Copper, chromium and nickel removal from metal plating wastewater by electrocoagulation

被引:404
作者
Akbal, Feryal [1 ]
Camci, Selva [1 ]
机构
[1] Ondokuz Mayis Univ, Fac Engn, Dept Environm Engn, TR-55139 Kurupelit, Samsun, Turkey
关键词
Electrocoagulation; Metal plating wastewater; Copper; Chromium; Nickel; ENHANCED ULTRAFILTRATION; CHEMICAL PRECIPITATION; OPERATIONAL PARAMETERS; AQUEOUS-SOLUTIONS; HEAVY-METALS; WASTEWATERS; DECOLORIZATION; ELECTRODES; INDUSTRY; BIPOLAR;
D O I
10.1016/j.desal.2010.11.001
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Removal of copper (Cu), chromium (Cr) and nickel (Ni) from metal plating wastewater by electrocoagulation with iron and aluminum electrodes with monopolar configurations was investigated. The influence of electrode material, current density, wastewater pH and conductivity on removal performance was explored. The results showed that metal removal increased with increasing current density, pH and conductivity. The efficiency of different electrode materials (iron, aluminum) was compared. The results indicated that electrocoagulation with an Fe-Al electrode pair was very efficient and was able to achieve 100% Cu, 100% Cr and 100% Ni removal at an electrocoagulation time of 20 min, a current density of 10 mA/cm(2) and a pH of 3.0. Corresponding energy and electrode consumptions were determined as 10.07 kWh/m(3) and 1.08 kg/m(3), respectively. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:214 / 222
页数:9
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