Removal of Cadmium Ions from Water by Synthetic Niobia
The feasibility of using synthetic niobia, both pure and modified with H 2 O 2 , as adsorbents for the removal of Cd 2+ ions from aqueous solution has been studied. Different adsorption isotherms were obtained using Cd 2+ ion concentrations ranging from 10 mg/ℓ to 500 mg/ℓ. At an initial pH value of...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2011-08-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.29.8.789 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832544656409231360 |
|---|---|
| author | Érika S. Melo Kele T.G. Carvalho Luiz C.A. Oliveira |
| author_facet | Érika S. Melo Kele T.G. Carvalho Luiz C.A. Oliveira |
| author_sort | Érika S. Melo |
| collection | DOAJ |
| description | The feasibility of using synthetic niobia, both pure and modified with H 2 O 2 , as adsorbents for the removal of Cd 2+ ions from aqueous solution has been studied. Different adsorption isotherms were obtained using Cd 2+ ion concentrations ranging from 10 mg/ℓ to 500 mg/ℓ. At an initial pH value of 4.5, the Cd 2+ ion adsorption capacity of synthetic niobia at 298 K was estimated as 182 mg/g. The Freundlich adsorption isotherm model gave the better fit to the equilibrium adsorption data for Cd 2+ ions. The thermodynamic parameters for the studied system showed that the adsorption process was spontaneous and endothermic. The results obtained suggest that niobia may be employed as an efficient material for the removal of Cd 2+ ions from aqueous solution. |
| format | Article |
| id | doaj-art-f8b997074e7c478598fdf091d33c0744 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2011-08-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-f8b997074e7c478598fdf091d33c07442025-02-03T10:07:41ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382011-08-012910.1260/0263-6174.29.8.789Removal of Cadmium Ions from Water by Synthetic NiobiaÉrika S. Melo0Kele T.G. Carvalho1Luiz C.A. Oliveira2 Department of Chemistry, Federal University of Lavras, 37200-000, Lavras, Minas Gerais, Brazil Department of Chemistry, Federal University of Lavras, 37200-000, Lavras, Minas Gerais, Brazil Department of Chemistry, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, BrazilThe feasibility of using synthetic niobia, both pure and modified with H 2 O 2 , as adsorbents for the removal of Cd 2+ ions from aqueous solution has been studied. Different adsorption isotherms were obtained using Cd 2+ ion concentrations ranging from 10 mg/ℓ to 500 mg/ℓ. At an initial pH value of 4.5, the Cd 2+ ion adsorption capacity of synthetic niobia at 298 K was estimated as 182 mg/g. The Freundlich adsorption isotherm model gave the better fit to the equilibrium adsorption data for Cd 2+ ions. The thermodynamic parameters for the studied system showed that the adsorption process was spontaneous and endothermic. The results obtained suggest that niobia may be employed as an efficient material for the removal of Cd 2+ ions from aqueous solution.https://doi.org/10.1260/0263-6174.29.8.789 |
| spellingShingle | Érika S. Melo Kele T.G. Carvalho Luiz C.A. Oliveira Removal of Cadmium Ions from Water by Synthetic Niobia Adsorption Science & Technology |
| title | Removal of Cadmium Ions from Water by Synthetic Niobia |
| title_full | Removal of Cadmium Ions from Water by Synthetic Niobia |
| title_fullStr | Removal of Cadmium Ions from Water by Synthetic Niobia |
| title_full_unstemmed | Removal of Cadmium Ions from Water by Synthetic Niobia |
| title_short | Removal of Cadmium Ions from Water by Synthetic Niobia |
| title_sort | removal of cadmium ions from water by synthetic niobia |
| url | https://doi.org/10.1260/0263-6174.29.8.789 |
| work_keys_str_mv | AT erikasmelo removalofcadmiumionsfromwaterbysyntheticniobia AT keletgcarvalho removalofcadmiumionsfromwaterbysyntheticniobia AT luizcaoliveira removalofcadmiumionsfromwaterbysyntheticniobia |