AJAC  Vol.6 No.6 , May 2015
Surface Modification of Commercial Activated Carbon (CAG) for the Adsorption of Benzene and Toluene
Abstract: In this work, we determined the surface characteristics of natural (CA-1) and HNO3 treated (CA-2) CAG. Equilibrium, kinetics and breakthrough for adsorption of benzene and toluene by CA-1 and CA-2 were studied. Concentrations of benzene and toluene (mg/L) were determined by gas chromatography with headspace extraction. The data of adsorption kinetic and equilibrium were best fitted by pseudo-second order model and Langmuir isotherm, respectively. The best results of benzene and toluene adsorption from fixed bed were obtained at volumetric flow rate (Q1 = 70 mL/min) using adsorbent CA-2. The study of inferential statistics revealed that CA-1 and CA-2 adsorbents are statistically different at a 5% significance level.
Cite this paper: da Costa Lopes, A. , de Carvalho, S. , do Socorro Barros Brasil, D. , de Alcântara Mendes, R. and Lima, M. (2015) Surface Modification of Commercial Activated Carbon (CAG) for the Adsorption of Benzene and Toluene. American Journal of Analytical Chemistry, 6, 528-538. doi: 10.4236/ajac.2015.66051.

[1]   Arambarri, I., Lasa, M., Garcia, R. and Millan, E. (2004) Determination of Fuel Dialkyl Ethers and BTEX in Water Using Headspace Solid-Phase Microextraction and Gas Chromatography-Flame Ionization Detection. Journal of Chromatography A, 1033, 193-203.

[2]   Roldan, P.S., Alcantara, I.L., Castro, G.R., Rocha, J.C., Padilha, C.C.F. and Padilha, P.M. (2003) Determination Heavy Metals and Organic Compounds in Fuel Ethanol by FAAS after Enrichment in Column Packed with 2-Aminothiazole-Modified Silica Gel. Analytical Chemical, 375, 574-577.

[3]   Su, F., Lu, C. and Hu, S. (2010) Adsorption of Benzene, Toluene, Ethylbenzene and p-Xylene by NaOCl-Oxidized Carbon Nanotubes. Colloids and Surface A, 353, 83-91.

[4]   Benkhedda, E.A. (2000) Experimental and Modeled Results Describing the Adsorption of Toluene onto Activated Carbon. Journal of Chemical Engineering Data, 45, 650-653.

[5]   Lillo-Ródenas, M.A., Fletcher, A.J., Thomas, K.M., Cazorla-Amorós, D. and Linares-Solano, A. (2006) Competitive Adsorption of a Benzene-Toluene Mixture on Activated Carbons at Low Concentration. Carbon, 44, 1455-1463.

[6]   Chingombe, P., Saha, B. and Wakeman, R.J. (2005) Surface Modification and Characterisation of a Coal-Based Activated Carbon. Carbon, 43, 3132-3143.

[7]   Monser, L. and Adhoum, N. (2002) Modified Activated Carbon for the Removal of Copper, Zinc, Chromium and Cyanide from Wastewater. Separation and Purification Technology, 26, 137-146.

[8]   Lillo-Ródenas, M.A., Cazorla-Amorós, D. and Linares-Solano, A. (2005) Behaviour of Activated Carbons with Different Pore Size Distributions and Surface Oxygen Groups for Benzene and Toluene Adsorption at Low Concentrations. Carbon, 43, 1758-1767.

[9]   Derbyshire, F., Jagtoyen, M., Andrews, R., Rao, A., Martin-Gullon, I. and Grulke, E.A. (2000) Carbon Materials in Environmental Applications. Carbon Materials in Environmental Applications, 27, 1-66.

[10]   Wibowo, N., Setyadhi, L., Wibowo, D., Setiawan, J. and Ismadji, S. (2007) Adsorption of Benzene and Toluene from Aqueous Solutions onto Activated Carbon and Its Acid and Heat Treated Forms: Influence of Surface Chemistry on Adsorption. Journal of Hazardous Materials, 146, 237-242.

[11]   Moreno-Castilla, C. (2004) Adsorption of Organic Molecules from Aqueous Solutions on Carbon Materials. Carbon, 42, 83-94.

[12]   Yang, R.T. (2003) Adsorbents: Fundamentals and Applications. John Wiley & Sons Inc., Hoboken.

[13]   Nagano, S., Tamon, H., Adzumi, T., Nakagawa, K. and Suzuki, T. (2000) Activated Carbon from Municipal Waste. Carbon, 38, 915-920.

[14]   Juang, R., Wu, F. and Tseng, R. (2002) Characterization and Use of Activated Carbons Prepared from Bagasses for Liquid-Phase Adsorption. Colloids and Surfaces A, 201, 191-199.

[15]   Yin, C.Y., Aroua, M.K. and Daud, W.M.A.W. (2007) Review of Modifications of Activated Carbon for Enhancing Contaminant Uptakes from Aqueous Solutions. Separation and Purification Technology, 52, 403-415.

[16]   El-Hendawy, A.A. (2003) Influence of HNO3 Oxidation on the Structure and Adsorptive Properties of Corncob-Based Activated Carbon. Carbon, 41, 713-722.

[17]   American Society for Testing and Materials (2005) Standard Test Method for pH of Activated Carbon Method: ASTM D 3838. American Society for Testing and Materials, Pennsylvania.

[18]   Youssef, A.M., El-Nabarawy, T. and Samra, S.E. (2004) Sorption Properties of Chemically-Activated Carbons: 1. Sorption of Cadmium(II) Ions. Colloids and Surfaces A, 235, 153-163.

