Effect of pH on Adsorption of 2,4-Dinitrophenol onto an Activated Carbon

Tae Young Kim; Seung Jai Kim; Sung Young Cho

Korean Journal of Chemical Engineering, Vol.18, No.5, 755-760, September, 2001

DOI10.1007/BF02706396 Export Citation

Effect of pH on Adsorption of 2,4-Dinitrophenol onto an Activated Carbon

Tae Young Kim , Seung Jai Kim^†, and Sung Young Cho

Department of Environmental Engineering, Chonnam National University, Gwangju 500-757, Korea

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The adsorption characteristics of 2,4-dinitrophenol from water onto a granular activated carbon, F-400, were studied at pH 4.3, 7 and 10. Adsorption equilibria of 2,4-dinitrophenol on GAC could be represented by Sips equation. Equilibrium capacity increased with decreasing pH. The differences in the rates of adsorption are primarily attributable to the differences in the equilibrium at the various pHs. Intraparticle diffusion was explained by surface diffusion mechanism. An adsorption model based on the linear driving force approximation (LDFA) was used for simulating the adsorption behavior of 2,4-dinitrophenol in a fixed bed adsorber.

Keywords:Adsorption;2,4-Dinitrophenol;Activated Carbon;Fixed Bed;pH

[References]

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Mehmet M, Irfanet K, Melda T, J. Environ. Sci. Health, B35(2), 187 (2000)
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Teng HS, Hsieh CT, Ind. Eng. Chem. Res., 37(9), 3618 (1998)
Wakao N, Funazkri, Chem. Eng. Sci., 33, 1375 (1978)

[Referenced By]

[Related Articles]

[1] Kamel D, Tahar S, Pestic. Sci., 54, 269 (1998)

[2] Mehmet M, Irfanet K, Melda T, J. Environ. Sci. Health, B35(2), 187 (2000)

[3] Misic DM, Sudo Y, Suzuki M, Kawazeo K, J. Chem. Eng. Jpn., 15, 490 (1982)

[4] Moon H, Lee WK, J. Colloid Interface Sci., 96, 162 (1983)

[5] Moon H, Tien C, Ind. Eng. Chem. Res., 26, 2024 (1987)

[6] Reid RC, Prausnitz JM, Pokung BE, "The Properties of Gases and Liquides," McGraw-Hill Co., New York (1994)

[7] Ruthven DM, "Principles of Adsorption and Adsorption Processes," John Wiley and Sons, New York (1984)

[8] Teng HS, Hsieh CT, Ind. Eng. Chem. Res., 37(9), 3618 (1998)

[9] Wakao N, Funazkri, Chem. Eng. Sci., 33, 1375 (1978)