1. bookVolume 14 (2012): Issue 3 (October 2012)
Journal Details
License
Format
Journal
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English
access type Open Access

Electrocoagulation of model wastewater using aluminum electrodes

Journal Details
License
Format
Journal
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English

Electrocoagulation makes an alternative method to chemical coagulation. This paper presents the results obtained during the electrocoagulation of the model wastewater using aluminum electrodes. The wastewater was treated by means of chronopotentiometric electrocoagulation process in a static system, at the constant current I = 0.3 A; therefore higher doses of electrocoagulant required longer electrocoagulation time. Changes in zeta potential, pH, turbidity, chemical oxygen demand (COD), suspended solids and total phosphorus concentrations in the treated wastewater were determined. A new method for determining the optimal dosage of the aluminum electrocoagulant was proposed through application of the third degree polynomial function rather than the parabolic equation. An increase in the electrocoagulant dose raised the share of sweep fl occulation in the studied treatment process, resulting in the effective removal over 90% of phosphorus compounds from the system.

Keywords

1. Smoczyński, L., Bukowski, Z., Wardzyńska, R., Załęska- -Chróst, N. & Dłużyńska, K. (2009). Simulation of coagulation, fl occulation and sedimentation. Water Environ. Res. 81 (4), 348-356. DOI:10.2175/106143008X357174.Search in Google Scholar

2. Smoczyński, L., Mróz, P., Wardzyńska, R., Załęska- -Chróst, B. & Dłużyńska, K. (2009). Computer Simulation of Flocculation of Suspended Solids. Chem. Eng. J. 152, 146-150. DOI:10.1016/j.cej.2009.04.020.Search in Google Scholar

3. Duan, J. & Gregory, J. (2003). Coagulation by hydrolysing metal salts. J. Colloid and Interf. Sci. 100-102, 475-502. DOI:10.1016/S0001-8686(02)00067-2.Search in Google Scholar

4. Kobya, M., Sentruk, E. & Bayramoglu, M. (2006). Treatment of poultry slaughterhouse wastewaters by electrocoagulation. J. Hazard. Mater. B133, 172−176. DOI:10.1016/j. jhazmat.2005.10.007.Search in Google Scholar

5. Armirtharajah, A. & Mills, M.K. (1982). Rapid-mix design for mechanism of Alum coagulation. J. Am. Water Work As. 74 (4), 210-216.Search in Google Scholar

6. Rodrigo, M.A., Canizares, P., Buitron, C. & Saez, C. (2010). Electrochemical technologies for the regeneration of urban wastewater. Electrochim. Acta 55, 8160-8164. DOI:10.1016/j. electacta.2010.01.053.Search in Google Scholar

7. Mollah, M.Y.A., Gomes, J.A.G., Das, K.K. & Cocke, D.L. (2010). Electrochemical treatment of Orange II dye solution - Use of aluminum sacrifi cial electrodes and fl oc characterization. J. Hazard. Mater. 174, 851-858. DOI:10.1016/j. jhazmat.2009.09.131.Search in Google Scholar

8. Kannadasan, T., Sivakumar, V., Ahmed Basha, C., Arun, V. P., Senthilkumar, K. & Kannan, L. (2011). COD reduction studies of paper mill effl uent using a batch recirculation electrochemical method. Pol. J. Chem. Tech. 13(3), 37-41. DOI 10.2478/v10026-011-0034-5.Search in Google Scholar

9. Zaied, M. & Bellakhal, N. (2009). Electrocoagulation treatment of black liquor from paper industry. J. Hazard. Mater. 163, 995-1000. DOI:10.1016/j.jhazmat.2008.07.115.Search in Google Scholar

10. Tchamango, S., Nanseu-Njiki, C.P., Ngameni, E., Hadjiev, D. & Darchen, A. (2010). Treatment of Dairy effl uents by electrocoagulation using aluminium electrodes. Sci. Total Environ. 408, 947-952. DOI:10.1016/j.scitotenv.2009.10.02.Search in Google Scholar

11. Groterud, O. & Smoczyński, L. (1986). Phosphorus removal from water by electrolysis. Water Res. 20(5), 667-669. DOI:10.1016/0043-1354(86)90032-1.Search in Google Scholar

12. Chen, X., Chen, G. & Yue, P.L. (2000). Electrocoagulation and electrofl otation of restaurant wastewaters. J. Environ. Eng. 126, 858-863. DOI:10.1061/(ASCE)0733-9372(2000)126:9(858)Search in Google Scholar

13. Kobya, M. & Delipinar, S. (2008). Treatment of the baker’s yeast wastewater by electrocoagulation. J. Hazard.Mater. 154(1-3), 1133-1140. DOI:10.1016/j.jhazmat.2007.11.019.Search in Google Scholar

14. Roa-Morales, G., Campos-Medina, E., Aguilera-Cotero, L., Bilyeu, B. & Barrera-Diaz, C. (2006). Aluminum electrocoagulation with peroxide applied to wastewater from pasta and cookie process. Sep. Purif. Technol. 54(1), 124-129. DOI:10.1016/j.seppur.2006.08.025.Search in Google Scholar

15. Gurses, A., Yalcin, M. & Dogan, C. (2002). Electrocoagulation of some reactive dyes: a statistical investigation of some electrochemical variables. Waste Manage. 22, 491-499. DOI:10.1016/S0956-053X(02)00015-6.Search in Google Scholar

16. Holt, P.K., Barton, G.W., Wark, M. & Mitchell, C.A. (2002). Quantitative comparison between chemical dosing and electrocoagulation. Colloids Surf. 211, 233-248. DOI:10.1016/ S0927-7757(02)00285-6.Search in Google Scholar

17. Jiang, J.Q. & Lloyd, B. (2002). Progress in the development and use of ferrate(VI) salt as an oxidant and coagulant for water and wastewater treatment. Water Res. 36 (6), 1397-1408. DOI:10.1016/S0043-1354(01)00358-X. Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo