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Korean Journal of Chemical Engineering, Vol.22, No.6, 873-876, 2005
Lead Recovery from Waste Frit Glass Residue of Electronic Plant by Chemical-Electrochemical Methods
This work aims at recovering lead from frit glass waste of electronic plants by using the electrochemical method comprising two successive steps of lead leaching and electrodeposition. In the leaching step, it was found that nitric acid and acetic acid are better solutions for the dissolution of lead oxide compared with sodium hydroxide, hydrochloric acid, and sulfuric acid. More than 95% of the lead was leached by 0.1M nitric acid or 0.5M acetic acid at 0.5% weight by solid volume. In the electrodeposition step, more than 95% of lead can be removed with high current efficiency from the leaching solution at an optimum current density. The values of the optimum current density of 0.5 and 1M acetic electrolytes were between 8.8-10 mA/cm2, whereas those for 0.1M and 0.5M of nitric acid were 15 and 27.5 mA/cm2, respectively.
[References]
- Agarwal IC, Rochon AM, Gesser HD, Sparling AB, Water Res., 18(2), 227, 1984
- Allen PD, Bhaumik VH, J. Environ. Eng.-ASCE, 124(11), 1066, 1998
- Carreno G, Sosa E, Gonzalez I, Ponce-De-Leon C, Batina N, Oropeza MT, Electrochim. Acta, 44(15), 2633, 1999
- Kim HT, Lee K, Korean J. Chem. Eng., 16(3), 298, 1999
- Kim SJ, Jeung SY, Moon H, Korean J. Chem. Eng., 15(6), 637, 1998
- Kim SJ, Lim KH, Joo KH, Lee MJ, Kil SG, Cho SY, Korean J. Chem. Eng., 19(6), 1078, 2002
- Musson SE, Jang YC, Townsend TG, Chung IH, Environ. Sci. Technol., 34(20), 4376, 2000
- Park JK, Choi SB, Korean J. Chem. Eng., 19(1), 68, 2002
- Park JS, Moon SH, Korean J. Chem. Eng., 19(5), 797, 2002
- Pourbaix, Atals d'equilibres electrochimiques a 25℃, Paris, Ed. Gauthier-Villars, 256, 1963
- Rastogi RP, Das I, Pushkarna A, Chand S, J. Phys. Chem., 97(18), 4871, 1993
- Ried M, Heavy Metal Removal from Sewage Sludge: Practical Experiences with Acid Treatment, pretreatment in Chemical Water and Wastewater Treatment, Springer-Verlag Berlin Heidelberg, 327, 1988
- Weast RC, Handbook of Chemistry and Physics, Ohio, USA, 5th edition, The Chemical Rubber Co., Cleveland., 1969
- Widner RC, Sousa MFB, Bertazzoli R, J. Appl. Electrochem., 28(2), 201, 1998
- Wong L, Henry JG, Biological Removal and Chemical Recovery of Metals from Sludges, Proc. Ind. Waste. Conf. 39th, 515, 1985
- Wozniak DJ, Huang JYC, J. Water Poll. Control Fed., 54(12), 1574, 1982
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