期刊
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
卷 87, 期 4, 页码 513-522出版社
WILEY
DOI: 10.1002/jctb.2739
关键词
electrochemical wastewater treatment; specific energy consumption; food industry wastewaters; statistical experimental design
类别
资金
- Project Management Unit of Akdeniz University, Turkey
BACKGROUND: Specific energy consumption (SEC) is an important factor in electrochemical treatment of wastewaters. SEC during electrochemical treatment of food industry wastewaters, specifically deproteinated whey wastewater (DWW), simulated sugar beet factory wastewater (SFW) and fruit juice factory wastewater (FJW), were investigated in this study. The effects of operational parameters applied voltage, and electrolyte and wastewater concentrations on SEC were assessed and optimized. RESULTS: SEC values were found in the range of 0.27-148.65, 0.94-375.76 and 0.20-636.40 kWh (kg COD)-1 for DWW, SFW and FJW, respectively, after 8 h of reaction. Operational parameters were optimized at 25. C through response surface methodology (RSM) where applied voltagewas kept in the range (2-12 V), wastewater concentration and CODremoval percent were maximized electrolyte concentration and SEC were minimized. Optimum conditions were estimated as 7.73 V applied voltage and 100% wastewater concentration in the presence of 27.11 g L-1 supporting electrolyte concentration to achieve 25.02, 67.74 and 43.10% COD removal for DWW, SFW and FJW with corresponding SEC values of 17.85, 22.79 and 80.47 kWh (kg COD)-1, respectively. CONCLUSIONS: Providing further research on the reduction of SEC values, application of electrochemical treatment to food industry wastewaters with non-biodegradable componentsmay become an alternative to conventionalmethods. (C) 2012 Society of Chemical Industry
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