New Polymer Materials as a Novel Superadsorbent for Removal of PAHs from Aqueous Solutions

چکیده مقاله

Global attention to water pollution from harmful chemicals has increased in recent decades. Many kinds of pollutants have been discovered in aquatic environments such as rivers, ponds and seas. Various mono and polycyclic aromatic compounds have been found in aquatic environments. Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants that are formed by the incomplete combustion of organic materials, such as wood or fossil fuels.1 PAHs are of concern because many of them are toxic, carcinogenic, and they tend to bioaccumulate in aquatic organisms.2 In this study the removal of PAHs from simulated and real wastewater using two polymers based adsorbent (polymer 1 and polymer 2) has been investigated under specific experimental conditions in batch mode. We have synthesized a polymer based adsorbent in order to develop an effective process to removal of naphthalene, acenaphthylene and phenanthrene from simulated and real wastewater in batch reactor. The adsorption isotherm of the adsorbents in single and ternary solution, adsorption kinetics, and potential of the adsorbents in the removal of PAHs from synthetic and real wastewater were investigated. Freundlich model and Langmuir model were used to study the adsorption isotherms in single adsorption system. The adsorption process of selected PAHs adsorbates on the polymer 1 and polymer 2 were well described by the Langmuir equation. The equilibrium can be established rapidly and within 45 minutes. The adsorption experiment results on simulated and real wastewaters proved that synthesized polymeric adsorbent could to be a highly efficient adsorbents and could be easily used for the rapidly removal of PAHs from dilute refinery effluents.