Original Article

Adsorption of Polycyclic Aromatic Hydrocarbons on Activated Carbons: Kinetic and Isotherm Curve Modeling


The modeling of kinetic and isotherm curves acquired in adsorption of polycyclic aromatic hydrocarbons (PAHs) as a model compound (phenanthrene) on activated carbons in the organic solvent. All the runs were carried out in a batch system at atmospheric pressure, process temperature of 24±2°C, and using the 100 ml phenanthrene in cyclohexan. This experimental work was mainly focused on the study of how the variables properties such as adsorbent dosage, the initial phenanthrene concentration, contact time and pH of cyclohexane solutions influence the kinetic and isotherm of the adsorption process. The results indicated that pH did not play a key role in the process of phenanthrene adsorption. The considerable adsorption (8.34 mg/g) was reached at pH 7, adsorbent dosage of 0.3 g/100 ml and agitation time of 11 h on activated carbons. The impact of adsorbent dose on phenanthrene concentration was not important after 0.3 g/100 ml. The results also showed that adsorption capacity became notably greater with an increase in contact time and initial phenanthrene concentration. Another important finding was that adsorption processes and equilibrium data well fitted by pseudo-second-order kinetic (R2=0.99) and Fraundlich adsorption models (R2=0.99). It can be concluded that there was a significant positive correlation between adsorption processes and the Freundlich isotherm model but Langmuir theory showed only a weak association.

Leglize P, Alain S, Jacques B, Corinne L. Adsorption of phenanthrene on activated carbon increases mineralization rate by specific bacteria. Journal of Hazardous Materials 2008;151(2):339-47.

Yuan M, Tong S, Zhao S, Jia CQ. Adsorption of polycyclic aromatic hydrocarbons from water using petroleum coke-derived porous carbon. Journal of Hazardous Materials 2010;181(1):1115-20.

Ania C, Cabal B, Pevida C, Arenillas A, Parra J, Rubiera F, et al. Effects of activated carbon properties on the adsorption of naphthalene from aqueous solutions. Applied Surface Science 2007;253(13):5741-6.

Zhou H-C, Zhong Z-P, Jin B-S, Huang Y-J, Xiao R. Experimental study on the removal of PAHs using in-duct activated carbon injection. Chemosphere 2005;59(6):861-9.

Sumathi S, Bhatia S, Lee K, Mohamed A. Adsorption isotherm models and properties of SO< sub> 2 and NO removal by palm shell activated carbon supported with cerium (Ce/PSAC). Chemical Engineering Journal 2010;162(1):194-200.

Gong Z, Alef K, Wilke B-M, Li P. Activated carbon adsorption of PAHs from vegetable oil used in soil remediation. Journal of Hazardous Materials 2007;143(1):372-8.

Ania C, Cabal B, Pevida C, Arenillas A, Parra J, Rubiera F, et al. Removal of naphthalene from aqueous solution on chemically modified activated carbons. Water Research 2007;41(2):333-40.

Mastral A, García T, Callén M, Navarro M, Galbán J. Removal of naphthalene, phenanthrene, and pyrene by sorbents from hot gas. Environmental Science & Technology 2001;35(11):2395-400.

Valderrama C, Cortina J, Farran A, Gamisans X, Lao C. Kinetics of sorption of polyaromatic hydrocarbons onto granular activated carbon and Macronet hyper-cross-linked polymers (MN200). Journal of Colloid and Interface Science 2007;310(1):35-46.

Luna FMT, Pontes-Filho AA, Trindade ED, Silva IJ, Azevedo DC, Cavalcante CL. Removal of aromatic compounds from mineral naphthenic oil by adsorption. Industrial & Engineering Chemistry Research 2008;47(9):3207-12.

Yang X, Al-Duri B. Kinetic modeling of liquid-phase adsorption of reactive dyes on activated carbon. Journal of Colloid and Interface Science 2005;287(1):25-34.

Cabal B, Ania C, Parra J, Pis J. Kinetics of naphthalene adsorption on an activated carbon: comparison between aqueous and organic media. Chemosphere 2009;76(4):433-8.

Changming Z. Adsorption and De-Sorption of Polycyclic Aromatic Hydrocarbons on Activated Carbon. Int J Environ Anal Che 2012.

