Physicochemical interpretation of the adsorption of 4-Bromophenol and 4-Chloroaniline on an activated carbon
| Autor: | Eder C. Lima, Pascal S. Thue, Abdelmottaleb Ben Lamine, Adrian Bonilla-Petriciolet, Nilton F.G.M. Cimirro, Lotfi Sellaoui, Michael Badawi, Amira Yazidi |
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| Rok vydání: | 2020 |
| Předmět: |
Steric effects
Process Chemistry and Technology Inorganic chemistry 4-Chloroaniline 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Pollution Organic molecules chemistry.chemical_compound Adsorption Physisorption chemistry medicine Chemical Engineering (miscellaneous) Molecule 0210 nano-technology Waste Management and Disposal Adsorption energy 0105 earth and related environmental sciences Activated carbon medicine.drug |
| Zdroj: | Journal of Environmental Chemical Engineering. 8:104542 |
| ISSN: | 2213-3437 |
| Popis: | Statistical physics theory was used to interpret the adsorption mechanism of 4-Chloroaniline and 4-Bromophenol on an activated carbon which was prepared from cashew nut shell. The adsorption of these organic molecules fits with a single-layer model assuming a single adsorption energy among five mechanisms explored. Experimental data were successfully analyzed via theoretical steric and energetic parameters that were associated to the adsorption mechanisms of tested pollutants. It was concluded that parallel, non-parallel and mixed orientations could be involved for the adsorption of these adsorbates on activated carbon. Calculated adsorption energies ranged from -16.3 to -14.3 kJ/mol for these two molecules, where a physisorption process occurred. Thermodynamic adsorption functions were also studied and discussed for the removal of these organic molecules with activated carbon. Overall, this paper attributed new insights about the adsorption mechanism of the tested adsorbates on activated carbon. |
| Databáze: | OpenAIRE |
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