Continuous electrocoagulation of cheese whey wastewater: an application of Response Surface Methodology
Autor: | Nihal Erginel, S. Eren Ocal, Ayse Kandemir, Umran Tezcan Un |
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Přispěvatelé: | Anadolu Üniversitesi, Mühendislik Fakültesi, Çevre Mühendisliği Bölümü, Erginel, Nihal, Ocal, S. Eren |
Rok vydání: | 2014 |
Předmět: |
Environmental Engineering
Materials science Coefficient of determination Whey Wastewater medicine.medical_treatment Management Monitoring Policy and Law Wastewater Waste Disposal Fluid Electrocoagulation Iron Electrode Water Purification Cheese medicine Humans Response surface methodology Waste Management and Disposal Chromatography Chemical oxygen demand General Medicine Continuous mode Hydrogen-Ion Concentration Pulp and paper industry Milk Proteins Anode Response Surface Methodology Current density Water Pollutants Chemical |
Zdroj: | Journal of environmental management. 146 |
ISSN: | 1095-8630 |
Popis: | WOS: 000343614400027 PubMed ID: 25178530 In this study, treatment of cheese whey wastewater was performed using a uniquely-designed continuous electrocoagulation reactor, not previously encountered in the literature. An iron horizontal rotating screw type anode was used in the continuous mode. An empirical model, in terms of effective operational factors, such as current density (40, 50, 60 mA/cm(2)), pH (3, 5, 7) and retention time (20, 40, 60 min), was developed through Response Surface Methodology. An optimal region characterized by low values of Chemical Oxygen Demand (COD) was determined. As a result of experiments, a linear effect in the removal efficiency of COD was obtained for current density and retention time, while the initial pH of the wastewater was found to have a quadratic effect in the removal efficiency of COD. The best fit nonlinear mathematical model, with a coefficient of determination value (R-2) of 85%, was defined. An initial COD concentration of 15.500 mg/L was reduced to 2112 mg/L with a removal efficiency of 86.4%. In conclusion, it can be said that electrocoagulation was successfully applied for the treatment of cheese whey wastewater Anadolu University Research Fund [1101 F007] This study was financially supported by the Anadolu University Research Fund (Project No:1101 F007). |
Databáze: | OpenAIRE |
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