충전층 흡착관내에서 입상활성탄에 의한 페놀류의 제거

윤영삼

HWAHAK KONGHAK, Vol.37, No.2, 219-228, April, 1999

Export Citation

충전층 흡착관내에서 입상활성탄에 의한 페놀류의 제거

Removal of Phenols by Granular Activated Carbon in Packed-Bed Adsorption Column

윤영삼

초록

흡착실험과 예측모델 연구를 통해 수용액에서 phenol(Ph), p-chlorophenoI(PCP) 및 p-nitrophenol(Ph''n릿 제거에 있어서 충전층 흡착관의 성능을 조사하였다. 흡착거동에 대한 예측모델식은 유한요소법을 적용 수치모사하였다. 흡착제의 흡착거동은 표면확산 및 세공확산모델을 적용하여 해석하였다. 두 모델 모두 충전층 흡착관의 흡착현상을 예측하는데 적용될 수 있었다. 그러나, 세공확산모엘이 표면확산모델보다 실험치(초기농도, 유량, 충진층높이)와의 부합도가 다소 좋았다. 그러므로, 물질전달계수 변화에 대한 충전층 흡착관의 성능 예측을 위해 세공확산모델을 적용 충전층 흡착관의 성능을 조사하였다.

Adsorption experimental and predictive model studies were done to investigate the performance of a packed-bed adsorption column for the removal of phenoI(Ph), p-chlorophenol(PCP), and p-nitrophenoI(PNP) from aqueous solutions. The composed prediction model equations for adsorption behavior were solved by the technique of finite element method. Adsorption behavior of adsorbates are analyzed by introducing surface and pore diffusion models. Both models could be applied to predicting the packed-bed adsorption phenomena. However, the pore diffusion model is slightly better than the surface diffusion model in representing the experimental data(initial concentration, flow rate, and packed-bed length). Therefore, the pore diffusion model was applied to predicting the performance of packed-bed adsorption column according to mass transfer coefficients(film resistance, intraparticle diffusion, and axial dispersion) changes.

Keywords:Packed-Bed Adsorption Column;Finite Element Method;Surface and Pore Diffusion Models;Adsorption Phenomena

[References]

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[1] Park WH, "Challenges in Chemical Engineering in Korea," Seoul, 132 (1997)

[2] Do GS, Kim YW, "Water Treatment Process and Application," Dong Hwa Technology Publishing Co., Seoul (1984)

[3] Rook JJ, Water Treatm. Exam., 23, 234 (1974)

[4] Grukhman AA, "Introduction to the Theory of Similarity," Academic Press, New York (1965)

[5] Park PW, Yun YS, Kweon OS, Cho TJ, Ok JY, HWAHAK KONGHAK, 32(1), 103 (1994)

[6] Park PW, Kim IS, Cho TJ, Jeong(Park) YO, HWAHAK KONGHAK, 30(5), 594 (1992)

[7] Mills PL, Lai SS, Dudukovic MP, Ind. Eng. Chem. Fundam., 24, 64 (1985)

[8] Gordon M, Murad JB, Water Res., 22, 279 (1988)

[9] Traegner UK, Suidan MT, Water Res., 23, 267 (1989)

[10] Annesini MC, gironi F, Ruzzi M, Tomei C, Water Res., 21, 567 (1987)

[11] Grant RJ, Manes M, Ind. Eng. Chem. Fundam., 5, 490 (1966)

[12] Crittenden JC, Weber WJ, J. Environ. Eng. Div. Am. Soc. Civil Eng., 104(EE2), 185 (1978)

[13] Weber WJ, Liu KT, Chem. Eng. Commun., 6, 49 (1980)

[14] Raghavan NS, Ruthven DM, AIChE J., 29, 922 (1983)

[15] Hand D, Crittenden JC, Thacker WE, J. Environ. Eng. Div. Am. Soc. Civil Eng., 109(1), 82 (1983)

[16] Hand D, Crittenden JC, Thacker WE, J. Environ. Eng. Div. Am. Soc. Civil Eng., 110(2), 441 (1984)

[17] Gardini L, Servida A, Morrbidelli M, Carra S, Comput. Chem. Eng., 9(1), 1 (1985)

[18] Khana R, Seinfeld JH, Adv. Chem. Eng., 13, 113 (1987)

[19] Yun YS, Kweon SH, Byun YS, Kim IS, Park PW, Jeong(Park) YO, HWAHAK KONGHAK, 35(5), 705 (1997)

[20] Adamson AW, "Physical Chemistry of Surface," Interscience Pub., Wiley, New York (1982)

[21] Chun HJ, "Catalysis and Introduction," Seoul, 32 (1995)

[22] Crittenden JC, Sontheimer H, Summer RS, "Actvated Carbon for Water Treatment," 2nd Eds., DVGW-Forschungsstelle Engler-Bunte-Institute University Karlsruhe, 362 (1988)

[23] Wilke CR, Chang P, AIChE J., 1, 264 (1955)

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

[25] Weber WJ, Pirbazari M, "Treatment of Water by Granular Activated Carbon, Advances in Chemistry Series 2O2," Amer. Chem. Soc., Washington, D.C. (1983)