Publisher : Korean Society of Environmental Engineering
DOI : 10.4491/eer.2014.19.2.157
Title & Authors
Batch and Flow-Through Column Studies for Cr(VI) Sorption to Activated Carbon Fiber Lee, In; Park, Jeong-Ann; Kang, Jin-Kyu; Kim, Jae-Hyun; Son, Jeong-Woo; Yi, In-Geol; Kim, Song-Bae;
The adsorption of Cr(VI) from aqueous solutions to activated carbon fiber (ACF) was investigated using both batch and flow-through column experiments. The batch experiments (adsorbent dose, 10 g/L; initial Cr(VI) concentration, 5-500 mg/L) showed that the maximum adsorption capacity of Cr(VI) to ACF was determined to 20.54 mg/g. The adsorption of Cr(VI) to ACF was sensitive to solution pH, decreasing from 9.09 to 0.66 mg/g with increasing pH from 2.6 to 9.9; the adsorption capacity was the highest at the highly acidic solution pHs. Kinetic model analysis showed that the Elovich model was the most suitable for describing the kinetic data among three (pseudo-first-order, pseudo-second-order, and Elovich) models. From the nonlinear regression analysis, the Elovich model parameter values were determined to be
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