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http://dx.doi.org/10.5322/JES.2008.17.5.565

Comparison of Surface Characteristics and Adsorption Characteristics of Activated Carbons Changed by Acid and Base Modification  

Lee, Song-Woo (Division of Applied Chemical Engineering, Pukyong National University)
Lee, Min-Gyu (Division of Applied Chemical Engineering, Pukyong National University)
Park, Sang-Bo (Division of Applied Chemical Engineering, Pukyong National University)
Publication Information
Journal of Environmental Science International / v.17, no.5, 2008 , pp. 565-571 More about this Journal
Abstract
The surface properties of activated carbon modified by acids and base were studied. The influence of the surface chemistry on the adsorption of benzene and acetone vapor on modified activated carbons has been investigated The modified activated carbons were obtained by treatment with acetic acid ($CH_3COOH$), nitric acid ($HNO_3$) and sodium hydroxide (NaOH). The modified activated carbons had similar porosity but different surface chemistry and adsorption characteristics. The total surface acidity (sum of functional groups) of activated carbon (AC-AN) treated by nitric acid was 2.6 times larger than that of activated carbon (AC) before the acid treatment. Especially, carboxyl group was much developed by nitric acid treatment. The benzene equilibrium adsorption capacity of AC-AN decreased 20% more than that of AC. However, the acetone equilibrium adsorption capacity of AC-AN increased 20% more than that of AC because of the large increase of carboxyl group and acidity.
Keywords
Activated carbon; Surface chemistry; Adsorption; Breakthrough; Modification;
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Times Cited By KSCI : 7  (Citation Analysis)
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1 Moreno-Castilla C., Carrasco-Marin F., Parejo-Perez C., Lopes Ramon M. V., 2001, Dehydration of methanol to dimethyl ether catalyzed by oxidized activated carbons with varying surface acidic character, Carbon, 39, 869-875   DOI   ScienceOn
2 Lee S. W., Bae S. K., Kwon J. H., Na Y. S., An C. D., Yoon Y. S., Song S. K., 2005, Correlations between pore structure of activated carbon and adsorption characteristics of acetone vapor, J. Korean Soc. Environ. Engrs, 27(6), 620-625
3 Lee M. G., Lee S. W., Lee S. H., 2006, Comparison of vapor adsorption characteristics of acetone and toluene based on polarity in activated carbon fixed-bed reactor, Korean J. Chem. Eng., 23(5), 773-778   DOI
4 Boehm H. P., 1994, Some aspects of the surface chemistry of carbon blacks and other carbons, Carbon, 32(5), 759-769   DOI   ScienceOn
5 Pittman, C. U., He G. R., Wu B., Gardner S. D., 1997, Chemical modification of carbon fiber surfaces by nitric acid oxidation followed by reaction with tetraethylenepentamine, Carbon, 35(3), 317-331   DOI   ScienceOn
6 Teng H., Tu Y. T., Lai Y. C., Lin C. C., 2001, Reduction of NO with $NH_3 $ over carbon catalysts: The effects of treating carbon with $H_2SO_4$ and $HNO_3$, Carbon, 39(4), 575-582   DOI   ScienceOn
7 Kim B. H., Kang M., 2004, Characteristics of chlorobenzene adsorption on oxidative treated activated carbon, J. Korean Solid Org. Waste Manage., 21(43), 319-217
8 Kim H. W., Lee S. W., Lee M. G., Cheon J. K., 2007, Variations of equilibrium adsorption capacities according to type and mixing fraction of binary mixed gas on activated carbon fixed-bed, J. Environ. Sci., 16(10), 1197-1202   과학기술학회마을   DOI   ScienceOn
9 Sung J. H., Lee K. H., 1999, Adsorption of ammonia on activated carbon, J. Korean Inst. Chem.l Engrs., 37(2), 158-164
10 Pereira M. F. R., Soares S. F., Orfao J. J. M., 2003, Adsorption of dyes on activated carbons: influence of surface chemical groups, Carbon, 41, 811-821   DOI   ScienceOn
11 Lee S. W., Kwon J. H., Kang J. H., Na Y. S., An C. D., Yoon Y. S., Song S. K., 2006, Adsorption characteristics of toluene vapor according to pore size distribution of activated carbon, J. Environ. Sci., 15(7), 695-699   과학기술학회마을   DOI   ScienceOn
12 Garcia T., Murillo R., Cazorla-Amoros D., Mastral A. M., Linares-Solano, 2004, Role of the activated carbon surface chemistry in the adsorption of phenanthrene, Carbon, 42, 1683-1689   DOI   ScienceOn
13 You S. H., Kim H. S., Kim H. H., 1997, Adsorption of chromium by heat treated microporous carbon, J. Korean Ind. Eng. Chem., 8(4), 631-636
14 Ryu D. K., Kim S. H., 1998, Adsorption characteristics of $CO_2$ on activated carbons treated with alkali- metal salts, J. Korean Ind. Eng. Chem., 9(2), 286-293
15 Ju C. S., Park H. J., Jeong K. S., 2003, Surface modification and anchoring titanium dioxide on mesoporous carbons, J. Environ. Sci., 12(9), 1005-1010   과학기술학회마을   DOI   ScienceOn
16 Noh J. S., Schwarz J. A., 1990, Effect of $HNO_3$ treatment on the surface acidity of activated carbons, Carbon, 28(5), 675-682   DOI   ScienceOn
17 Ahn H. G., Jung S. C., Park S. S., 2002, Adsorption characteristics of sulfide and amine on H3PO4 impregnated activated carbon in flow system, J. Korean Soc. Environ. Eng., 24(9), 1615-1622
18 Shim C. H., Lee W. K., 2006, Adsorption characteristics of benzene and MEK on surface oxidation treated adsorbent, J. Korean Soc. Atmos. Environ., 22(1), 25-33   과학기술학회마을
19 Lee S. K., Park Y. S., 2000, Adsorption capacity of H2S on the impregnated activated carbon with NaOH, J. Korean Soc. Environ. Eng., 22(5), 879-886
20 Ju H. S., Kim B. H., Jung S. C., Ra D. G., 2000, A study on the deposition of chitosan for enhancing the adsorption ability of activated carbon, J. Korean Soc. Environ. Eng., 22(2), 203-210
21 Lee S. W., Kam S. K., Lee M. G., 2007, Comparison of breakthrough characteristics for binary vapors composed of acetone and toluene based on adsorption intensity in activated carbon fixed-bed reactor, J. Ind. Eng. Chem., 13(6), 911-916
22 Boehm H. P., 1996, In Advances in Catalysis, Academic Press, New York, 16, 179-274