Influence of Ca2+ on tetracycline adsorption on montmorillonite
- Autores
- Parolo, Maria Eugenia; Avena, Marcelo Javier; Pettinari, Gisela Roxana; Baschini, Miria Teresita
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The adsorption of tetracycline (TC) on montmorillonite was studied as a function of pH and Ca 2+ concentration using a batch technique complemented with X-ray diffraction and transmission electron microscopy. In the absence of Ca 2+, TC adsorption was high at low pH and decreased as the pH increased. In the presence of Ca 2+, at least two different adsorption processes took place in the studied systems, i.e., cation exchange and Ca-bridging. Cation exchange was the prevailing process at pH<5, and thus, TC adsorption decreased by increasing total Ca 2+ concentration. On the contrary, Ca-bridging was the prevailing process at pH>5, and thus, TC adsorption increased by increasing Ca 2+ concentration. The pH 5 represents an isoadsorption pH where both adsorption processes compensate each other. TC adsorption became independent of Ca 2+ concentration at this pH. For TC adsorption on Ca 2+-montmorillonite in 0.01M NaCl experiments, the ratio adsorbed TC/retained Ca 2+ was close to 1 in the pH range of 5-9, indicating an important participation of Ca 2+ in the binding of TC to montmorillonite. X-ray diffraction and transmission electron microscopy showed that TC adsorption induced intercalation between montmorillonite layers forming a multiphase system with stacking of layers with and without intercalated TC.
Fil: Parolo, Maria Eugenia. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina
Fil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina
Fil: Baschini, Miria Teresita. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina - Materia
-
ADSORPTION
ANTIBIOTICS
CLAYS
INTERCALATION
TETRACYCLINE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/95340
Ver los metadatos del registro completo
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Influence of Ca2+ on tetracycline adsorption on montmorilloniteParolo, Maria EugeniaAvena, Marcelo JavierPettinari, Gisela RoxanaBaschini, Miria TeresitaADSORPTIONANTIBIOTICSCLAYSINTERCALATIONTETRACYCLINEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The adsorption of tetracycline (TC) on montmorillonite was studied as a function of pH and Ca 2+ concentration using a batch technique complemented with X-ray diffraction and transmission electron microscopy. In the absence of Ca 2+, TC adsorption was high at low pH and decreased as the pH increased. In the presence of Ca 2+, at least two different adsorption processes took place in the studied systems, i.e., cation exchange and Ca-bridging. Cation exchange was the prevailing process at pH<5, and thus, TC adsorption decreased by increasing total Ca 2+ concentration. On the contrary, Ca-bridging was the prevailing process at pH>5, and thus, TC adsorption increased by increasing Ca 2+ concentration. The pH 5 represents an isoadsorption pH where both adsorption processes compensate each other. TC adsorption became independent of Ca 2+ concentration at this pH. For TC adsorption on Ca 2+-montmorillonite in 0.01M NaCl experiments, the ratio adsorbed TC/retained Ca 2+ was close to 1 in the pH range of 5-9, indicating an important participation of Ca 2+ in the binding of TC to montmorillonite. X-ray diffraction and transmission electron microscopy showed that TC adsorption induced intercalation between montmorillonite layers forming a multiphase system with stacking of layers with and without intercalated TC.Fil: Parolo, Maria Eugenia. Universidad Nacional del Comahue. Facultad de Ingeniería; ArgentinaFil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue. Facultad de Ingeniería; ArgentinaFil: Baschini, Miria Teresita. Universidad Nacional del Comahue. Facultad de Ingeniería; ArgentinaAcademic Press Inc Elsevier Science2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95340Parolo, Maria Eugenia; Avena, Marcelo Javier; Pettinari, Gisela Roxana; Baschini, Miria Teresita; Influence of Ca2+ on tetracycline adsorption on montmorillonite; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 368; 1; 2-2012; 420-4260021-9797CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S002197971101455Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2011.10.079info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:07:03Zoai:ri.conicet.gov.ar:11336/95340instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:07:04.059CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| title |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| spellingShingle |
Influence of Ca2+ on tetracycline adsorption on montmorillonite Parolo, Maria Eugenia ADSORPTION ANTIBIOTICS CLAYS INTERCALATION TETRACYCLINE |
| title_short |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| title_full |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| title_fullStr |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| title_full_unstemmed |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| title_sort |
