Submitted: 30 Sep 2015
Revised: 01 Dec 2015
Accepted: 07 Dec 2015
First published online: 15 Oct 2017
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Avicenna J Environ Health Eng. 2015;2(2):4206-4206.
doi: 10.17795/ajehe-4206
  Abstract View: 139
  PDF Download: 101

Research Article

Monitoring of pH, Oxidation-Reduction Potential and Dissolved Oxygen to Improve the Performance of Dimethyl Phthalate Removal From Aqueous Solutions

Ali Reza Rahmani 1, Mohammad Taghi Samadi 1, Reza Shokoohi 1, Hassan Zolghadr Nasab 2 *

1 Department of Environmental Health Engineering, Research Center for Health Sciences, Faculty of Health, Hamadan University of Medical Sciences, Hamadan, IR Iran
2 Department of Environmental Health Engineering, Faculty of Public Health, Hamadan University of Medical Sciences, Hamadan, IR Iran
Corresponding author: Hassan Zolghadr Nasab, Department of Environmental Health Engineering, Faculty of Public Health, Hamadan University of Medical Sciences, Hamadan, IR Iran. Tel: +98-9163028450 Email: hassanzol@ymail.com

Article

Since the process of heterogeneous Fenton is more complex and dynamic than the common Fenton process, control and onlinemonitoring is entirely vital for optimum operation of this system. This study was aimed to investigate the effects of pH, oxidationreductionpotential (ORP) and dissolved oxygen (DO) variations on dimethyl phthalate (DMP) removal from aqueous solutions usingthe heterogeneous Fenton process with nano zero-valent iron (nZVI). Parameters affecting the process like contact time (5 - 120minutes), pH (2 - 10), H2O2 concentration (0.01 - 1 mmol/L) nZVI content (0.01 - 0.5 g/L) and initial DMP concentration (2 - 50 mg/L)were also studied. It was found that, at optimum amounts (pH = 4, H2O2 concentration = 0.1 mmol/L, nZVI = 0.05 g/L, initial DMPconcentration = 2 mg/L, and contact time = 60 minutes), approximately 98% of the pollutant was removed. This process could treatDMP well from aqueous environments and can be introduced as a cheap and effective method.
Copyright© 2016, Hamadan University of Medical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided theoriginal work is properly cited.
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