| Autor: |
Sousa FW; Laboratório de Análise Traço, Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Campus do Pici, Centro de Ciências, Bloco 940-CEP: 60451-970 Fortaleza, Ceará, Brazil., Sousa MJ, Oliveira IR, Oliveira AG, Cavalcante RM, Fechine PB, Neto VO, de Keukeleire D, Nascimento RF |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of environmental management [J Environ Manage] 2009 Aug; Vol. 90 (11), pp. 3340-4. Date of Electronic Publication: 2009 Jun 17. |
| DOI: |
10.1016/j.jenvman.2009.05.016 |
| Abstrakt: |
In this study, sugar cane residue or bagasse was used for removal of toxic metal ions from wastewater of an electroplating factory located in northeast Brazil. Prior acid treatment increased the adsorption efficacies in batch wise experiments. The microstructure of the material before and after the treatment was investigated by X-ray diffraction, infrared spectroscopy and scanning electron microscopy. Column operations showed that removals of Cu(2+), Ni(2+) and Zn(2+) from wastewater (in the absence of cyanide) were 95.5%, 96.3.0%, and 97.1%, respectively. Regeneration of the adsorbent obtained in acid indicated that the efficiencies decreased only after the fourth cycle of re-use. Acid-treated sugar cane bagasse can be considered a viable alternative to common methods to remove toxic metal ions from aqueous effluents of electroplating industries. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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