ELECTROCHEMICAL REMOVAL OF NITRATE FROM WASTEWATER USING COPPER CATHODE
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ŠŠ°ŃŃŠ¼
2015
ŠŃŃŠ¾ŃŠø
ŠŠ°ŃŠ»Š¾Š² Š¶ŃŃŠ½Š°Š»Š°
ŠŃŃŠ½Š°Š» ISSN
ŠŠ°ŃŠ»Š¾Š² Š²Š¾Š»ŃŠ¼ŠµŠ½Š°
ŠŠ·Š“Š°Š²Š°Ń
Scibulcom Ltd., Bulgaria
ŠŠæŃŃŃŠ°ŠŗŃ
Water pollution by nitrates is due to increased use of synthetic nitrogen fertilisers, livestock manure in intensive agriculture, and industrial and municipal effluent discharge. This pollution represents a high risk for aquatic systems and human health. This is why the World Health Organisation (WHO) recommended a maximum limit of 50 mg lā1 for nitrate concentration (NO3ā) in drinking water. The purpose of this study is nitrate removal from wastewater by electrochemical reduction using copper (Cu) cathode and platinised titanium (Pt/Ti) anode. Copper has very good electrical properties and a very high electrocatalytic activity for electrochemical cathodic reduction of nitrate. Galvanostatic batch electrolysis of synthetic nitrate wastewaters have been carried out in an undivided electrochemical cell using different nitrate and supporting electrolytes concentrations and current densities as a function of electrolysis time. The influence of these variables on removal efficiency of nitrate, current efficiency and energy consumption was reported.
ŠŠæŠøŃ
ŠŃŃŃŠ½Šµ ŃŠµŃŠø
wastewater, nitrate, electrochemical removal, copper