COMPARISON OF ADSORPTION ISOTHERMS AND KINETICS OF NAPHTHALENE AND PHENANTHRENE ATACTIVATED CARBON BEDS IN THE ORGANIC N-HEXANE SOLUTION

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GOLBABAEI F.; MORADIRAD R.; OMIDI L.; FARHANG DEHGHAN S.; ROSHANI S.

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Journal: Journal of Health and Safety at Work Year:2015 | Volume:5 | Issue:2 Page(s): 63-74

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Title

COMPARISON OF ADSORPTION ISOTHERMS AND KINETICS OF NAPHTHALENE AND PHENANTHRENE ATACTIVATED CARBON BEDS IN THE ORGANIC N-HEXANE SOLUTION

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Keywords

ACTIVATED CARBONQ3

ISOTHERM MODELSQ2

POLYCYCLIC AROMATIC HYDROCARBONSQ3

Abstract

Introduction: POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) are one of the most significant current environmental issues. Phenanthrene and naphthalene adsorption at ACTIVATED CARBON beds prevent the release of these compounds into the environment. The objective of this research was to compare the amounts of phenanthrene and naphthalene adsorption at ACTIVATED CARBON beds in the n-hexane solution.Material and Method: This discontinuous experimental study was conducted in the laboratory scale batch and in the n-hexane solution containing phenanthrene and naphthalene.PH values were adjusted by adding hydrochloric acid and 1 N NaOH. The initial and residual phenanthrene and naphthalene concentrations were spectrophotometrically measured at 270 and 266 nm, respectively.Result: Findings showed that the maximum adsorption of naphthalene was obtained at pH=5 and contact time of 8 hours (7.4 mg/gr). The maximum adsorption was reached at pH=7 and contact time of 11 hours for phenanthrene (8.34 mg/gr).Improvement in the adsorption capacity was happened by the increases in contact time and initial phenanthrene and naphthalene concentrations. The adsorption kinetics of these two compounds followed pseudo-second-order and Freundlich isotherm model.Conclusion: Freundlich isotherm model showed a strong association with PAHs adsorption process. A weak correlation was observed between Langmuir theory and the results of the adsorption at ACTIVATED CARBON beds in the organic n-hexane solution.

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EFFECTS OF ACID MODIFICATION OF ACTIVATED CHARCOAL ON ADSORPTION OF SEVOFLURANE AS AN ANESTHESIA GAS

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APA: Copy

GOLBABAEI, F., MORADIRAD, R., OMIDI, L., FARHANG DEHGHAN, S., & ROSHANI, S.. (2015). COMPARISON OF ADSORPTION ISOTHERMS AND KINETICS OF NAPHTHALENE AND PHENANTHRENE ATACTIVATED CARBON BEDS IN THE ORGANIC N-HEXANE SOLUTION. JOURNAL OF HEALTH AND SAFETY AT WORK, 5(2), 63-74. SID. https://sid.ir/paper/235617/en

Vancouver: Copy

GOLBABAEI F., MORADIRAD R., OMIDI L., FARHANG DEHGHAN S., ROSHANI S.. COMPARISON OF ADSORPTION ISOTHERMS AND KINETICS OF NAPHTHALENE AND PHENANTHRENE ATACTIVATED CARBON BEDS IN THE ORGANIC N-HEXANE SOLUTION. JOURNAL OF HEALTH AND SAFETY AT WORK[Internet]. 2015;5(2):63-74. Available from: https://sid.ir/paper/235617/en

IEEE: Copy

F. GOLBABAEI, R. MORADIRAD, L. OMIDI, S. FARHANG DEHGHAN, and S. ROSHANI, “COMPARISON OF ADSORPTION ISOTHERMS AND KINETICS OF NAPHTHALENE AND PHENANTHRENE ATACTIVATED CARBON BEDS IN THE ORGANIC N-HEXANE SOLUTION,” JOURNAL OF HEALTH AND SAFETY AT WORK, vol. 5, no. 2, pp. 63–74, 2015, [Online]. Available: https://sid.ir/paper/235617/en

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