Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite
An organobentonite was prepared by adsorbing the cationic surfactant hexadecyltrimethylammonium bromide (HDTMA) onto the surface of a calcium bentonite. The adsorption capacity of the organobentonite towards 2,4-dichlorophenoxyacetic acid (2,4-D), phenol and the dichromate ion (HCrO − 4 ) from aqueo...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publications
2006-10-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361706781355000 |
| _version_ | 1797283410219106304 |
|---|---|
| author | Araceli Jacobo-Azuara Roberto Leyva-Ramos Erika Padilla-Ortega Antonio Aragón-Piña Rosa Maria Guerrero-Coronado Jovita Mendoza-Barron |
| author_facet | Araceli Jacobo-Azuara Roberto Leyva-Ramos Erika Padilla-Ortega Antonio Aragón-Piña Rosa Maria Guerrero-Coronado Jovita Mendoza-Barron |
| author_sort | Araceli Jacobo-Azuara |
| collection | DOAJ |
| description | An organobentonite was prepared by adsorbing the cationic surfactant hexadecyltrimethylammonium bromide (HDTMA) onto the surface of a calcium bentonite. The adsorption capacity of the organobentonite towards 2,4-dichlorophenoxyacetic acid (2,4-D), phenol and the dichromate ion (HCrO − 4 ) from aqueous solutions was investigated. The Langmuir isotherm gave a reasonable fit to the experimental data for the sorption of 2,4-D, phenol and the HCrO − 4 ion onto the organobentonite. The adsorption equilibrium data for 2,4-D demonstrated bimodal adsorption for equilibrium concentrations of 2,4-D greater than 650 mg/l. The capacity of the organobentonite for sorbing 2,4-D, phenol and the HCrO − 4 ion was considerably higher than that of the bentonite. This capacity was compared to that of a commercial activated carbon (F-400), from which it was concluded that modification of the bentonite substantially enhanced its adsorption capacity whereas the capacity of the organobentonite was lower than that of the F-400 carbon. |
| first_indexed | 2024-03-07T17:30:41Z |
| format | Article |
| id | doaj.art-0861f0a750614f31ae10631f096bcf6e |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T17:30:41Z |
| publishDate | 2006-10-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-0861f0a750614f31ae10631f096bcf6e2024-03-02T17:55:01ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382006-10-012410.1260/026361706781355000Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an OrganobentoniteAraceli Jacobo-Azuara0Roberto Leyva-Ramos1Erika Padilla-Ortega2Antonio Aragón-Piña3Rosa Maria Guerrero-Coronado4Jovita Mendoza-Barron5 Centro de Investigacion y Estudios de Posgrado, Facultad de Ciencias Quimicas, UASLP, Av. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, SLP, Mexico DMASC, Instituto Potosino de Investigacion Cientifica y Tecnologica, Camino a la Presa de San Jose, Col. Lomas 4a Seccion, San Luis Potosí 78216, SLP, Mexico Centro de Investigacion y Estudios de Posgrado, Facultad de Ciencias Quimicas, UASLP, Av. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, SLP, Mexico Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, SLP, Mexico Centro de Investigacion y Estudios de Posgrado, Facultad de Ciencias Quimicas, UASLP, Av. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, SLP, Mexico Centro de Investigacion y Estudios de Posgrado, Facultad de Ciencias Quimicas, UASLP, Av. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, SLP, MexicoAn organobentonite was prepared by adsorbing the cationic surfactant hexadecyltrimethylammonium bromide (HDTMA) onto the surface of a calcium bentonite. The adsorption capacity of the organobentonite towards 2,4-dichlorophenoxyacetic acid (2,4-D), phenol and the dichromate ion (HCrO − 4 ) from aqueous solutions was investigated. The Langmuir isotherm gave a reasonable fit to the experimental data for the sorption of 2,4-D, phenol and the HCrO − 4 ion onto the organobentonite. The adsorption equilibrium data for 2,4-D demonstrated bimodal adsorption for equilibrium concentrations of 2,4-D greater than 650 mg/l. The capacity of the organobentonite for sorbing 2,4-D, phenol and the HCrO − 4 ion was considerably higher than that of the bentonite. This capacity was compared to that of a commercial activated carbon (F-400), from which it was concluded that modification of the bentonite substantially enhanced its adsorption capacity whereas the capacity of the organobentonite was lower than that of the F-400 carbon.https://doi.org/10.1260/026361706781355000 |
| spellingShingle | Araceli Jacobo-Azuara Roberto Leyva-Ramos Erika Padilla-Ortega Antonio Aragón-Piña Rosa Maria Guerrero-Coronado Jovita Mendoza-Barron Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite Adsorption Science & Technology |
| title | Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite |
| title_full | Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite |
| title_fullStr | Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite |
| title_full_unstemmed | Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite |
| title_short | Removal of Toxic Pollutants from Aqueous Solutions by Adsorption onto an Organobentonite |
| title_sort | removal of toxic pollutants from aqueous solutions by adsorption onto an organobentonite |
| url | https://doi.org/10.1260/026361706781355000 |
| work_keys_str_mv | AT aracelijacoboazuara removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite AT robertoleyvaramos removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite AT erikapadillaortega removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite AT antonioaragonpina removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite AT rosamariaguerrerocoronado removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite AT jovitamendozabarron removaloftoxicpollutantsfromaqueoussolutionsbyadsorptionontoanorganobentonite |