Influence of Ca2+ on tetracycline adsorption on montmorillonite |
| dc.creator.none.fl_str_mv |
Parolo, Maria Eugenia Avena, Marcelo Javier Pettinari, Gisela Roxana Baschini, Miria Teresita |
| author |
Parolo, Maria Eugenia |
| author_facet |
Parolo, Maria Eugenia Avena, Marcelo Javier Pettinari, Gisela Roxana Baschini, Miria Teresita |
| author_role |
author |
| author2 |
Avena, Marcelo Javier Pettinari, Gisela Roxana Baschini, Miria Teresita |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
ADSORPTION ANTIBIOTICS CLAYS INTERCALATION TETRACYCLINE |
| topic |
ADSORPTION ANTIBIOTICS CLAYS INTERCALATION TETRACYCLINE |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
The adsorption of tetracycline (TC) on montmorillonite was studied as a function of pH and Ca 2+ concentration using a batch technique complemented with X-ray diffraction and transmission electron microscopy. In the absence of Ca 2+, TC adsorption was high at low pH and decreased as the pH increased. In the presence of Ca 2+, at least two different adsorption processes took place in the studied systems, i.e., cation exchange and Ca-bridging. Cation exchange was the prevailing process at pH<5, and thus, TC adsorption decreased by increasing total Ca 2+ concentration. On the contrary, Ca-bridging was the prevailing process at pH>5, and thus, TC adsorption increased by increasing Ca 2+ concentration. The pH 5 represents an isoadsorption pH where both adsorption processes compensate each other. TC adsorption became independent of Ca 2+ concentration at this pH. For TC adsorption on Ca 2+-montmorillonite in 0.01M NaCl experiments, the ratio adsorbed TC/retained Ca 2+ was close to 1 in the pH range of 5-9, indicating an important participation of Ca 2+ in the binding of TC to montmorillonite. X-ray diffraction and transmission electron microscopy showed that TC adsorption induced intercalation between montmorillonite layers forming a multiphase system with stacking of layers with and without intercalated TC. Fil: Parolo, Maria Eugenia. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina Fil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina Fil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina Fil: Baschini, Miria Teresita. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina |
| description |
The adsorption of tetracycline (TC) on montmorillonite was studied as a function of pH and Ca 2+ concentration using a batch technique complemented with X-ray diffraction and transmission electron microscopy. In the absence of Ca 2+, TC adsorption was high at low pH and decreased as the pH increased. In the presence of Ca 2+, at least two different adsorption processes took place in the studied systems, i.e., cation exchange and Ca-bridging. Cation exchange was the prevailing process at pH<5, and thus, TC adsorption decreased by increasing total Ca 2+ concentration. On the contrary, Ca-bridging was the prevailing process at pH>5, and thus, TC adsorption increased by increasing Ca 2+ concentration. The pH 5 represents an isoadsorption pH where both adsorption processes compensate each other. TC adsorption became independent of Ca 2+ concentration at this pH. For TC adsorption on Ca 2+-montmorillonite in 0.01M NaCl experiments, the ratio adsorbed TC/retained Ca 2+ was close to 1 in the pH range of 5-9, indicating an important participation of Ca 2+ in the binding of TC to montmorillonite. X-ray diffraction and transmission electron microscopy showed that TC adsorption induced intercalation between montmorillonite layers forming a multiphase system with stacking of layers with and without intercalated TC. |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012-02 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/95340 Parolo, Maria Eugenia; Avena, Marcelo Javier; Pettinari, Gisela Roxana; Baschini, Miria Teresita; Influence of Ca2+ on tetracycline adsorption on montmorillonite; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 368; 1; 2-2012; 420-426 0021-9797 CONICET Digital CONICET |
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http://hdl.handle.net/11336/95340 |
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Parolo, Maria Eugenia; Avena, Marcelo Javier; Pettinari, Gisela Roxana; Baschini, Miria Teresita; Influence of Ca2+ on tetracycline adsorption on montmorillonite; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 368; 1; 2-2012; 420-426 0021-9797 CONICET Digital CONICET |
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eng |
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eng |
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openAccess |
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application/pdf application/pdf application/pdf application/pdf |
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Academic Press Inc Elsevier Science |
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Academic Press Inc Elsevier Science |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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