A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances
In this work, the biosorption mechanism of the cationic dye Methylene Blue (MB) on natural White Pine sawdust (NS) (Pinus durangensis) was investigated. Likewise, the surface charge distribution of NS was determined, and its point of zero charge was found to be 4.3. Besides, the capacity of the NS f...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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2017
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| Online Access: | http://eprints.uanl.mx/14610/1/115.pdf |
| _version_ | 1824414097223974912 |
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| author | González Ramírez, Rosa G. Smith, Neale R. Askin, Ronald G. Camacho Vallejo, José Fernando González Velarde, José Luis |
| author_facet | González Ramírez, Rosa G. Smith, Neale R. Askin, Ronald G. Camacho Vallejo, José Fernando González Velarde, José Luis |
| author_sort | González Ramírez, Rosa G. |
| collection | Repositorio Institucional |
| description | In this work, the biosorption mechanism of the cationic dye Methylene Blue (MB) on natural White Pine sawdust (NS) (Pinus durangensis) was investigated. Likewise, the surface charge distribution of NS was determined, and its point of zero charge was found to be 4.3. Besides, the capacity of the NS for adsorbing MB was increased 1.7, 2.0 and 4.6 times when the pH was raised from 3 to 4.25, 3 to 7 and 3 to 10, respectively. This behavior was attributed to the electrostatic attraction between the negatively charged surface of NS and the cationic species MBþ. The adsorption capacity increased with increased temperature because the adsorption was an endothermic process. The adsorption capacity was drastically reduced by increasing the ionic strength of the solution corroborating with the fact that the electrostatic attractions played a crucial role in the adsorption of MB on NS. It was also shown that the MB was chemisorbed because the adsorption was not reversible. The predominant adsorption mechanisms were the electrostatic attraction and chemisorption and not ion exchange. © 2016 Chinese Institute of Environmental Engineering, Taiwan. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). |
| format | Article |
| id | eprints-14610 |
| institution | UANL |
| language | English |
| publishDate | 2017 |
| record_format | eprints |
| spelling | eprints-146102021-09-24T20:22:45Z http://eprints.uanl.mx/14610/ A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances González Ramírez, Rosa G. Smith, Neale R. Askin, Ronald G. Camacho Vallejo, José Fernando González Velarde, José Luis TJ Ingeniería Mecánica In this work, the biosorption mechanism of the cationic dye Methylene Blue (MB) on natural White Pine sawdust (NS) (Pinus durangensis) was investigated. Likewise, the surface charge distribution of NS was determined, and its point of zero charge was found to be 4.3. Besides, the capacity of the NS for adsorbing MB was increased 1.7, 2.0 and 4.6 times when the pH was raised from 3 to 4.25, 3 to 7 and 3 to 10, respectively. This behavior was attributed to the electrostatic attraction between the negatively charged surface of NS and the cationic species MBþ. The adsorption capacity increased with increased temperature because the adsorption was an endothermic process. The adsorption capacity was drastically reduced by increasing the ionic strength of the solution corroborating with the fact that the electrostatic attractions played a crucial role in the adsorption of MB on NS. It was also shown that the MB was chemisorbed because the adsorption was not reversible. The predominant adsorption mechanisms were the electrostatic attraction and chemisorption and not ion exchange. © 2016 Chinese Institute of Environmental Engineering, Taiwan. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). 2017 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/14610/1/115.pdf http://eprints.uanl.mx/14610/1.haspreviewThumbnailVersion/115.pdf González Ramírez, Rosa G. y Smith, Neale R. y Askin, Ronald G. y Camacho Vallejo, José Fernando y González Velarde, José Luis (2017) A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances. Mathematical Problems in Engineering, 2017. pp. 1-13. ISSN 1024-123X http://doi.org/10.1155/2017/4708135 doi:10.1155/2017/4708135 |
| spellingShingle | TJ Ingeniería Mecánica González Ramírez, Rosa G. Smith, Neale R. Askin, Ronald G. Camacho Vallejo, José Fernando González Velarde, José Luis A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| title_full | A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| title_fullStr | A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| title_full_unstemmed | A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| title_short | A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances |
| title_sort | grasp tabu heuristic approach to territory design for pickup and delivery operations for large scale instances |
| topic | TJ Ingeniería Mecánica |
| url | http://eprints.uanl.mx/14610/1/115.pdf |
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