Abstract
The adsorption of cobalt on two synthesized mesoporous activated carbons (MCSG60A and MCSG60B) and one commercial activated carbon (F-400) was studied. Mesoporous activated carbons were synthesized by pyrolysis using sucrose and silica gel as template. These carbons showed adequate structural properties, pore size in the range of mesoporous, as well as suitable surface chemistry with high negative charge density, for cation adsorption. Synthesized mesoporous activated carbons make possible to reach 90% cobalt removal from aqueous solutions, in only 15 min. Adsorption kinetics data were fitted by a pseudo-second order model. A double-Langmuir model was applied to the Co adsorption equilibrium data on MCSG60A. The isotherm was described by an H-4 Giles type model, characteristic of multilayer adsorption. The maximum cobalt adsorption (4.1 mg/g) was reached on the synthesized activated carbon MCSG60A.
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This investigation has been financed by the Ministry of Economy and Competitiveness CTQ2014-59011-R (REMEWATER).
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Gómez, J.M., Díez, E., Bernabé, I. et al. Effective Adsorptive Removal of Cobalt Using Mesoporous Carbons Synthesized by Silica Gel Replica Method. Environ. Process. 5, 225–242 (2018). https://doi.org/10.1007/s40710-018-0304-9
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DOI: https://doi.org/10.1007/s40710-018-0304-9