Removal of NO3- from Drinking Water by Electrocoagulation An Alternate Approach

被引：52
|
作者：
Vasudevan, Subramanyan [1 ]
Epron, Florence [2 ]
Lakshmi, Jothinathan [1 ]
Ravichandran, Subbiah [1 ]
Mohan, Swaminathan [1 ]
Sozhan, Ganapathy [1 ]
机构：
[1] Cent Electrochem Res Inst CSIR, Karaikkudi 630006, Tamil Nadu, India
[2] Univ Poitiers, CNRS, Catalyse Chim Organ Lab, Poitiers, France
来源：
CLEAN-SOIL AIR WATER | 2010年 / 38卷 / 03期
关键词：
Adsorption kinetics; Clean technology; Electrocoagulation; Isotherms; NO3-; removal; EFFICIENT ELECTROCHEMICAL REDUCTION; INDUSTRIAL SOLID-WASTE; AQUEOUS-SOLUTION; NITRATE; ADSORPTION; PHOSPHATE; ION; NITROGEN; AMMONIA; CATHODE;
D O I：
10.1002/clen.200900226
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The present study provides an electrocoagulation method, for the removal of NO3- from drinking water using magnesium as the anode and cathode. The experiments are carried out as a function of pH, temperature, and current density. The results show that the maximum removal efficiency of 95.8% was achieved at a current density of 0.25 A/dm(2), at a pH of 7.0. The adsorption of NO3- preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of the adsorbed molecules. The adsorption process follows a second-order kinetics model. Thermodynamic studies show that the adsorption was exothermic and spontaneous in nature.
引用
收藏
页码：225 / 229
页数：5
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