Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes
Emulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mechanisms are very complex due to the high number of m...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/1/66 |
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| author | Gerardo León Elisa Gómez Beatriz Miguel Asunción María Hidalgo María Gómez María Dolores Murcia María Amelia Guzmán |
| author_facet | Gerardo León Elisa Gómez Beatriz Miguel Asunción María Hidalgo María Gómez María Dolores Murcia María Amelia Guzmán |
| author_sort | Gerardo León |
| collection | DOAJ |
| description | Emulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mechanisms are very complex due to the high number of model parameters. Starting from an analysis of the similarity between the elemental mechanisms of carrier-mediated transport in liquid membranes and of transport in adsorption processes, this paper presents an experimental analysis of the possibility of applying kinetic and mechanistic models developed for adsorption to carrier-mediated transport in emulsion liquid membranes. We study the removal of a target species, in this case, Cu(II), by emulsion liquid membranes containing membrane phase solutions of benzoylacetone (carrier agent), Span 80 (emulsifying agent) and kerosene (diluent), and hydrochloric acid as a stripping agent in the product phase. The experimental results fit the pseudo-second-order adsorption kinetic model, showing good relationships between the experimental and model parameters. Although both Cu(II) diffusion through the feed/membrane interface boundary layer and complex Cu-benzoylacetone diffusion through the membrane phase controls Cu(II) transport, it is the former step that mainly controls the transport process. |
| first_indexed | 2024-03-10T00:58:42Z |
| format | Article |
| id | doaj.art-6c1b50dfdd2a4cd09ad1f808ccee17f2 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T00:58:42Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-6c1b50dfdd2a4cd09ad1f808ccee17f22023-11-23T14:38:48ZengMDPI AGMembranes2077-03752022-01-011216610.3390/membranes12010066Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid MembranesGerardo León0Elisa Gómez1Beatriz Miguel2Asunción María Hidalgo3María Gómez4María Dolores Murcia5María Amelia Guzmán6Departamento de Ingeniería Química y Ambiental, Universidad Politécnica de Cartagena, Paseo Alfonso XIII 52, 30206 Cartagena, SpainDepartamento de Ingeniería Química, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainDepartamento de Ingeniería Química y Ambiental, Universidad Politécnica de Cartagena, Paseo Alfonso XIII 52, 30206 Cartagena, SpainDepartamento de Ingeniería Química, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainDepartamento de Ingeniería Química, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainDepartamento de Ingeniería Química, Campus de Espinardo, Universidad de Murcia, 30100 Murcia, SpainDepartamento de Ingeniería Química y Ambiental, Universidad Politécnica de Cartagena, Paseo Alfonso XIII 52, 30206 Cartagena, SpainEmulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mechanisms are very complex due to the high number of model parameters. Starting from an analysis of the similarity between the elemental mechanisms of carrier-mediated transport in liquid membranes and of transport in adsorption processes, this paper presents an experimental analysis of the possibility of applying kinetic and mechanistic models developed for adsorption to carrier-mediated transport in emulsion liquid membranes. We study the removal of a target species, in this case, Cu(II), by emulsion liquid membranes containing membrane phase solutions of benzoylacetone (carrier agent), Span 80 (emulsifying agent) and kerosene (diluent), and hydrochloric acid as a stripping agent in the product phase. The experimental results fit the pseudo-second-order adsorption kinetic model, showing good relationships between the experimental and model parameters. Although both Cu(II) diffusion through the feed/membrane interface boundary layer and complex Cu-benzoylacetone diffusion through the membrane phase controls Cu(II) transport, it is the former step that mainly controls the transport process.https://www.mdpi.com/2077-0375/12/1/66emulsion liquid membranescarrier-mediated transportadsorptionkineticmechanism |
| spellingShingle | Gerardo León Elisa Gómez Beatriz Miguel Asunción María Hidalgo María Gómez María Dolores Murcia María Amelia Guzmán Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes Membranes emulsion liquid membranes carrier-mediated transport adsorption kinetic mechanism |
| title | Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes |
| title_full | Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes |
| title_fullStr | Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes |
| title_full_unstemmed | Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes |
| title_short | Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes |
| title_sort | feasibility of adsorption kinetic models to study carrier mediated transport of heavy metal ions in emulsion liquid membranes |
| topic | emulsion liquid membranes carrier-mediated transport adsorption kinetic mechanism |
| url | https://www.mdpi.com/2077-0375/12/1/66 |
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