Abstract
The adsorption potential of clay and sandy soil to remove benzene from liquid-phase system was examined. A series of batch adsorption tests were carried out for various concentrations of benzene (50 - 250 mg/l) in tightly corked 1000 ml flasks for clay and sandy soil, respectively. Equilibrium and kinetics data were obtained from the batch experiments. Adsorption increased with increasing initial benzene concentration. The equilibrium data obtained from the adsorption of benzene were well fitted to the Freundlich isotherm model. The adsorption kinetics process showed that the kinetic model of pseudo second-order was the best fit to the experimental data. The results showed that clay and sandy soil had good potential for the removal of aromatic hydrocarbon, benzene from aqueous solution.
Highlights
Benzene, naphthalene and pyrene are a group of volatile and flammable polycyclic aromatic hydrocarbons (PAHs) which are structurally related chemicals consisting of aromatic rings with no substituent [1]
The aim of this study was to explore the possibility of using clay and sandy soil for removing polycyclic aromatic hydrocarbon from aqueous solution
The purpose of this study is to determine the extent of the bioavailability of benzene in clay and sandy soils; this is because benzene poses a potential hazard by ingestion in humans and animals
Summary
Naphthalene and pyrene are a group of volatile and flammable polycyclic aromatic hydrocarbons (PAHs) which are structurally related chemicals consisting of aromatic rings with no substituent [1]. They are capable of causing adverse effects to human health and the environment, which may be carcinogenic and/or mutagenic. Their presence in water flow even at low concentrations presents a serious environmental concern and its removal from the water is essential to ensure the safety of water supply.
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