Electrochemical treatment of wastewater polluted by nitrate: selective reduction to N2 on Boron-Doped Diamond cathode

被引：25
作者：
Georgeaud, V. [1 ]
Diamand, A. [1 ]
Borrut, D. [2 ]
Grange, D. [3 ]
Coste, M. [1 ]
机构：
[1] Ctr Rech Eau, F-78600 Maisons Laffitte, France
[2] Ctr Rech Proprete & Energie, F-78520 Limay, France
[3] Tech Direct Veolia Water, F-94410 St Maurice, France
来源：
WATER SCIENCE AND TECHNOLOGY | 2011年 / 63卷 / 02期
关键词：
Boron-Doped Diamond (BDD); design of experiments; electro-reduction; nitrates; ELECTROCATALYTIC REDUCTION; CATALYSTS; NITROGEN; REMOVAL; COPPER; SILVER; IONS;
D O I：
10.2166/wst.2011.034
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Electrochemical tests of nitrate reduction on Boron-Doped Diamond cathode are investigated through a Design of Experiments (DOE) method. The results show good reduction of nitrate into almost exclusively N-2. In the studied domain, the best experimental conditions are high initial nitrate content, low acidic pH values and low working current densities. The application of DOE conclusions on an agro-industrial wastewater gives really satisfying results: final nitrate contents lower than 50 mg/L without nitrite or ammonium formation, and with low energy consumption (under 25 kWh/kgNO(3)).
引用
收藏
页码：206 / 212
页数：7
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