Applicability of diamond electrode/anode to the electrochemical treatment of a real textile effluent

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• 作者：Carlos A. Martí ; nez-Huitle^a ; ^{carlosmh@quimica.ufrn.br} ; Elisama Vieira dos Santos^a ; Danyelle Medeiros de Araú ; jo^a ; Marco Panizza^b ; ^{marco.panizza@unige.it}
• 关键词：Electrochemical treatment ; Diamond electrode ; Real effluent ; Textile dyes ; Pre-treatment
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：2012
• 期刊代码：pca22_15726657
• 类别：ce
• 出版时间：1 June, 2012
• 卷：674
• 期：Complete
• 页码：103-107
• 文件大小：570 K

摘要

In this work, a real effluent discharged by Brazilian textile industry, has been electrochemically treated using boron doped diamond (BDD) anode for removing chemical oxygen demand (COD) and colour. Preliminary experiments were performed under real discharged effluent conditions (pH and conductivity) in order to verify the applicability of this treatment process. However, a partial elimination of COD and colour effluent were achieved, depending on applied current density (20, 40 and 60 mA cm^鈭?), respectively. Therefore, different set of experiments were carried out where an amount Na₂SO₄ was added in the real effluent; then, COD of textile effluent was satisfactorily reduced by employing different operational conditions (current density, temperature, Na₂SO₄ concentration, flow rate), reducing the time of depuration and consequently, the costs, confirming the potential efficiency of this textile effluent treatment.