Removal of NO3– from Drinking Water by Electrocoagulation – An Alternate Approach |
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| Authors: | Subramanyan Vasudevan Florence Epron Jothinathan Lakshmi Subbiah Ravichandran Swaminathan Mohan Ganapathy Sozhan |
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| Institution: | 1. Laboratoire de Catalyse en Chimie Organique, Universite de Poitiers, CNRS, Poitiers, France.;2. Central Electrochemical Research Institute (CSIR), Karaikudi, India. |
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| Abstract: | 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/dm2, 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. |
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| Keywords: | Adsorption kinetics Clean technology Electrocoagulation Isotherms NO3– removal |
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