[19]   Boehm, H.P. (1994) Some Aspects of the Surface Chemistry of Carbon Blacks and Other Carbons. Carbon, 32, 759- 769.

[20]   Bueno, C.I.C. and Carvalho, W.A. (2007) Lead(II) Removal in Discontinous Systems by Carbon Activated by Phosphoric Acid and Vapor. Química Nova, 30, 1911-1918.

[21]   Lu, C., Su, F. and Hu, S. (2008) Surface Modification of Carbon Nanotubes for Enchancing BTEX Adsorption from Aqueous Solutions. Applied Surface Science, 254, 7035-7041.

[22]   Stenerson, K.M. and Wallace, R.F. (2008) Método 6040 D-Odors in Drinking Water, Using SPME on the Supelco SLB-5ms Capillary Column-SUPELCO® Analytical. LG-GC Solutions for Separations Scientists.

[23]   Method 0010-Method for Determining Polynuclear Aromatic Hydrocarbons (PAHS) in Stack Gas-Emissions Assessment of Conventional Stationary Combustion Systems: Methods and Procedure Manual for Sampling and Analysis. ©2009, Test America Laboratories, Inc., All rights reserved Test America & DesingTM are trademarks of Test America Laboratories, Inc.

[24]   Villacanas, F., Pereira, M.F.R., Orfao, J.J.M. and Figueiredo, J.L. (2006) Adsorption of Simple Aromatic Compounds on Activated Carbons. Journal of Colloid and Interface Science, 293, 128-136.

[25]   Castilla, M.C. (2004) Eliminacion de Contaminantes Organicos de las águas mediante adsorción em materiales de carbón. Departamento de Quimica Inorgánica, Facultad de Ciencias, Espanha.

[26]   Streat, M., Patrick, J.W. and Perez, M.J.C. (1995) Sorption of Phenol and Para-Chlorophenol from Water Using Conventional and Novel Activated Carbons. Water Research, 29, 467-472.

[27]   Ruthven, D.M. (1984) Principles of Adsorption. John Wiley & Sons, Hoboken.

[28]   Mangun, C.L., Yue, Z. and Economy, J. (2002) Adsorption of Organic Contaminants from Water Using Tailored ACFs. Chemistry of Materials, 13, 2356-2360.

[29]   Ania, C.O., Parra, J.B. and Pis, J.J. (2002) Effect of Texture and Surface Chemistry on Adsorptive Capacities of Activated Carbons for Phenolic Compounds Removal. Fuel Processing Technology, 77-78, 337-343.

[30]   Marato-Valer, M.M., Dranca, I., Lupascu, T. and Nastas, R. (2004) Effect of Adsorbate Polarity on Thermodesorption Profiles from Oxidized and Metal-Impregnated Activated Carbons. Carbon, 42, 2655-2659.

[31]   Rios, R.V.A., Alves, D.E., Dalmazio, I., Bento, S.F.V., Donnici, C.L. and Lago, R.M. (2003) Tailoring Activated Carbon by Surface Chemical Modification with O, S, and N Containing Molecules. Materials Research, 6, 129-135.

[32]   Aburub, A. and Wurster, D.E. (2006) Phenobarbital Interactions with Derivatized Activated Carbon Surfaces. Journal of Colloid and Interface Science, 296, 79-85.

[33]   Julien, F., Baudu, M. and Mazet, M. (1998) Relationship between Chemical and Physical Surface Properties of Activated Carbon. Water Research, 32, 3414-3424.

[34]   Jankowska, H. and Swiatkowski, A. (1991) Active Carbon, Chapter 3: Structure and Chemical Nature of Surface, 106-107. Ellis Horwood Series in Physical Chemistry.

[35]   Daifullah, A.A.M. and Girgis, B.S. (2003) Impact of Surface Characteristics of Activated Carbon on Adsorption of BTEX. Colloids and Surfaces A, 214, 181-193.

[36]   Figueiredo, J.L., Pereira, M.F.R., Freitas, M.M.A. and Orfao, J.J.M. (1999) Modification of the Surface Chemistry of Activated Carbons. Carbon, 37, 1379-1389.

[37]   Ahmedna, M., Marshall, W.E. and Rao, R.M. (2000) Surface Properties of Granular Activated Carbons from Agricultural By-Products and Their Effects on Raw Sugar Decolorization. Bioresource Technology, 71, 103-112.

[38]   Tomaszewski, W., Gun’ko, V.M., Zieba, J.S. and Leboda, R. (2003) Structural Characteristics of Modified Activated Carbons and Adsorption of Explosives. Journal of Colloid and Interface Science, 266, 388-402.

[39]   Anirudhan, T.S., Sreekumari, S.S. and Bringle, C.D. (2009) Removal of Phenols from Water and Petroleum Industry Refinery Effluents by Activated Carbon Obtained from Coconut Coir Pith. Adsorption, 15, 439-451.

[40]   Ho, Y.S. and Mckay, G. (1999) Pseudo-Second Order Model for Sorption Processes. Process Biochemistry, 34, 451-465.

[41]   Dizge, N., Aydiner, C., Demirbas, E., Kobya, M. and Kara, S. (2008) Adsorption of Reactive Dyes from Aqueous Solutions by Fly Ash: Kinetic and Equilibrium Studies. Journal of Hazardous Materials, 150, 737-746.

[42]   Padilha, A.R.S. (2011) Portarian 2914, de 12 de dezembro de 2011-Ministério da Saúde.