Adsorption Thermodynamics of Cr(VI) Removal by Using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidad Nacional de Colombia
2020
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876481494611918848 |
|---|---|
| author | Angel Villabona-Ortíz |
| author_facet | Angel Villabona-Ortíz |
| contents | Adsorption Thermodynamics of Cr(VI) Removal by Using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels Angel Villabona-Ortíz Candelaria Tejada-Tovar Rodrigo Ortega-Toro Ingeniería Adsorption heavy metal temperature batch system bioadsorbent The effect of temperature on the adsorption of Cr (VI) was determined with waste materials from the agro-industry, such as palm bagasse and plantain peels, by determining the thermodynamic parameters which allow to establish the mechanisms that control the process. The methodology included an initial preparation of the biomass, its characterization, and subsequent adsorption tests by setting the initial concentration of the metal to 100 ppm, a particle size of 0,5 mm, a biomass amount of 0,325 g, pH 2, and a volume of 100 mL. The process temperature varied between 303,15, and 352,15 K. The concentration of the remaining metal in the solution was performed using the diphenyl carbazide colorimetric method through a UV-Vis spectroscopy at a wavelength of 540 nm. The results show that the effect of temperature does not present a defined trend for palm bagasse, whereas it is linear for adsorption using plantain peels. Furthermore, the process of adsorption of Cr (VI) with palm bagasse is more favorable at higher temperatures, since it is a spontaneous process with a physical adsorption mechanism. On the other hand, the adsorption process with plantain peels is thermodynamically feasible at temperatures from 40 to 55 °C and not spontaneous at higher temperatures. Also, a physicochemical adsorption mechanism was evinced. It is concluded that the use of the studied materials is possible in the removal of the Cr (VI) ion in aqueous solutions. 2020 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64379866002 https://www.redalyc.org/journal/643/64379866002/ https://www.redalyc.org/journal/643/64379866002/html/ https://www.redalyc.org/journal/643/64379866002/64379866002.epub https://www.redalyc.org/journal/643/64379866002/movil 10.15446/ing.investig.v40n3.83709 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.3 Vol.40 |
| format | Artículo científico |
| id | redalyc_64379866002 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Adsorption Thermodynamics of Cr(VI) Removal by Using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels Angel Villabona-Ortíz Ingeniería Adsorption heavy metal temperature batch system bioadsorbent Adsorption Thermodynamics of Cr(VI) Removal by Using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels Angel Villabona-Ortíz Candelaria Tejada-Tovar Rodrigo Ortega-Toro Ingeniería Adsorption heavy metal temperature batch system bioadsorbent The effect of temperature on the adsorption of Cr (VI) was determined with waste materials from the agro-industry, such as palm bagasse and plantain peels, by determining the thermodynamic parameters which allow to establish the mechanisms that control the process. The methodology included an initial preparation of the biomass, its characterization, and subsequent adsorption tests by setting the initial concentration of the metal to 100 ppm, a particle size of 0,5 mm, a biomass amount of 0,325 g, pH 2, and a volume of 100 mL. The process temperature varied between 303,15, and 352,15 K. The concentration of the remaining metal in the solution was performed using the diphenyl carbazide colorimetric method through a UV-Vis spectroscopy at a wavelength of 540 nm. The results show that the effect of temperature does not present a defined trend for palm bagasse, whereas it is linear for adsorption using plantain peels. Furthermore, the process of adsorption of Cr (VI) with palm bagasse is more favorable at higher temperatures, since it is a spontaneous process with a physical adsorption mechanism. On the other hand, the adsorption process with plantain peels is thermodynamically feasible at temperatures from 40 to 55 °C and not spontaneous at higher temperatures. Also, a physicochemical adsorption mechanism was evinced. It is concluded that the use of the studied materials is possible in the removal of the Cr (VI) ion in aqueous solutions. 2020 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64379866002 https://www.redalyc.org/journal/643/64379866002/ https://www.redalyc.org/journal/643/64379866002/html/ https://www.redalyc.org/journal/643/64379866002/64379866002.epub https://www.redalyc.org/journal/643/64379866002/movil 10.15446/ing.investig.v40n3.83709 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.3 Vol.40 |
| title | Adsorption Thermodynamics of Cr(VI) Removal by Using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels |
| topic | Ingeniería Adsorption heavy metal temperature batch system bioadsorbent |
| url | https://www.redalyc.org/articulo.oa?id=64379866002 https://www.redalyc.org/journal/643/64379866002/ https://www.redalyc.org/journal/643/64379866002/html/ https://www.redalyc.org/journal/643/64379866002/64379866002.epub https://www.redalyc.org/journal/643/64379866002/movil |