Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes

Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes Publisher Pubmed

Esfandyari Y¹ ; Mahdavi Y¹ ; Seyedsalehi M² ; Hoseini M³ ; Safari GH⁴ ; Ghozikali MG⁵ ; Kamani H⁶ ; Jaafari J⁷

Show Affiliations

1. Department of Environmental Health Engineering, Health Sciences Research Center, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
2. Department of Environmental Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
3. Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, IR, Iran
4. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
5. Environmental Health Department of East Azerbaijan Province Health Center, Tabriz University of Medical Sciences, Tabriz, Iran
6. Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
7. Department of Environmental Health, School of Public Health, Guilan University of Medical Sciences, Rasht, Iran

Source: Environmental Science and Pollution Research Published:2015

Abstract

Olive mill wastewater is considered as one of the most polluting effluents of the food industry and constitutes a source of important environmental problems. In this study, the removal of pollutants (chemical oxygen demand (COD), biochemical oxygen demand (BOD5), polyphenols, turbidity, color, total suspended solids (TSS), and oil and grease) from olive oil mill processing wastewater by peroxi-electrocoagulation/electrooxidation-electroflotation process with bipolar aluminum electrodes was evaluated using a pilot continuous reactor. In the electrochemical unit, aluminum (Al), stainless steel, and RuO2/Ti plates were used. The effects of pH, hydrogen peroxide doses, current density, NaCl concentrations, and reaction times were studied. Under optimal conditions of pH 4, current density of 40 mA/m2, 1000 mg/L H2O2, 1 g/L NaCl, and 30-min reaction time, the peroxi-electrochemical method yielded very effective removal of organic pollution from the olive mill wastewater diluted four times. The treatment process reduced COD by 96 %, BOD5 by 93.6 %, total, polyphenols by 94.4 %, color by 91.4 %, turbidity by 88.7, suspended solids by 97 % and oil and grease by 97.1 %. The biodegradability index (BOD5/COD) increased from 0.29 to 0.46. Therefore, the peroxi-electrocoagulation/electrooxidation-electroflotation process is considered as an effective and feasible process for pre-treating olive mill wastewater, making possible a post-treatment of the effluent in a biological system. © 2014, Springer-Verlag Berlin Heidelberg.

Related Docs

1. Heavy Metals Removal From Aqueous Environments by Electrocoagulation Process - a Systematic Review, Journal of Environmental Health Science and Engineering (2015)

Style	Citing Format
MLA	Esfandyari Y, et al.. "Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes." Environmental Science and Pollution Research, vol. 22, no. 8, 2015, pp. 6288-6297.
APA	Esfandyari Y, Mahdavi Y, Seyedsalehi M, Hoseini M, Safari GH, Ghozikali MG, Kamani H, Jaafari J (2015). Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes. Environmental Science and Pollution Research, 22(8), 6288-6297.
Chicago	Esfandyari Y, Mahdavi Y, Seyedsalehi M, Hoseini M, Safari GH, Ghozikali MG, Kamani H, Jaafari J. "Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes." Environmental Science and Pollution Research 22, no. 8 (2015): 6288-6297.
Harvard	Esfandyari Y et al. (2015) 'Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes', Environmental Science and Pollution Research, 22(8), pp. 6288-6297.
Vancouver	Esfandyari Y, Mahdavi Y, Seyedsalehi M, Hoseini M, Safari GH, Ghozikali MG, et al.. Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes. Environmental Science and Pollution Research. 2015;22(8):6288-6297.
BibTex	@article{ author = {Esfandyari Y and Mahdavi Y and Seyedsalehi M and Hoseini M and Safari GH and Ghozikali MG and Kamani H and Jaafari J}, title = {Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes}, journal = {Environmental Science and Pollution Research}, volume = {22}, number = {8}, pages = {6288-6297}, year = {2015} }
RIS	TY - JOUR AU - Esfandyari Y AU - Mahdavi Y AU - Seyedsalehi M AU - Hoseini M AU - Safari GH AU - Ghozikali MG AU - Kamani H AU - Jaafari J TI - Degradation and Biodegradability Improvement of the Olive Mill Wastewater by Peroxi-Electrocoagulation/Electrooxidation-Electroflotation Process With Bipolar Aluminum Electrodes JO - Environmental Science and Pollution Research VL - 22 IS - 8 SP - 6288 EP - 6297 PY - 2015 ER -

Science Communicator Platform

Authors

Authors Affiliations

Abstract