Influence of cationic surfactant on adsorption of Cr(VI) onto activated carbon
- Influence of cationic surfactant on adsorption of Cr(VI) onto activated carbon
- 최현덕; 조정민; 백기태; 양중석; 이재영
- activated carbon; surfactant; Cr(VI); chromate; adsorption kinetic; adsorption isotherm
- Issue Date
- Journal of hazardous materials
- VOL 161, NO 2-3, 1565-1568
- The effect of a cationic surfactant on the adsorption of Cr(VI) on activated carbon was investigated using cetylpyridinium chloride (CPC). At a concentration below the critical micelle concentration (CMC) of CPC, the adsorption of CPC and Cr(VI) reached equilibrium within 60 min, while it took 180 min at the concentration above CMC. CPC decreased the adsorption rate of Cr(VI) and increased the adsorption amount of Cr(VI) onto activated carbon. To analyze adsorption phenomena of Cr(VI), adsorption kinetic and isotherm were used and fitted well with the pseudo-second order kinetic model and Langmuir adsorption model, respectively. CPC introduced a cationic functional group on the surface of activated carbon and provided an adsorption site for Cr(VI).
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