Simultaneous Removal of Cyanide and Copper Ions in a Semi-Fluidized Ion Exchanger Bed

Seung-Jai Kim; Kyung-Ran Hwang; Sung-Yong Cho; Hee Moon

Korean Journal of Chemical Engineering, Vol.16, No.5, 664-669, September, 1999

DOI10.1007/BF02708149 Export Citation

Simultaneous Removal of Cyanide and Copper Ions in a Semi-Fluidized Ion Exchanger Bed

Seung-Jai Kim^{1, †}, Kyung-Ran Hwang¹, Sung-Yong Cho¹, and Hee Moon^{1, 2}

¹Department of Environmental Engineering, Chonnam National University, Kwang-ju, Korea
²Faculty of Applied Chemical Engineering, Chonnam National University, Kwang-ju, Korea

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Simultaneous removal of cyanide and copper ions from electroplating wastewater was studied in a liquid-solid semi-fluidized ion exchanger bed. The diameter and the height of column are 20 mm and 600 mm, respectively. Strong-base anion exchange resin particles (Dowex1X8-50) were contacted with synthetic solutions containing copper and cyanide ions. Cyanide and copper ions in the solution were analyzed by a cyanide electrode and ICP (inductively coupled plasma), respectively. The ion exchange equilibrium data of Cu⁺ removed as cyanide-copper complexes on Dowex1X8-50 at 25℃ can be fitted with the Langmuir equation. Early leakage of cyanide from experimental loading profile data results in not only lower selectivity of free cyanide but also different seletivities of CN-Cu complexes due to the size and the structure of complexes. The optimum molar ratio (Q) between cyanide and copper ions is about 3 to obtain a reasonable removal rate of cyanide in this experimegnt.

Keywords:Simultaneous Removal;Cyanide;Copper;Ion-exchange;Semi-fluidized Bed

[References]

Avery NL, Fries W, Ind. Eng. Chem. Prod. Res. Dev., 14(2), 102 (1975)
Fagan P, Paull B, Haddad PR, Dume R, Kamar H, J. Chromatogr. A, 770, 175 (1997)
Goncalves MMM, Pinto AF, Granato M, Environ. Technol., 19(2), 133 (1998)
Goto M, Goto S, J. Chem. Eng. Jpn., 20(5), 417 (1987)
Gupta A, "Recovery of Metal-Cyanide Complexes from Electroplating Wastewaters by Ion Exchange," Ph.D. Thesis (1985)
Hsu TL, Tran T, Young D, "Modeling of the Chemical Speciation of Cyanide Species-Application to Effluent Treatment," Ausimm Extractive Metal Con., 133 (1991)
Jae WM, Hong ZD, Kim MS, Bull. Environ. Sci., 9 (1988)
Jennifer BB, Ryan RL, Paziranden M, Environ. Sci. Technol., 31, 2910 (1997)
Lee JS, Deorkar NV, Tavlarides LL, Ind. Eng. Chem. Res., 37(7), 2812 (1998)
Lee K, Hong J, AIChE J., 41(12), 2653 (1995)
Short AE, Haselmann SF, Semmens MJ, J. Environ. Sci. Health Part A-Toxic/Hazard. Subst. Environ. Eng., 32, 1 (1997)
Tchobanoglous G, Burton EL, "Wastewater Engineering," 3rd ed., Metcalf & Eddy, Inc. (1991)

[Referenced By]

[1] Avery NL, Fries W, Ind. Eng. Chem. Prod. Res. Dev., 14(2), 102 (1975)

[2] Fagan P, Paull B, Haddad PR, Dume R, Kamar H, J. Chromatogr. A, 770, 175 (1997)

[3] Goncalves MMM, Pinto AF, Granato M, Environ. Technol., 19(2), 133 (1998)

[4] Goto M, Goto S, J. Chem. Eng. Jpn., 20(5), 417 (1987)

[5] Gupta A, "Recovery of Metal-Cyanide Complexes from Electroplating Wastewaters by Ion Exchange," Ph.D. Thesis (1985)

[6] Hsu TL, Tran T, Young D, "Modeling of the Chemical Speciation of Cyanide Species-Application to Effluent Treatment," Ausimm Extractive Metal Con., 133 (1991)

[7] Jae WM, Hong ZD, Kim MS, Bull. Environ. Sci., 9 (1988)

[8] Jennifer BB, Ryan RL, Paziranden M, Environ. Sci. Technol., 31, 2910 (1997)

[9] Lee JS, Deorkar NV, Tavlarides LL, Ind. Eng. Chem. Res., 37(7), 2812 (1998)

[10] Lee K, Hong J, AIChE J., 41(12), 2653 (1995)

[11] Short AE, Haselmann SF, Semmens MJ, J. Environ. Sci. Health Part A-Toxic/Hazard. Subst. Environ. Eng., 32, 1 (1997)

[12] Tchobanoglous G, Burton EL, "Wastewater Engineering," 3rd ed., Metcalf & Eddy, Inc. (1991)