Study of the Surface Charge of a Porous Clay Heterostructure (PCH) and Its Adsorption Capacity of Alkaline Metals
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Sociedad Química de México
2010
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876427973406490624 |
|---|---|
| author | Sofía Arellano-Cárdenas |
| author_facet | Sofía Arellano-Cárdenas |
| contents | Study of the Surface Charge of a Porous Clay Heterostructure (PCH) and Its Adsorption Capacity of Alkaline Metals Sofía Arellano-Cárdenas Tzayhrí Gallardo-Velázquez Guillermo Osorio-Revilla Ma. del Socorro López-Cortez Multidisciplinaria (Ciencias Naturales y Exactas) PCH Clay surface charge metal adsorption A Porous Clay Heterostructure (PCH) was prepared by chemical modification of a natural clay, by intercalation of a cationic surfactant. Its surface charge properties as well as its adsorption capacity for alkali metals were studied using a potentiometric titration method. The PCH developed a pH-dependent charge (sH), probably due to the presence of amphoteric silanol groups (SiO2) coming from the pillars of silica interlayered during the pillared process. The PCH presented a region of zero charge in the range of pH of 4.0 to 7.7. The sH acquired by the PCH was adjusted with good correlation to the electric double layer model of Gouy-Chapman (r2 = 0.9925). The surface charge conferred the PCH ion exchange capacity for the studied metals (Li, Na, K, Rb and Cs) at high pH values (10 < pH), in comparable quantities (3.5 to 6 meq/g) to some Dowex resins. The results of this study suggest that PCH could have applications in the recovery of toxic metals from waste waters. 2010 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47519864005 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.54 |
| format | Artículo científico |
| id | redalyc_47519864005 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Sociedad Química de México |
| spellingShingle | Study of the Surface Charge of a Porous Clay Heterostructure (PCH) and Its Adsorption Capacity of Alkaline Metals Sofía Arellano-Cárdenas Multidisciplinaria (Ciencias Naturales y Exactas) PCH Clay surface charge metal adsorption Study of the Surface Charge of a Porous Clay Heterostructure (PCH) and Its Adsorption Capacity of Alkaline Metals Sofía Arellano-Cárdenas Tzayhrí Gallardo-Velázquez Guillermo Osorio-Revilla Ma. del Socorro López-Cortez Multidisciplinaria (Ciencias Naturales y Exactas) PCH Clay surface charge metal adsorption A Porous Clay Heterostructure (PCH) was prepared by chemical modification of a natural clay, by intercalation of a cationic surfactant. Its surface charge properties as well as its adsorption capacity for alkali metals were studied using a potentiometric titration method. The PCH developed a pH-dependent charge (sH), probably due to the presence of amphoteric silanol groups (SiO2) coming from the pillars of silica interlayered during the pillared process. The PCH presented a region of zero charge in the range of pH of 4.0 to 7.7. The sH acquired by the PCH was adjusted with good correlation to the electric double layer model of Gouy-Chapman (r2 = 0.9925). The surface charge conferred the PCH ion exchange capacity for the studied metals (Li, Na, K, Rb and Cs) at high pH values (10 < pH), in comparable quantities (3.5 to 6 meq/g) to some Dowex resins. The results of this study suggest that PCH could have applications in the recovery of toxic metals from waste waters. 2010 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47519864005 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.54 |
| title | Study of the Surface Charge of a Porous Clay Heterostructure (PCH) and Its Adsorption Capacity of Alkaline Metals |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) PCH Clay surface charge metal adsorption |
| url | https://www.redalyc.org/articulo.oa?id=47519864005 |