Liu Q-S, Zheng T, Wang P, Jiang J-P, Li N. Adsorption isotherm, kinetic and mechanism studies of some substituted phenols on activated carbon fibers. Chemical Engineering Journal 2010;157(2):348-56.

Rey-Salgueiro L, Pontevedra-Pombal X, Álvarez-Casas M, Martínez-Carballo E, García-Falcón MS, Simal-Gándara J. Comparative performance of extraction strategies for polycyclic aromatic hydrocarbons in peats. Journal of Chromatography A 2009;1216(27):5235-41.

Pérez-Gregorio M, García-Falcón M, Martínez-Carballo E, Simal-Gándara J. Removal of polycyclic aromatic hydrocarbons from organic solvents by ashes wastes. Journal of Hazardous Materials 2010;178(1):273-81.

Yang Y, Hofmann T, Pies C, Grathwohl P. Sorption of polycyclic aromatic hydrocarbons (PAHs) to carbonaceous materials in a river floodplain soil. Environmental Pollution 2008;156(3):1357-63.

Karimi-Jashni A, Narbaitz RM. Impact of pH on the adsorption and desorption kinetics of 2-nitrophenol on activated carbons. Water Research 1997;31(12):3039-44.

Kumar A, Kumar S, Kumar S, Gupta DV. Adsorption of phenol and 4-nitrophenol on granular activated carbon in basal salt medium: equilibrium and kinetics. Journal of Hazardous Materials 2007;147(1):155-66.

Hameed B, Din AM, Ahmad A. Adsorption of methylene blue onto bamboo-based activated carbon: kinetics and equilibrium studies. Journal of Hazardous Materials 2007;141(3):819-25.

Srihari V, Das A. Comparative studies on adsorptive removal of phenol by three agro-based carbons: Equilibrium and isotherm studies. Ecotoxicology and Environmental Safety 2008;71(1):274-83.

Özkaya B. Adsorption and desorption of phenol on activated carbon and a comparison of isotherm models. Journal of Hazardous Materials 2006;129(1):158-63.

Hameed B. Evaluation of papaya seeds as a novel non-conventional low-cost adsorbent for removal of methylene blue. Journal of Hazardous Materials 2009;162(2):939-44.

Ania C, Cabal B, Parra J, Arenillas A, Arias B, Pis J. Naphthalene adsorption on activated carbons using solvents of different polarity. Adsorption 2008;14(2-3):343-55.

Long C, Lu J, Li A, Hu D, Liu F, Zhang Q. Adsorption of naphthalene onto the carbon adsorbent from waste ion exchange resin: Equilibrium and kinetic characteristics. Journal of Hazardous Materials 2008;150(3):656-61.

Tan I, Ahmad A, Hameed B. Adsorption isotherms, kinetics, thermodynamics and desorption studies of 2, 4, 6-trichlorophenol on oil palm empty fruit bunch-based activated carbon. Journal of Hazardous Materials 2009;164(2):473-82.

Krishnan KA, Haridas A. Removal of phosphate from aqueous solutions and sewage using natural and surface modified coir pith. Journal of Hazardous Materials 2008;152(2):527-35.

Karaca S, Gürses A, Ejder M, Açıkyıldız M. Kinetic modeling of liquid-phase adsorption of phosphate on dolomite. Journal of Colloid and Interface Science 2004;277(2):257-63.

Namasivayam C, Sangeetha D. Equilibrium and kinetic studies of adsorption of phosphate onto ZnCl< sub> 2 activated coir pith carbon. Journal of Colloid and Interface Science 2004; 280(2):359-65.

Valderrama C, Gamisans X, De las Heras F, Cortina J, Farran A. Kinetics of polycyclic aromatic hydrocarbons removal using hyper-cross-linked polymeric sorbents Macronet Hypersol MN200. Reactive and Functional Polymers 2007;67(12):1515-29.

IssueVol 6 No 1 (2014) QRcode
SectionOriginal Article(s)
Phenanthrene Activated Carbons Adsorption Isotherm Langmuir & Fraundlich Theory Kinetic Models

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
How to Cite
MORADI-RAD R, OMIDI L, KAKOOEI H, GOLBABAEI F, HASSANI H, ABEDIN-LOO R, AZAM K. Adsorption of Polycyclic Aromatic Hydrocarbons on Activated Carbons: Kinetic and Isotherm Curve Modeling. Int J Occup Hyg. 2015;6(1):43-49.