Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent
Abstract Introduction: Dyes are among the most hazardous chemicals in industrial wastesdue to their toxicity for aquaculture, reduction of light permeability, and in turn development of disorders in photosynthesis process. The current study aimed to investigate the efficiency of coral in removing r...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Shahid Sadoughi University of Medical Sciences
2016-06-01
|
| Series: | Journal of Community Health Research |
| Subjects: | |
| Online Access: | http://jhr.ssu.ac.ir/browse.php?a_code=A-10-1105-3&slc_lang=en&sid=1 |
| _version_ | 1818197666923806720 |
|---|---|
| author | Mohammad Malakootian Somayeh Mohammadi Najme Amirmahani Zahra Nasiri Alireza Nasiri |
| author_facet | Mohammad Malakootian Somayeh Mohammadi Najme Amirmahani Zahra Nasiri Alireza Nasiri |
| author_sort | Mohammad Malakootian |
| collection | DOAJ |
| description | Abstract
Introduction: Dyes are among the most hazardous chemicals in industrial wastesdue to their toxicity for aquaculture, reduction of light permeability, and in turn development of disorders in photosynthesis process. The current study aimed to investigate the efficiency of coral in removing red reactive 198 from textile dye wastewater was investigated.
Materials & Methods: In this experimental study, the adsorption process was completedperformed on a synthetic sample in a batch systemOptimal conditions was also performed on the real wastewater of Yazdbaf textile factory. The effects of such parameters as the pH, dye's concentration, contact time, sorbent's dose, and temperature were investigated, following this, adsorption isotherms were determined and then the process was examined kinetically and thermodynamically. Next, the study data was analyzed by SPSS (ver,21), EXCEL 2007, applying Pearson correlation coefficient.
Results: The optimal conditions in removing the dye included pH=3, an equilibrium contact time of 120 min, 25 mg/L of the dye's concentration, and 3g/100mg of the sorbent's initial value. Underthe optimal conditions, the dye's removal efficiency and the maximum adsorption capacity in the synthetic and real wastewater sample of Yazdbaf Company were 97.63%, 8.14 mg/g and 67.78%, 5mg/g respectively.The equilibrium data followed the Langmuir adsorption isotherm with a correlation coefficient of R2=0.96 and the adsorption's kinetics followed pseudo-second-order model with a correlation coefficient of 1 (R2=1). The thermodynamic investigations also indicated that the adsorption is of physical process an endothermic.
Conclusion: Asthe results revealed, the good performance of the coral sorbent in removing dyes in aquatic environments, enjoying suitable density, havingquick precipitation properties, not needing activation, and environmental safety of the process can encourage the efficiency of this adsorbent in treatment of dye-containing wastewaters. |
| first_indexed | 2024-12-12T01:53:37Z |
| format | Article |
| id | doaj.art-750055bf67b345feb778e9699b52af70 |
| institution | Directory Open Access Journal |
| issn | 2322-5688 2345-2609 |
| language | English |
| last_indexed | 2024-12-12T01:53:37Z |
| publishDate | 2016-06-01 |
| publisher | Shahid Sadoughi University of Medical Sciences |
| record_format | Article |
| series | Journal of Community Health Research |
| spelling | doaj.art-750055bf67b345feb778e9699b52af702022-12-22T00:42:26ZengShahid Sadoughi University of Medical SciencesJournal of Community Health Research2322-56882345-26092016-06-01527389Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural SorbentMohammad Malakootian0Somayeh Mohammadi1Najme Amirmahani2Zahra Nasiri3Alireza Nasiri4 Abstract Introduction: Dyes are among the most hazardous chemicals in industrial wastesdue to their toxicity for aquaculture, reduction of light permeability, and in turn development of disorders in photosynthesis process. The current study aimed to investigate the efficiency of coral in removing red reactive 198 from textile dye wastewater was investigated. Materials & Methods: In this experimental study, the adsorption process was completedperformed on a synthetic sample in a batch systemOptimal conditions was also performed on the real wastewater of Yazdbaf textile factory. The effects of such parameters as the pH, dye's concentration, contact time, sorbent's dose, and temperature were investigated, following this, adsorption isotherms were determined and then the process was examined kinetically and thermodynamically. Next, the study data was analyzed by SPSS (ver,21), EXCEL 2007, applying Pearson correlation coefficient. Results: The optimal conditions in removing the dye included pH=3, an equilibrium contact time of 120 min, 25 mg/L of the dye's concentration, and 3g/100mg of the sorbent's initial value. Underthe optimal conditions, the dye's removal efficiency and the maximum adsorption capacity in the synthetic and real wastewater sample of Yazdbaf Company were 97.63%, 8.14 mg/g and 67.78%, 5mg/g respectively.The equilibrium data followed the Langmuir adsorption isotherm with a correlation coefficient of R2=0.96 and the adsorption's kinetics followed pseudo-second-order model with a correlation coefficient of 1 (R2=1). The thermodynamic investigations also indicated that the adsorption is of physical process an endothermic. Conclusion: Asthe results revealed, the good performance of the coral sorbent in removing dyes in aquatic environments, enjoying suitable density, havingquick precipitation properties, not needing activation, and environmental safety of the process can encourage the efficiency of this adsorbent in treatment of dye-containing wastewaters.http://jhr.ssu.ac.ir/browse.php?a_code=A-10-1105-3&slc_lang=en&sid=1YAZDBAF factory Reactive Red 198 Adsorption Coral Limestone Kinetics Thermodynamics |
| spellingShingle | Mohammad Malakootian Somayeh Mohammadi Najme Amirmahani Zahra Nasiri Alireza Nasiri Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent Journal of Community Health Research YAZDBAF factory Reactive Red 198 Adsorption Coral Limestone Kinetics Thermodynamics |
| title | Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent |
| title_full | Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent |
| title_fullStr | Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent |
| title_full_unstemmed | Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent |
| title_short | Kinetics, Thermodynamics and Equilibrium Studies on Adsorption of Reactive Red 198 from Textile Wastewater by Coral Limestone as a Natural Sorbent |
| title_sort | kinetics thermodynamics and equilibrium studies on adsorption of reactive red 198 from textile wastewater by coral limestone as a natural sorbent |
| topic | YAZDBAF factory Reactive Red 198 Adsorption Coral Limestone Kinetics Thermodynamics |
| url | http://jhr.ssu.ac.ir/browse.php?a_code=A-10-1105-3&slc_lang=en&sid=1 |
| work_keys_str_mv | AT mohammadmalakootian kineticsthermodynamicsandequilibriumstudiesonadsorptionofreactivered198fromtextilewastewaterbycorallimestoneasanaturalsorbent AT somayehmohammadi kineticsthermodynamicsandequilibriumstudiesonadsorptionofreactivered198fromtextilewastewaterbycorallimestoneasanaturalsorbent AT najmeamirmahani kineticsthermodynamicsandequilibriumstudiesonadsorptionofreactivered198fromtextilewastewaterbycorallimestoneasanaturalsorbent AT zahranasiri kineticsthermodynamicsandequilibriumstudiesonadsorptionofreactivered198fromtextilewastewaterbycorallimestoneasanaturalsorbent AT alirezanasiri kineticsthermodynamicsandequilibriumstudiesonadsorptionofreactivered198fromtextilewastewaterbycorallimestoneasanaturalsorbent |