| Title: | Electrocoagulation efficiency of the tannery effluent treatment using aluminium electrodes |
| Author(s): | Espinoza-Quinones FR; Fornari MM; Modenes AN; Palacio SM; Trigueros DE; Borba FH; Kroumov AD; |
| Address: | "Department of Chemical Engineering-Post graduate program, West Parana State University, rua da faculdade 645, Jd. Santa Maria, Toledo PR, Brazil. f.espinoza@terra.com.br" |
| ISSN/ISBN: | 0273-1223 (Print) 0273-1223 (Linking) |
| Abstract: | "An electro-coagulation laboratory scale system using aluminium plates electrodes was studied for the removal of organic and inorganic pollutants as a by-product from leather finishing industrial process. A fractional factorial 2(3) experimental design was applied in order to obtain optimal values of the system state variables. The electro-coagulation (EC) process efficiency was based on the chemical oxygen demand (COD), turbidity, total suspended solid, total fixed solid, total volatile solid, and chemical element concentration values. Analysis of variance (ANOVA) for final pH, total fixed solid (TFS), turbidity and Ca concentration have confirmed the predicted models by the experimental design within a 95% confidence level. The reactor working conditions close to real effluent pH (7.6) and electrolysis time in the range 30-45 min were enough to achieve the cost effective reduction factors of organic and inorganic pollutants' concentrations. An appreciable improvement in COD removal efficiency was obtained for electro-coagulation treatment. Finally, the technical-economical analysis results have clearly shown that the electro-coagulation method is very promising for industrial application" |
| Keywords: | Aluminum/*chemistry Analysis of Variance Calcium/analysis Costs and Cost Analysis Electricity Electrochemical Techniques/economics/*methods Electrodes Electrolysis Hydrogen-Ion Concentration Iron/chemistry Kinetics Nephelometry and Turbidimetry *Tanning T; |
| Notes: | "MedlineEspinoza-Quinones, Fernando R Fornari, Marilda M T Modenes, Aparecido N Palacio, Soraya M Trigueros, Daniela E G Borba, Fernando H Kroumov, Alexander D eng Research Support, Non-U.S. Gov't England 2009/10/22 Water Sci Technol. 2009; 60(8):2173-85. doi: 10.2166/wst.2009.518" |
