On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution
The purpose of the present work was to explore the removal of three polycyclic aromatic hydrocarbons (naphthalene, fluorene and acenaphtene) (PAHs) from aqueous solution onto an activated carbon. The adsorption performance of these compounds (both kinetic and equilibrium) has been discussed in terms...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2011-06-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.29.5.467 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832544622888353792 |
|---|---|
| author | Marta Haro Belén Cabal José B. Parra Conchi O. Ania |
| author_facet | Marta Haro Belén Cabal José B. Parra Conchi O. Ania |
| author_sort | Marta Haro |
| collection | DOAJ |
| description | The purpose of the present work was to explore the removal of three polycyclic aromatic hydrocarbons (naphthalene, fluorene and acenaphtene) (PAHs) from aqueous solution onto an activated carbon. The adsorption performance of these compounds (both kinetic and equilibrium) has been discussed in terms of their chemical and physical properties. The results showed that the rate of adsorption was strongly dependent on the molecular size of the hydrocarbons. Thus, for example, steric hindrances associated with acenaphthene inhibited the accessibility of this compound to the high-energy sites. Under equilibrium conditions, the uptake seemed to be governed by the carbon–PAH affinity, as the lowest uptake was obtained for naphthalene which displayed the fastest adsorption rate. The interactions between the studied pollutants and the activated carbon seemed to be controlled by two factors, viz. aromaticity and water solubility. As a general rule, the higher the number of aromatic rings in the polycyclic hydrocarbon, the more favoured the adsorbate–carbon interactions. Analysis of the carbon after adsorption of the studied hydrocarbons indicated that the accessibility restrictions to the porosity of the carbon can also lead to weaker interactions with the activated carbon. |
| format | Article |
| id | doaj-art-7e9c603ef6a04778a533c6f90761ca4a |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2011-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-7e9c603ef6a04778a533c6f90761ca4a2025-02-03T10:08:00ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382011-06-012910.1260/0263-6174.29.5.467On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous SolutionMarta Haro0Belén Cabal1José B. Parra2Conchi O. Ania3 Instituto Nacional del Carbón (INCAR-CSIC), C/Francisco Pintado Fe, 26, 33011 Oviedo, Spain Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Campus de la Cantoblanco, 28049 Madrid, Spain Instituto Nacional del Carbón (INCAR-CSIC), C/Francisco Pintado Fe, 26, 33011 Oviedo, Spain Instituto Nacional del Carbón (INCAR-CSIC), C/Francisco Pintado Fe, 26, 33011 Oviedo, SpainThe purpose of the present work was to explore the removal of three polycyclic aromatic hydrocarbons (naphthalene, fluorene and acenaphtene) (PAHs) from aqueous solution onto an activated carbon. The adsorption performance of these compounds (both kinetic and equilibrium) has been discussed in terms of their chemical and physical properties. The results showed that the rate of adsorption was strongly dependent on the molecular size of the hydrocarbons. Thus, for example, steric hindrances associated with acenaphthene inhibited the accessibility of this compound to the high-energy sites. Under equilibrium conditions, the uptake seemed to be governed by the carbon–PAH affinity, as the lowest uptake was obtained for naphthalene which displayed the fastest adsorption rate. The interactions between the studied pollutants and the activated carbon seemed to be controlled by two factors, viz. aromaticity and water solubility. As a general rule, the higher the number of aromatic rings in the polycyclic hydrocarbon, the more favoured the adsorbate–carbon interactions. Analysis of the carbon after adsorption of the studied hydrocarbons indicated that the accessibility restrictions to the porosity of the carbon can also lead to weaker interactions with the activated carbon.https://doi.org/10.1260/0263-6174.29.5.467 |
| spellingShingle | Marta Haro Belén Cabal José B. Parra Conchi O. Ania On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution Adsorption Science & Technology |
| title | On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution |
| title_full | On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution |
| title_fullStr | On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution |
| title_full_unstemmed | On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution |
| title_short | On the Adsorption Kinetics and Equilibrium of Polyaromatic Hydrocarbons from Aqueous Solution |
| title_sort | on the adsorption kinetics and equilibrium of polyaromatic hydrocarbons from aqueous solution |
| url | https://doi.org/10.1260/0263-6174.29.5.467 |
| work_keys_str_mv | AT martaharo ontheadsorptionkineticsandequilibriumofpolyaromatichydrocarbonsfromaqueoussolution AT belencabal ontheadsorptionkineticsandequilibriumofpolyaromatichydrocarbonsfromaqueoussolution AT josebparra ontheadsorptionkineticsandequilibriumofpolyaromatichydrocarbonsfromaqueoussolution AT conchioania ontheadsorptionkineticsandequilibriumofpolyaromatichydrocarbonsfromaqueoussolution |