Removal of Cu(II) from Aqueous Solution Using a Micaceous Mineral of Kenyan Origin
A micaceous mineral (MicaM) available locally in Kenya was utilized as an inexpensive and effective adsorbent for the removal of Cu 2+ ions from aqueous solution. The effects of contact time, pH, temperature, adsorbate and adsorbent concentrations, and the concentration of electrolyte on the removal...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2003-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361703322404412 |
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| Summary: | A micaceous mineral (MicaM) available locally in Kenya was utilized as an inexpensive and effective adsorbent for the removal of Cu 2+ ions from aqueous solution. The effects of contact time, pH, temperature, adsorbate and adsorbent concentrations, and the concentration of electrolyte on the removal of Cu 2+ ions were studied. Maximum removal of Cu 2+ ions occurred over the pH range 4.0–7.0. The adsorption of Cu 2+ ions increased with an increase in the dose ratio of mineral to Cu 2+ ion concentration and decreased with adsorbent particle size. Isotherm analysis of the adsorption data obtained at 25°C showed that the adsorption of Cu 2+ ions on MicaM followed both the Langmuir and Freundlich isotherms. The uptake of Cu 2+ ions increased on increasing the pH of the solution from 1.5 to 7.0 as well as on increasing the temperature from 25°C to 60°C. An adsorption capacity of 0.850 g/g was achieved for MicaM towards the Cu 2+ ion. This study has demonstrated that locally abundant micaceous mineral can be used as an effective adsorbent for the treatment of waters containing Cu 2+ ions without any prior chemical pretreatment. |
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| ISSN: | 0263-6174 2048-4038 |