Activated Clay as an Adsorbent for Cationic Dyestuffs
| Autor: | H.M. Ismail, Mohammad S. El-Geundi, K.M.E. Attyia |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Aqueous solution
Chromatography Chemistry General Chemical Engineering lcsh:QD450-801 Cationic polymerization lcsh:Physical and theoretical chemistry 02 engineering and technology Surfaces and Interfaces General Chemistry 010501 environmental sciences 01 natural sciences Adsorption 020401 chemical engineering 0204 chemical engineering 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Adsorption Science & Technology, Vol 12 (1995) |
| ISSN: | 2048-4038 0263-6174 |
| DOI: | 10.1177/026361749501200203 |
| Popis: | The adsorption of cationic dyestuffs (Basic Blue 69 and Basic Red 22) from aqueous solution by natural and activated clays has been investigated. The maximum adsorption capacity (qmax) of BB 69 and BR 22 on to natural clay was 390 mg/g and 365 mg/g, respectively. The natural clay was treated with H2O2 and HCl to enhance its adsorption capacity for dyestuffs. The efficiency of activation with H2O2 was greater by a factor of 23% and 13% in the case of BB 69 and BR 22, respectively, when compared with natural clay. The efficiency of activation with HCl was superior by 30% and 16% in the case of BB 69 and BR 22, respectively, relative to natural clay. The adsorption capacity has been correlated with the pore structure and the surface charge. The results obtained show that the adsorption capacity is independent of the SBET values but depends on the surface charge. |
| Databáze: | OpenAIRE |
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