Ecology, Environment and Conservation Paper

Vol 22, Issue 4, 2016; Page No.(1709-1715)

EVALUATION OF THE EFFECT OF ADDING MGCL2 TO NITRATE REMOVAL FROM AQUEOUS SOLUTION BY ELECTRO-FENTON PROCESS

Ashraf Mazaheri Tehrani1, Mohammad Bagher Miranzadeh, Gholamreza Hoseindoost, Maghsoud Jafarinia, Hossein Akbari, Zeinab Khamooshi, Faezeh Karamali and Zahra Tavakoli

Abstract

Nitrate is one of dangerous pollutants in aquatic environments that leads to a lot of problems in environment and public health. The main problem about the presence Nitrogen compound in discharged wastewater into the environment is the oxygen consumption of water solution that is dangerous for aquatic and water ecosystem. The purpose of the current study is to compare the efficiency of Electro-Fenton process in the presence of magnesium chloride to remove Nitrate from the aqueous solution. This study was experimentally done on the efficiency of Electro-Fenton process to refine Nitrate and the effect of some factors such as concentration MgCl2, pH, electric current intensity, reaction time and Fe (ll) ratio to H2O2 was assessed. The results showed that the maximum efficiency to remove Nitrate was obtained in PH=3 and optimum concentration 30 mg/L. Also by increasing the reaction time and electric current intensity, the efficiency of Nitrate removing was meaningfully increased in Electro-Fenton process in the presence of MgCl2. Moreover, by increasing Fe+2/H2O2 ratio, the omission efficiency was increased in both processes. Generally, adding MgCl2 in Electro-Fenton process lead to efficiency increase. So that the omission efficiency in 2A electric current, the ratio of [Fe+2]/[H2O2]= 2, and after 90 min, 86.28% and in the presence of MgCl2 was obtained 98.72%. Generally, we can conclude that the Electro-Fenton singly has high efficiency to refine Nitrate but its efficiency is increased by adding Mgcl2.

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