station.
引用
收藏
页码：365 / 371
页数：7
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