Uptake of Reactive Black 5 by pumice and walnut activated carbon: Chemistry and adsorption mechanisms
| Author | Heibati, Behzad |
| Author | Rodriguez-Couto, Susana |
| Author | Amrane, Abdeltif |
| Author | Rafatullah, Mohd. |
| Author | Hawari, Alaa |
| Author | Al-Ghouti, Mohammad A. |
| Available date | 2023-05-23T09:39:14Z |
| Publication Date | 2014 |
| Publication Name | Journal of Industrial and Engineering Chemistry |
| Resource | Scopus |
| Abstract | The potential of using pumice and walnut wood activated carbon as low-cost adsorbents for the removal of the diazo dye Reactive Black 5 (RB5) from aqueous solutions was investigated. The Langmuir isotherm fit to the data specified the presence of two different natures of adsorption sites with different binding energies on the AC-W surface. Kinetic modelling showed that the adsorption behaviour and mechanism of RB5 for both adsorbents is believed to happen via surface adsorption followed by diffusion into the pores of the AC-W and pumice. The main adsorption mechanisms are hydrogen bonding, electrostatic bonding and n–π interactions. |
| Sponsor | The authors would like to thank Tehran University of Medical Sciences (Iran) for the financial support. The authors would also like to thank Professor Yuh-Shan Ho from the department of Environmental Sciences, College of Environmental Science and Engineering, Peking University, China for his helpful and suggestions regarding the modification methods. |
| Language | en |
| Publisher | Elsevier |
| Subject | Adsorption mechanisms Azo dyes Isotherm and kinetic models Pumice and walnut wood activated carbon |
| Type | Article |
| Pagination | 2939-2947 |
| Issue Number | 5 |
| Volume Number | 20 |
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