Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk
Chemically and thermally treated rice husks were evaluated as a potential decontaminant of toxic Cd (II) in aqueous media. Rice husk (RH), a by-product from rice milling, was chemically treated with HCl and NaOH. Then, thermal treatments to 300, 500, and 700°C were applied. The chemical composition...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/5763832 |
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| author | María Camila Hoyos-Sánchez Angie Carolina Córdoba-Pacheco Luis Fernando Rodríguez-Herrera Ramiro Uribe-Kaffure |
| author_facet | María Camila Hoyos-Sánchez Angie Carolina Córdoba-Pacheco Luis Fernando Rodríguez-Herrera Ramiro Uribe-Kaffure |
| author_sort | María Camila Hoyos-Sánchez |
| collection | DOAJ |
| description | Chemically and thermally treated rice husks were evaluated as a potential decontaminant of toxic Cd (II) in aqueous media. Rice husk (RH), a by-product from rice milling, was chemically treated with HCl and NaOH. Then, thermal treatments to 300, 500, and 700°C were applied. The chemical composition and morphological characteristics of RH were evaluated by different techniques. The specific surface area analysis of RH samples by BET nitrogen adsorption method provided specific surface areas ranging from 6 to 14 m2/g. SEM, FTIR, and EDX analyses of RH were carried out to determine the surface morphology, functional groups involved in metal binding mechanism, and C/O and C/Si ratios, respectively. The maximum Cd (II) adsorption capacity was 28.27 mg/g at an optimum pH, 6.0. The kinetic studies revealed that adsorption process followed the pseudo-second-order kinetic model. |
| format | Article |
| id | doaj-art-31de3d182e164e0381f4ea2c22debcc1 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-31de3d182e164e0381f4ea2c22debcc12025-02-03T01:01:36ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/57638325763832Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice HuskMaría Camila Hoyos-Sánchez0Angie Carolina Córdoba-Pacheco1Luis Fernando Rodríguez-Herrera2Ramiro Uribe-Kaffure3Department of Biology, University of Tolima, Altos de Santa Helena, C. P. 730006 Ibagué, ColombiaDepartment of Biology, University of Tolima, Altos de Santa Helena, C. P. 730006 Ibagué, ColombiaDepartment of Chemistry, University of Tolima, Altos de Santa Helena, C. P. 730006 Ibagué, ColombiaDepartment of Physics, University of Tolima, Altos de Santa Helena, C. P. 730006 Ibagué, ColombiaChemically and thermally treated rice husks were evaluated as a potential decontaminant of toxic Cd (II) in aqueous media. Rice husk (RH), a by-product from rice milling, was chemically treated with HCl and NaOH. Then, thermal treatments to 300, 500, and 700°C were applied. The chemical composition and morphological characteristics of RH were evaluated by different techniques. The specific surface area analysis of RH samples by BET nitrogen adsorption method provided specific surface areas ranging from 6 to 14 m2/g. SEM, FTIR, and EDX analyses of RH were carried out to determine the surface morphology, functional groups involved in metal binding mechanism, and C/O and C/Si ratios, respectively. The maximum Cd (II) adsorption capacity was 28.27 mg/g at an optimum pH, 6.0. The kinetic studies revealed that adsorption process followed the pseudo-second-order kinetic model.http://dx.doi.org/10.1155/2017/5763832 |
| spellingShingle | María Camila Hoyos-Sánchez Angie Carolina Córdoba-Pacheco Luis Fernando Rodríguez-Herrera Ramiro Uribe-Kaffure Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk Journal of Chemistry |
| title | Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk |
| title_full | Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk |
| title_fullStr | Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk |
| title_full_unstemmed | Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk |
| title_short | Removal of Cd (II) from Aqueous Media by Adsorption onto Chemically and Thermally Treated Rice Husk |
| title_sort | removal of cd ii from aqueous media by adsorption onto chemically and thermally treated rice husk |
| url | http://dx.doi.org/10.1155/2017/5763832 |
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