en بهداشت محیط زیست Environmental Health پژوهشي Original Article <p style="text-align: justify;"><font face="Times New Roman"><i><b>Background and purpose: </b></i></font><font face="Times New Roman">Textile industries are among the most polluting industries </font><font face="Times New Roman">regarding the volume and the complexity of treatment of its effluents discharge. This study</font></p> <p style="text-align: justify;"><font face="Times New Roman">investigated the efficiency of electrocoagulation process using aluminum electrodes in basic red </font><font face="Times New Roman">18 dye removal from aqueous solutions.</font></p> <p style="text-align: justify;"><font face="Times New Roman"><i><b>Materials and Methods: </b></i></font><font face="Times New Roman">This study was performed in a bipolar batch reactor with six aluminum </font><font face="Times New Roman">electrodes connected in parallel. Several important parameters, such as initial pH of solution, </font><font face="Times New Roman">initial dye concentration, applied voltage; conductivity and reaction time were studied in an </font><font face="Times New Roman">attempt to achieve higher removal efficiency.</font></p> <p style="text-align: justify;"><font face="Times New Roman"><i><b>Results: </b></i></font><font face="Times New Roman">The electrochemical technique showed satisfactory dye removal efficiency and reliable </font><font face="Times New Roman">performance in treating of basic red 18. The maximum efficiency of dye removal which was </font><font face="Times New Roman">obtained in voltage of 50 V, reaction time of 60 min, initial concentration 50 mg/L, conductivity </font><font face="Times New Roman">3000 &mu;S/cm and pH 7 was equal to 97.7%. Dye removal efficiency was increased accordance to </font><font face="Times New Roman">increase of applied voltage and in contrast electrode and energy consumption was increased </font><font face="Times New Roman">simultaneously.</font></p> <p style="text-align: justify;"><font face="Times New Roman"><i><b>Conclusion: </b></i></font><font face="Times New Roman">As a conclusion, the method was found to be highly efficient and relatively fast </font><font face="Times New Roman">compared to conventional existing techniques for dye removal from aqueous solutions.</font></p> Textile Wastewater, Electrocoagulation, Aluminum Electrodes, Basic Red 18 16 29 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-364-2&slc_lang=en&sid=1 Edris Bazrafshan 10031947532846004083 10031947532846004083 No Health Promotion Research Center and Department of Environmental Health, School of Public Health Amir Hossein Mahvi 10031947532846004084 10031947532846004084 No School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mohammad ali Zazouli zazoli49@yahoo.com 10031947532846004085 10031947532846004085 Yes Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran.