Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
228790 | Journal of Industrial and Engineering Chemistry | 2014 | 7 Pages |
Abstract
The activated carbon from apricot stone with H3PO4 and its ability to remove Co2+ are reported. The FTIR spectroscopy brings insights on interactions between the functional groups of the carbon and Co2+. Adsorption studies are carried in batch mode by varying the initial Co2+ concentration and pH. A comparison of two kinetic models on the overall adsorption rate shows that the system is described by the pseudo-second-order kinetic model. The Freundlich model fits the data with a monolayer adsorption capacity of 111.11 mg/g at pH 9. The enthalpy and free energy indicate an endothermic and not spontaneous process.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
M. Abbas, S. Kaddour, M. Trari,