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Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon
BACKGROUND: Low cost 2,4-Dichlorophenolyxacetic acid (2,4-D) widely used in controlling broad-leafed weeds is frequently detected in water resources. The main objectives of this research were focused on evaluating the feasibility of using granular activated carbon modified with acid to remove 2,4-D...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3895795/ https://www.ncbi.nlm.nih.gov/pubmed/24410737 http://dx.doi.org/10.1186/2052-336X-12-28 |
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author | Dehghani, Mansooreh Nasseri, Simin Karamimanesh, Mojtaba |
author_facet | Dehghani, Mansooreh Nasseri, Simin Karamimanesh, Mojtaba |
author_sort | Dehghani, Mansooreh |
collection | PubMed |
description | BACKGROUND: Low cost 2,4-Dichlorophenolyxacetic acid (2,4-D) widely used in controlling broad-leafed weeds is frequently detected in water resources. The main objectives of this research were focused on evaluating the feasibility of using granular activated carbon modified with acid to remove 2,4-D from aqueous phase, determining its removal efficiency and assessing the adsorption kinetics. RESULTS: The present study was conducted at bench-scale method. The influence of different pH (3–9), the effect of contact time (3–90 min), the amount of adsorbent (0.1-0.4 g), and herbicide initial concentration (0.5-3 ppm) on 2,4-D removal efficiency by the granular activated carbon were investigated. Based on the data obtained in the present study, pH of 3 and contact time of 60 min is optimal for 2,4-D removal. 2,4-D reduction rate increased rapidly by the addition of the adsorbent and decreased by herbicide initial concentration (63%). The percent of 2,4-D reduction were significantly enhanced by decreasing pH and increasing the contact time. The adsorption of 2,4-D onto the granular activated carbon conformed to Langmuir and Freundlich models, but was best fitted to type II Langmuir model (R(2) = 0.999). The second order kinetics was the best for the adsorption of 2,4-D by modified granular activated carbon with R(2) > 0.99. Regression analysis showed that all of the variables in the process have been statistically significant effect (p < 0.001). CONCLUSIONS: In conclusion, granular activated carbon modified with acid is an appropriate method for reducing the herbicide in the polluted water resources. |
format | Online Article Text |
id | pubmed-3895795 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-38957952014-01-29 Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon Dehghani, Mansooreh Nasseri, Simin Karamimanesh, Mojtaba J Environ Health Sci Eng Research Article BACKGROUND: Low cost 2,4-Dichlorophenolyxacetic acid (2,4-D) widely used in controlling broad-leafed weeds is frequently detected in water resources. The main objectives of this research were focused on evaluating the feasibility of using granular activated carbon modified with acid to remove 2,4-D from aqueous phase, determining its removal efficiency and assessing the adsorption kinetics. RESULTS: The present study was conducted at bench-scale method. The influence of different pH (3–9), the effect of contact time (3–90 min), the amount of adsorbent (0.1-0.4 g), and herbicide initial concentration (0.5-3 ppm) on 2,4-D removal efficiency by the granular activated carbon were investigated. Based on the data obtained in the present study, pH of 3 and contact time of 60 min is optimal for 2,4-D removal. 2,4-D reduction rate increased rapidly by the addition of the adsorbent and decreased by herbicide initial concentration (63%). The percent of 2,4-D reduction were significantly enhanced by decreasing pH and increasing the contact time. The adsorption of 2,4-D onto the granular activated carbon conformed to Langmuir and Freundlich models, but was best fitted to type II Langmuir model (R(2) = 0.999). The second order kinetics was the best for the adsorption of 2,4-D by modified granular activated carbon with R(2) > 0.99. Regression analysis showed that all of the variables in the process have been statistically significant effect (p < 0.001). CONCLUSIONS: In conclusion, granular activated carbon modified with acid is an appropriate method for reducing the herbicide in the polluted water resources. BioMed Central 2014-01-10 /pmc/articles/PMC3895795/ /pubmed/24410737 http://dx.doi.org/10.1186/2052-336X-12-28 Text en Copyright © 2014 Dehghani et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Dehghani, Mansooreh Nasseri, Simin Karamimanesh, Mojtaba Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title | Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title_full | Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title_fullStr | Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title_full_unstemmed | Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title_short | Removal of 2,4-Dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon |
title_sort | removal of 2,4-dichlorophenolyxacetic acid (2,4-d) herbicide in the aqueous phase using modified granular activated carbon |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3895795/ https://www.ncbi.nlm.nih.gov/pubmed/24410737 http://dx.doi.org/10.1186/2052-336X-12-28 |
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