Removal of Pb(II) in Aqueous Solutions Using Synthesized Zeolite X from Ecuadorian Clay
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional de Colombia
2021
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| _version_ | 1876426350833696768 |
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| author | Daniel F. Medina-Rodríguez |
| author_facet | Daniel F. Medina-Rodríguez |
| contents | Removal of Pb(II) in Aqueous Solutions Using Synthesized Zeolite X from Ecuadorian Clay Daniel F. Medina-Rodríguez Delly M. San Martin-Torres Carmen M. López de García Luis V. García-Berfon Silvio D. Aguilar-Ramírez Ximena V. Jaramillo-Fierro Daniel J. Rosado-Alcarria Adriana L. Garcia-López Ingeniería heavy metals Pb(II) removal alkaline fusion zeolite synthesis Zeolite X was synthesized from clay using the alkaline fusion method and hydrothermal treatment to remove Pb(II) in aqueous solutions. Clay and zeolite were characterized through X-ray diffraction and fluorescence (XRD, FRX), as well as through specific surface area (SSA). The adsorbents were prepared as cylindrical extrudates using clay and a clay-zeolite combination (60-40%, respectively). The effects of pH, isotherm, and adsorption kinetics on the removal of Pb(II) in solutions of 80 mg Pb(II)/L were studied. It was possible to obtain a zeolite X from clay, with an SSA of 376 m2/g, 30 times greater than that of clay (12 m2/g). In the combined extrudate was present the zeolitic structure, with an SSA 12 times higher compared to the clay extrudate. The adsorption capacity, at 30 °C and V/m ratio of 1 g/L, is almost double compared to the clay extrudate (24 mg Pb(II)/g vs. 13 mg Pb(II)/g). Adsorption follows second order kinetics, and the Langmuir isotherm equation showed a good fit with the experimental equilibrium data for the two extrudates. The Webber-Morris and Bangham-Burt's models suggest that pore and film diffusion influence the kinetic mechanism. 2021 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64379873008 https://www.redalyc.org/journal/643/64379873008/ https://www.redalyc.org/journal/643/64379873008/html/ https://www.redalyc.org/journal/643/64379873008/64379873008.epub https://www.redalyc.org/journal/643/64379873008/movil 10.15446/ing.investig.v41n2.89671 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.41 |
| format | Artículo científico |
| id | redalyc_64379873008 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Removal of Pb(II) in Aqueous Solutions Using Synthesized Zeolite X from Ecuadorian Clay Daniel F. Medina-Rodríguez Ingeniería heavy metals Pb(II) removal alkaline fusion zeolite synthesis Removal of Pb(II) in Aqueous Solutions Using Synthesized Zeolite X from Ecuadorian Clay Daniel F. Medina-Rodríguez Delly M. San Martin-Torres Carmen M. López de García Luis V. García-Berfon Silvio D. Aguilar-Ramírez Ximena V. Jaramillo-Fierro Daniel J. Rosado-Alcarria Adriana L. Garcia-López Ingeniería heavy metals Pb(II) removal alkaline fusion zeolite synthesis Zeolite X was synthesized from clay using the alkaline fusion method and hydrothermal treatment to remove Pb(II) in aqueous solutions. Clay and zeolite were characterized through X-ray diffraction and fluorescence (XRD, FRX), as well as through specific surface area (SSA). The adsorbents were prepared as cylindrical extrudates using clay and a clay-zeolite combination (60-40%, respectively). The effects of pH, isotherm, and adsorption kinetics on the removal of Pb(II) in solutions of 80 mg Pb(II)/L were studied. It was possible to obtain a zeolite X from clay, with an SSA of 376 m2/g, 30 times greater than that of clay (12 m2/g). In the combined extrudate was present the zeolitic structure, with an SSA 12 times higher compared to the clay extrudate. The adsorption capacity, at 30 °C and V/m ratio of 1 g/L, is almost double compared to the clay extrudate (24 mg Pb(II)/g vs. 13 mg Pb(II)/g). Adsorption follows second order kinetics, and the Langmuir isotherm equation showed a good fit with the experimental equilibrium data for the two extrudates. The Webber-Morris and Bangham-Burt's models suggest that pore and film diffusion influence the kinetic mechanism. 2021 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64379873008 https://www.redalyc.org/journal/643/64379873008/ https://www.redalyc.org/journal/643/64379873008/html/ https://www.redalyc.org/journal/643/64379873008/64379873008.epub https://www.redalyc.org/journal/643/64379873008/movil 10.15446/ing.investig.v41n2.89671 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.41 |
| title | Removal of Pb(II) in Aqueous Solutions Using Synthesized Zeolite X from Ecuadorian Clay |
| topic | Ingeniería heavy metals Pb(II) removal alkaline fusion zeolite synthesis |
| url | https://www.redalyc.org/articulo.oa?id=64379873008 https://www.redalyc.org/journal/643/64379873008/ https://www.redalyc.org/journal/643/64379873008/html/ https://www.redalyc.org/journal/643/64379873008/64379873008.epub https://www.redalyc.org/journal/643/64379873008/movil |