en Environmental Health, Sciences, and Engineering Environmental Health, Sciences, and Engineering پژوهشي Original Article <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><strong>Background:</strong> Phenol as an aromatic hydroxyl compound are considered as a priority pollutant.&nbsp; Because of their stability, solubility in water and high toxicity had health important.<br> <strong>Methods: </strong>In the present experimental study, electrocoagulation reactor by iron electrodes are used in the presence of hydrogen peroxide to phenol removing from aqueous solutions. Effects of variables including H₂O₂ dosage, reaction time, pH, current density and initial phenol concentration were evaluated to estimate the efficiency of the process.<br> <strong>Results:</strong> The results showed that pH and H₂O₂ have the most important role in the removal of phenol. Increasing of H₂O₂ concentrations from 0.0125 to 0.025 M increased removal efficiency from 74% to 100%. Maximum removal was achieved at pH=3. However, increasing the pH to 9 lead to reducing removal efficiency to 9.8%.&nbsp; Also, by increasing of current density removal efficiency was increased. But with increasing initial concentration of phenol removal efficiency was reduced.<br> <strong>Conclusion: </strong>Proxy-electrocoagulation process as an effective and robust process can be used for handling of phenol containing wastewater.</span></span></div> <br> <br> &nbsp; Proxy-Electrocoagulation, Phenol, Hydrogen peroxide, Water solution 212 219 http://jhehp.zums.ac.ir/browse.php?a_code=A-10-43-2&slc_lang=en&sid=1 Ali Assadi assadi@zums.ac.ir 100319475328460010034 100319475328460010034 Yes Department of Environmental Health Engineering, Zanjan University of Medical Sciences, Zanjan, Iran. Sevda Naseri naseri.sevda@yahoo.com 100319475328460010035 100319475328460010035 No Department of Environmental Health Engineering, Zanjan University of Medical Sciences, Zanjan, Iran. Mehran Mohammadian Fazli mhrnmoh@gmail.com 100319475328460010036 100319475328460010036 No Department of Environmental Health Engineering, Zanjan University of Medical Sciences, Zanjan, Iran.