Adsorption of -Dihydroxybenzene from Single, Binary and Ternary Aqueous Systems onto Activated Charcoal
| Autor: | Khalil A. Halhouli, Naif A. Darwish, Ya'rub Y. Al-Jahmani |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Adsorption Science & Technology, Vol 23 (2005) |
| Druh dokumentu: | article |
| ISSN: | 0263-6174 2048-4038 |
| DOI: | 10.1260/0263617053737190 |
| Popis: | The adsorption of para -dihydroxybenzene ( p -DHB) from aqueous multi-component systems onto activated charcoal was investigated. The study involved the adsorption of p -DHB from systems containing all combinations of p -DHB, phenol and 4-amino-1-naphthalene sulphonic acid sodium salt (ANSA) in aqueous solutions. Equilibrium isotherms were generated at three temperature values (30°C, 40°C and 55°C). As expected for exothermic physical adsorption, the adsorption of p -DHB from the single-component system and from the binary system containing ANSA decreased with increasing temperature. However, the adsorption of p -DHB from the binary system containing phenol increased with temperature. The effect of KCl and NaCl (at a concentration of 0.05 M) at 30°C was also investigated. The adsorption of p -DHB varied from one system to another. Both salts reduced the adsorption of p -DHB from the single and binary systems. The reduction in adsorption capacity (relative to the adsorption capacity in a salt-free system) attained only ca. 35% in the case of single-solute adsorption and ca. 20% and 33% from the binary systems containing p -DHB and phenol or ANSA, respectively. In contrast, the presence of KCl or NaCl had no appreciable effect on the adsorption of p -DHB from the ternary system. |
| Databáze: | Directory of Open Access Journals |
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