Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon
For the purposes of this study, activated carbon was derived from pine-cone by a chemical-thermal process. Initially, its chemical and physical properties were determined before it was used for the removal of Acid Black 1 and Acid Blue 113 dyes. A batch sorption study was carried out in order to obt...
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Water and Wastewater Consulting Engineers Research Development
2011-03-01
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| Series: | آب و فاضلاب |
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| Online Access: | http://www.wwjournal.ir/article_1134_b30a1cc4212618651eb8c258654f4e05.pdf |
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| author | Mahdi Hadi Mohammad Reza Samarghandi Saeed Azizian Mohammad Taghi Samadi Reza Shokoohi Alireza Rahmani |
| author_facet | Mahdi Hadi Mohammad Reza Samarghandi Saeed Azizian Mohammad Taghi Samadi Reza Shokoohi Alireza Rahmani |
| author_sort | Mahdi Hadi |
| collection | DOAJ |
| description | For the purposes of this study, activated carbon was derived from pine-cone by a chemical-thermal process. Initially, its chemical and physical properties were determined before it was used for the removal of Acid Black 1 and Acid Blue 113 dyes. A batch sorption study was carried out in order to obtain the optimum isotherm model. The monolayer maximum saturation capacities of AB1 and AB113 dyes based on Langmuir isotherm model were determined to be 458 mg dye/g carbon and 286 mg dye/g carbon, respectively. Adsorption of dyes was also studied in a continuous-flow state using a fixed-bed column of activated carbon. The effects of operating variables such as flow rate, bed depth, and dye concentration on the column operation were studied. Data confirmed that the breakthrough curves depended on flow rate, bed depth, and initial dye concentration. Column behavior was investigated using Thomas Model and model parameters were determined by a non-linear regression method. The Langmuir and Freundlich isotherm models were used to fit the experimental data. The best fit of the adsorption isotherm data was obtained using the Langmuir model for both dyes. The results showed that Thomas Model was suitable for the description of breakthrough curves under the experimental condition. The column adsorption capacity was also compared with equilibrium adsorption capacities for each dye. |
| first_indexed | 2024-12-14T15:14:28Z |
| format | Article |
| id | doaj.art-e7cd021e991b4e828957f8a09fad4787 |
| institution | Directory Open Access Journal |
| issn | 1024-5936 2383-0905 |
| language | English |
| last_indexed | 2024-12-14T15:14:28Z |
| publishDate | 2011-03-01 |
| publisher | Water and Wastewater Consulting Engineers Research Development |
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| series | آب و فاضلاب |
| spelling | doaj.art-e7cd021e991b4e828957f8a09fad47872022-12-21T22:56:25ZengWater and Wastewater Consulting Engineers Research Developmentآب و فاضلاب1024-59362383-09052011-03-0122123341134Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated CarbonMahdi Hadi0Mohammad Reza Samarghandi1Saeed Azizian2Mohammad Taghi Samadi3Reza Shokoohi4Alireza Rahmani5Faculty Member of Environmental Health, Enironmental Health Research Center, Faculty of Public Health, Kordestan University of Medical SciencesAssist. Prof. of Environmental Health, Faculty of Public Health, Hamadan University of Medical Sciences, HamedanProf., Dept. of Chemistry, Bu-Ali University, HamedanAssoc. Prof. of Environmental Health, Faculty of Public Health, Hamedan University of Medical Sciences, HamedanAssist. Prof. of Environmental Health, Faculty of Public Health, Hamadan University of Medical Sciences, HamedanAssoc. Prof. of Environmental Health, Faculty of Public Health, Hamedan University of Medical Sciences, HamedanFor the purposes of this study, activated carbon was derived from pine-cone by a chemical-thermal process. Initially, its chemical and physical properties were determined before it was used for the removal of Acid Black 1 and Acid Blue 113 dyes. A batch sorption study was carried out in order to obtain the optimum isotherm model. The monolayer maximum saturation capacities of AB1 and AB113 dyes based on Langmuir isotherm model were determined to be 458 mg dye/g carbon and 286 mg dye/g carbon, respectively. Adsorption of dyes was also studied in a continuous-flow state using a fixed-bed column of activated carbon. The effects of operating variables such as flow rate, bed depth, and dye concentration on the column operation were studied. Data confirmed that the breakthrough curves depended on flow rate, bed depth, and initial dye concentration. Column behavior was investigated using Thomas Model and model parameters were determined by a non-linear regression method. The Langmuir and Freundlich isotherm models were used to fit the experimental data. The best fit of the adsorption isotherm data was obtained using the Langmuir model for both dyes. The results showed that Thomas Model was suitable for the description of breakthrough curves under the experimental condition. The column adsorption capacity was also compared with equilibrium adsorption capacities for each dye.http://www.wwjournal.ir/article_1134_b30a1cc4212618651eb8c258654f4e05.pdfDye adsorptionFixed –Bed ColumnThomas ModelAcidic Dyes |
| spellingShingle | Mahdi Hadi Mohammad Reza Samarghandi Saeed Azizian Mohammad Taghi Samadi Reza Shokoohi Alireza Rahmani Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon آب و فاضلاب Dye adsorption Fixed –Bed Column Thomas Model Acidic Dyes |
| title | Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon |
| title_full | Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon |
| title_fullStr | Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon |
| title_full_unstemmed | Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon |
| title_short | Using Thomas Model to Evaluate Dye Removal from Aqueous Solutions in Fixed-bed Columns of Activated Carbon |
| title_sort | using thomas model to evaluate dye removal from aqueous solutions in fixed bed columns of activated carbon |
| topic | Dye adsorption Fixed –Bed Column Thomas Model Acidic Dyes |
| url | http://www.wwjournal.ir/article_1134_b30a1cc4212618651eb8c258654f4e05.pdf |
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