Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology
Background and Objective: The activities of various industries produce a wide range of pollutants and toxic compounds. One of these compounds is the catechol, a cyclic organic compound with high toxicity and resistant to degradation. Therefore, the purpose of this study was to investigate efficiency...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2019-09-01
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| Series: | سلامت و محیط |
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| Online Access: | http://ijhe.tums.ac.ir/article-1-6174-en.html |
| _version_ | 1818606790917488640 |
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| author | S Fallah Jokandan M Yegane Badi A Esrafili A Azari E Ahmadi H Tarhandeh M Kermani |
| author_facet | S Fallah Jokandan M Yegane Badi A Esrafili A Azari E Ahmadi H Tarhandeh M Kermani |
| author_sort | S Fallah Jokandan |
| collection | DOAJ |
| description | Background and Objective: The activities of various industries produce a wide range of pollutants and toxic compounds. One of these compounds is the catechol, a cyclic organic compound with high toxicity and resistant to degradation. Therefore, the purpose of this study was to investigate efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology.
Materials and Methods: The co-precipitation method was used to synthesize magnetic powder activated carbon and its properties were analyzed by SEM and XRD analysis. Then, the effect of the parameters such as pH, contact time, absorbent dose, initial concentration of catechol and temperature on the efficiency of adsorption process were investigated using a response surface methodology (Box–Behnken). The residual concentration of catechol was measured by HPLC at 275 nm.
Results: The results showed that the maximum efficiency of the adsorption process was obtained at concentration of 20 mg/L, pH=3, contact time 90 minutes, at 25 °C and absorbent dose of 1.5 g/L. The study of isotherm and kinetics showed that the experimental data of the catechol adsorption process correlated with the Langmuir and pseudo-second order models, respectively. Thermodynamic study of the reaction also expresses the Exothermic and Spontaneous process.
Conclusion: The results showed that the adsorption process using powder activated carbon magnetized with Fe3O4 nanoparticles at acidic pH had better efficiency. As a result, the studied process as an effective, rapid and inexpensive method for removal of catechol from aqueous solutions is proposed. Due to its short reaction time, it is economically affordable process. |
| first_indexed | 2024-12-16T14:16:28Z |
| format | Article |
| id | doaj.art-2f4dbc8a4be9423d898e9eebb5650057 |
| institution | Directory Open Access Journal |
| issn | 2008-2029 2008-3718 |
| language | fas |
| last_indexed | 2024-12-16T14:16:28Z |
| publishDate | 2019-09-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | سلامت و محیط |
| spelling | doaj.art-2f4dbc8a4be9423d898e9eebb56500572022-12-21T22:28:36ZfasTehran University of Medical Sciencesسلامت و محیط2008-20292008-37182019-09-01122289306Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodologyS Fallah Jokandan0M Yegane Badi1A Esrafili2A Azari3E Ahmadi4H Tarhandeh5M Kermani6 Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran AND Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran AND Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences, Kashan, Iran AND Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences, Kashan, Iran AND Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran Department of Management, Faculty of management, Tehran University, Tehran, Iran Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran AND Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Background and Objective: The activities of various industries produce a wide range of pollutants and toxic compounds. One of these compounds is the catechol, a cyclic organic compound with high toxicity and resistant to degradation. Therefore, the purpose of this study was to investigate efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology. Materials and Methods: The co-precipitation method was used to synthesize magnetic powder activated carbon and its properties were analyzed by SEM and XRD analysis. Then, the effect of the parameters such as pH, contact time, absorbent dose, initial concentration of catechol and temperature on the efficiency of adsorption process were investigated using a response surface methodology (Box–Behnken). The residual concentration of catechol was measured by HPLC at 275 nm. Results: The results showed that the maximum efficiency of the adsorption process was obtained at concentration of 20 mg/L, pH=3, contact time 90 minutes, at 25 °C and absorbent dose of 1.5 g/L. The study of isotherm and kinetics showed that the experimental data of the catechol adsorption process correlated with the Langmuir and pseudo-second order models, respectively. Thermodynamic study of the reaction also expresses the Exothermic and Spontaneous process. Conclusion: The results showed that the adsorption process using powder activated carbon magnetized with Fe3O4 nanoparticles at acidic pH had better efficiency. As a result, the studied process as an effective, rapid and inexpensive method for removal of catechol from aqueous solutions is proposed. Due to its short reaction time, it is economically affordable process.http://ijhe.tums.ac.ir/article-1-6174-en.htmladsorptioncatecholmagnetic powder activated carboniron oxide nanoparticlesresponse surface method |
| spellingShingle | S Fallah Jokandan M Yegane Badi A Esrafili A Azari E Ahmadi H Tarhandeh M Kermani Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology سلامت و محیط adsorption catechol magnetic powder activated carbon iron oxide nanoparticles response surface method |
| title | Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| title_full | Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| title_fullStr | Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| title_full_unstemmed | Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| title_short | Investigation of the efficiency of powder activated carbon magnetized with Fe3O4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| title_sort | investigation of the efficiency of powder activated carbon magnetized with fe3o4 nanoparticles in the removal of catechol from aqueous solutions by response surface methodology |
| topic | adsorption catechol magnetic powder activated carbon iron oxide nanoparticles response surface method |
| url | http://ijhe.tums.ac.ir/article-1-6174-en.html |
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