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A Kinetic Study on the Ammonia Nitrogen Adsorption by Physical Characteristics of Activated Carbon  

Seo, Jeong-beom (Department of Environmental Engineering, Anyang University)
Kang, Joon-won (Department of Environmental Engineering, Anyang University)
Lee, Ik-soo (Department of Environmental Energy Engineering, Seoul National University of Technology)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.3, 2008 , pp. 311-316 More about this Journal
Abstract
This study aimed to obtain equilibrium concentration on adsorption removal of ammonia nitrogen by activated carbon, to express the adsorption characteristics following Freundlich isotherm and also, based on the value obtained, to investigate the relationship between physical characteristics of activated carbon and dynamics of ammonia nitrogen removal by obtaining rate constant and effective pore diffusivity. The results summarized from this study are as follows. It was noted that powdered activated carbon showed better adsorption ability than granular activated carbon. The value of constant (f) of Freundlich isotherm of powered activated carbon was $4.6{\times}10^{-8}$ which is bigger than that of granular activated carbon. The adsorption rate constant on ammonia nitrogen of powered activated carbon with high porosity and low effective diameter was highest as 0.416 hr-1 and the effective pore diffusivity ($D_e$) was lowest as $1.17{\times}10^{-6}cm^2/hr$, and the value of ammonia nitrogen adsorption rate constant of granular activated carbon was $0.149{\sim}0.195hr^{-1}$. It was revealed that, with the same amount of dosage, the adsorptive power of activated carbon with lower effective diameter and bigger porosity was better and its rate constant was also high. With a little adsorbent dosage of 2 g, there was no difference removal ability of ammonia nitrogen as change of adsorption properties.
Keywords
Activated carbon; Ammonia nitrogen adsorption; Kinetics; Physical characteristics;
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  • Reference
1 환경부(2001b). 하수처리장의 탈질.탈인 공정 상용화 기술 개발
2 Daigger, G. T. and David, G. (1988). Enhanced Secondary Treatment Incorporating Biological Nutrient Removal. Journal WPCF, 60, pp. 1833-1842
3 U. S. EPA (1993). Manual Nitrogen Control. U. S. EPA/625/ R-93/010
4 윤정미(2001). 생물학적 방법을 이용한 영양염류 고도처리 기술 동향조사 연구. 석사학위논문, 동국대학교 산업기 술환경대학원
5 Arora, M. L., Barth, E. F. and Margaret, B. U. (1985). Technology Evaluation of Sequencing Batch Reactor. Journal WPCF, 57, pp. 867-875
6 Moon, H. and Lee, W. K. (1983). Intraparticle Diffusion in Liquid-phase Adsorption of Phenols with Activated Carbon in Finite Batch Adsorber. Journal of Colloid and Interface Science, 96, pp. 162-171   DOI   ScienceOn
7 환경부(2004). 하수도 통계
8 U. S. EPA (1975). Process Design Manual for Nitrogen Control
9 Dryden, C. E. and Kay, W. B. (1954). Kinetic of Batch Adsorption and Desorption. Ind. and Eng. Chemistry, 46(11), pp. 2294-2300   DOI
10 Silverstein, J. and Schroeder, E. D. (1983). Performance of SBR Activated Sludge Processes with Nitrification/Denitrification. Journal WPCF, 55, pp. 377-384
11 Burdick, C. R., Refling, D. R. and Stensel, D. H. (1982). Advanced Biological Treatment to Achieve Nutrient Removal. Journal WPCF, 54, pp. 1078-1086
12 환경부(2001a). 수질오염공정시험방법
13 Tetreault, M. J., Benedict, A. H., Christopher, K. and Barth, E. F. (1986). Biological Phosphorus Removal : A Technology Evaluation. Journal WPCF, 58, pp. 823-837