Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide
In this work, a mathematical model of a fixed-bed process for elemental mercury removal from gaseous streams is proposed. Advective and diffusive processes were taken into account in the macroscopic mass balance along the bed, and diffusive process was considered in the microscopic mass balance insi...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2015-02-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.33.2.175 |
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| author | C.L.M. Camargo A.G. Oliveira N.S. Resende E.C. Biscaia A.R. Secchi F.W. Tavares V.M.M. Salim |
| author_facet | C.L.M. Camargo A.G. Oliveira N.S. Resende E.C. Biscaia A.R. Secchi F.W. Tavares V.M.M. Salim |
| author_sort | C.L.M. Camargo |
| collection | DOAJ |
| description | In this work, a mathematical model of a fixed-bed process for elemental mercury removal from gaseous streams is proposed. Advective and diffusive processes were taken into account in the macroscopic mass balance along the bed, and diffusive process was considered in the microscopic mass balance inside the adsorbent particle in which the adsorption process occurs. In addition, a chemical reaction term was used to represent the mercury fixation by the adsorbent. The proposed model was implemented in the Environment for Modelling, Simulation and Optimization dynamic simulator. Model parameters were estimated based on experimental breakthrough curves, by minimizing the least-square function. The model satisfactorily described two experimental breakthrough curves of mercury removal using adsorbents with different preparation methods, both with high mercury fixation capacity. The proposed mathematical model was also able to consistently describe the mercury concentrations in the bed and in the particle. |
| format | Article |
| id | doaj-art-c19bcb5fc1994edb8dc5ca31a9ea5b49 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2015-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-c19bcb5fc1994edb8dc5ca31a9ea5b492025-01-03T01:25:16ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382015-02-013310.1260/0263-6174.33.2.175Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper SulphideC.L.M. Camargo0A.G. Oliveira1N.S. Resende2E.C. Biscaia3A.R. Secchi4F.W. Tavares5V.M.M. Salim6 Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil Escola de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil Programa de Engenharia Química, Centro de Tecnologia, COPPE-Universidade Federal do Rio de Janeiro, Rio de Janeiro, BrasilIn this work, a mathematical model of a fixed-bed process for elemental mercury removal from gaseous streams is proposed. Advective and diffusive processes were taken into account in the macroscopic mass balance along the bed, and diffusive process was considered in the microscopic mass balance inside the adsorbent particle in which the adsorption process occurs. In addition, a chemical reaction term was used to represent the mercury fixation by the adsorbent. The proposed model was implemented in the Environment for Modelling, Simulation and Optimization dynamic simulator. Model parameters were estimated based on experimental breakthrough curves, by minimizing the least-square function. The model satisfactorily described two experimental breakthrough curves of mercury removal using adsorbents with different preparation methods, both with high mercury fixation capacity. The proposed mathematical model was also able to consistently describe the mercury concentrations in the bed and in the particle.https://doi.org/10.1260/0263-6174.33.2.175 |
| spellingShingle | C.L.M. Camargo A.G. Oliveira N.S. Resende E.C. Biscaia A.R. Secchi F.W. Tavares V.M.M. Salim Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide Adsorption Science & Technology |
| title | Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide |
| title_full | Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide |
| title_fullStr | Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide |
| title_full_unstemmed | Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide |
| title_short | Modelling of Hg Removal from Gaseous Streams and its Fixation in Hydroxyapatite-Based Adsorbents Modified with Copper Sulphide |
| title_sort | modelling of hg removal from gaseous streams and its fixation in hydroxyapatite based adsorbents modified with copper sulphide |
| url | https://doi.org/10.1260/0263-6174.33.2.175 |
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