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The adsorption of dibenzofuran(DBF)on three commercial granular activated carbons(GAC)was in- vestigated to correlate the adsorption equilibrium and kinetics with the morphological characteristics of activated carbons.Breakthrough experiment was conducted to determine the isotherm and kinetics of dibenzofuran on the ac- tivated carbons.All the experiment runs were performed in a fixed bed with a process temperature of 368 K.The effects of adsorbent morphological properties on the kinetics of the adsorption process were studied.The equilib- rium data are found satisfactory fitted to the Langmuir isotherm.An intraparticle diffusion model based on the ob- tained Langmuir isotherm was developed for predicting the fixed bed adsorption of dibenzofuran.The result indi- cated that this model fit all the breakthrough curves well.The surface diffusion coefficients of dibenzofuran on the activated carbon are calculated,and a relationship with the microporosity is found.As it was expected,the diben- zofuran molecule finds more kinetic restrictions for the diffusion in those carbons with narrower pore diameter.
The adsorption of dibenzofuran (DBF) on three commercial granular activated carbons (GAC) was in- vestigated to correlate the adsorption equilibrium and kinetics with the morphological characteristics of activated carbons. Breakthrough experiment was conducted to determine the isotherm and kinetics of dibenzofuran on the ac - tivated carbons.All the experiment runs were performed in a fixed bed with a process temperature of 368 K. The effects of adsorbent morphological properties on the kinetics of the adsorption process were studied. equilibri rium data are found satisfactory fitted to the Langmuir isotherm.An intraparticle diffusion model based on the ob- tained Langmuir isotherm was developed for predicting the fixed bed adsorption of dibenzofuran. The result indi- cated that this model fit all the breakthrough curves well. The diffusion factor of dibenzofuran on the activated carbon are calculated, and a relationship with the microporosity is found. As it was expected, the dibe n- zofuran molecule finds more kinetic restrictions for the diffusion in those carbons with narrower pore diameter.