Removal of Chromium from Electroplating Industry Effluent Using Electrocoagulation
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 17, Issue 2
Abstract
Experiments were performed in batch mode of operation using iron electrodes to remove chromium from effluent by electrocoagulation, and the effect of various operating parameters was investigated. The maximum hexavalent chromium removal efficiency of 100% from a synthetic solution containing hexavalent chromium was obtained for an electrolysis time of 15 min at the optimum current density of , interelectrode distance 0.5 cm, and solution pH of 4. The real electroplating industry effluent was characterized using the standard diphenylcarbazide (DPC) method. A 100% chromium removal efficiency was obtained for both trivalent and hexavalent chromium, for an electrolysis time of 45 min at 4 pH. It was found that Cr(VI) is initially reduced to Cr(III) in the acidic medium. An increase in the pH of the effluent was also noticed in the acidic medium due to the generation of hydroxyl ions. Experiments were performed for the removal of chromium using ferric chloride as the coagulant, and it was found that electrocoagulation is more efficient and relatively faster compared to chemical coagulation.
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References
Acar, F. N., and Malkoc, E. (2004). “The removal of chromium (VI) from aqueous solutions by Fagus orientalis L.” Bioresour. Technol., 94(1), 13–15.
Adhoum, N., Monser, L., Bellakhal, N., and Belgaied, J. (2004). “Treatment of electroplating wastewater containing , and Cr(VI) by electro-coagulation.” J. Hazard. Mater., B112(3), 207–213.
Akbal, F., and Camci, S. (2011). “Copper, chromium and nickel removal from metal plating wastewater by electrocoagulation.” Desalin., 269(1–3), 214–222.
Anderson, R. A. (1997). “Chromium as an essential nutrient for humans.” Reg. Toxicol. Pharmacol., 26, S35–S41.
Chafi, M., Gourich, B., Essadki, A. H., Vial, C., and Fabregat, A. (2011). “Comparison of electrocoagulation using iron and aluminum electrodes with chemical coagulation for the removal of a highly soluble acid dye.” Desalin., 281, 285–292.
Costa, M. (2003). “Potential hazards of hexavalent chromate in our drinking water.” Toxicol. Appl. Pharm., 188(1), 1–5.
Dermentzis, K., Christoforidis, A., and Valsamidou, E. (2011a). “Removal of nickel, copper, zinc and chromium from synthetic and industrial wastewater by electrocoagulation.” Int. J. Environ. Sci., 1(5), 697–710.
Dermentzis, K., Christoforidis, A., Valsamidou, E., Lazaridou, A., and Kokkinos, N. (2011b). “Removal of hexavalent chromium from electroplating wastewater by electrocoagulation with iron electrodes.” Global NEST J., 13 (4), 412–418.
Golder, A. K., Chanda, A. K., Samanta, A. N., and Ray, S. (2007a). “Removal of Cr(VI) from aqueous solution: Electrocoagulation vs chemical coagulation.” Sep. Sci. Technol., 42(10), 2177–2193.
Golder, A. K., Samanta, A. N., and Ray, S. (2007b). “Trivalent chromium removal by electrocoagulation and characterization of the process sludge.” J. Chem. Technol. Biotechnol., 82(5), 496–503.
Golder, A. K., Samanta, A. N., and Ray, S. (2007c). “Removal of trivalent chromium by electrocoagulation.” Sep. Purif. Technol., 53(1) 33–41.
Gupta, V. K., andRastogi, A. (2009). “Biosorption of hexavalent chromium by raw and acid treated green alga Oedogonium hatei from aqueous solutions.” J. Hazard. Mater., 163(1), 396–402.
Heidmann, I., and Calmano, W. (2008a). “Removal of Cr(VI) from model wastewaters by electrocoagulation with Fe electrodes.” Sep. Purif. Technol., 61(1), 15–21.
Heidmann, I., and Calmano, W. (2008b). “Removal of Zn(II), Cu(II), Ni(II), Ag(I) and Cr(VI) present in aqueous solutions by aluminum electrocoagulation.” J. Hazard. Mater., 152(3), 934–941.
Keshmirizadeh, E., Yousefi, S., and Rofouei, M. K. (2011). “An investigation on the new operational parameter effective in Cr(VI) removal efficiency: A study on electrocoagulation by alternating pulse current.” J. Hazard. Mater., 190(1–3), 119–124.
Khandegar, V., and Saroha, A. K. (2012). “Electrochemical treatment of distillery spent wash using aluminum and iron electrodes.” Chinese J. Chem. Eng., 20(3), 439–443.
Khattar, J. I. S., Sarma, T. A., and Sharma, A. (2004). “Effect of stress on photosynthetic pigments and certain physiological processes in the cyanobacterium Anacystis nidulans and its chromium resistant strain.” J. Microbiol. Biotechnol., 14(6), 1211–1216.
Krishna, B. M., Murthy, U. N., Kumar, B. M., and Lokesh, K. S. (2010). “Electrochemical pretreatment of distillery wastewater using aluminum electrode.” J. Appl. Electrochem., 40(3), 663–667.
Merzouk, B., et al. (2011). “Effect of modification of textile wastewater composition on electrocoagulation efficiency.” Desalin., 275(1–3), 181–186.
Mollah, M. Y. A., Schennach, R., Parga, J. R., and Cocke, D. (2001). “Electrocoagulation (EC) science and applications.” J. Hazard. Mater., 84(1), 29–41.
Song, S., Yao, J., He, Z., Qiu, J., and Chen, J. (2008). “Effect of operational parameters on the decolorization of C.I. Reactive Blue 19 in aqueous solution by ozone enhanced electrocoagulation.” J. Hazard. Mater., 152(1), 204–210.
Vepsalainen, M., Kivisaari, H., Pulliainen, M., Oikari, A., and Sillanpaa, M. (2011). “Removal of toxic pollutants from pulp mill effluents by electrocoagulation.” Sep. Purif. Technol., 81(2), 141–150.
Xinhua, X., and Xiangfeng, Z. (2004). “Treatment of refectory oily wastewater by electrocoagulation process.” Chemosphere, 56(10), 889–894.
Yilmaz, A. E., Boncukcuoglu, R., and Kocakerim, M. M. (2007). “A quantitative comparison between electrocoagulation and chemical coagulation for boron removal from boron-containing solution.” J. Hazard. Mater., 149(2), 475–481.
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Published In
Journal of Hazardous, Toxic, and Radioactive Waste
Volume 17 • Issue 2 • April 2013
Pages: 146 - 152
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 9, 2012
Accepted: Nov 8, 2012
Published online: Mar 15, 2013
Published in print: Apr 1, 2013
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