Abstract
In this research, static adsorption of three polycyclic aromatic hydrocarbons (PAHs), naphthalene, acenaphthene, and fluorene, from aqueous solutions onto hypercrosslinked polymeric adsorbent within the temperature range of 288–308 K is investigated. Several isotherm equations are correlated with the equilibrium data, and the experimental data is found to fit the Polanyi-Dubinin-Manes model best within the entire range of concentrations, providing evidence that pore-filling is the dominating sorption mechanism for PAHs. The study shows that the molecular size of adsorbates has distinct influence on adsorption capacity of hypercrosslinked polymeric adsorbent for the PAHs; the larger the adsorbate molecular size, the lower the adsorption equilibrium capacity. Based on the Polanyi-Dubinin-Manes model, the molecular size of adsorbates was introduced to adjust the adsorbate molar volume. Plots of q v vs. (σε/V s) are collapsed to a single correlation curve for different adsorbates on hypercrosslinked polymeric resin.
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Supported by the National Natural Science Foundation of China (Grant No. 50408025)
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Long, C., Li, A., Hu, D. et al. Description of adsorption equilibrium of PAHs on hypercrosslinked polymeric adsorbent using Polanyi potential theory. Sci. China Ser. B-Chem. 51, 586–592 (2008). https://doi.org/10.1007/s11426-007-0111-z
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DOI: https://doi.org/10.1007/s11426-007-0111-z