Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method
Background and Purpose: PAHs and their derivatives have a complex and stable molecular structure with low biodegradability and have from the compounds in the crude oil. The object of this study was to evaluation of efficiency of persulfate activated with ultrasonic waves in Phenanthrene degradation...
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| Format: | Article |
| Language: | fas |
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Alborz University of Medical Sciences
2018-09-01
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| Series: | Muhandisī-i Bihdāsht-i Muḥīṭ |
| Subjects: | |
| Online Access: | http://jehe.abzums.ac.ir/browse.php?a_code=A-10-97-18&slc_lang=en&sid=1 |
| _version_ | 1818252052370817024 |
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| author | Motahareh Harati Roshanak Rezaei Kalantary |
| author_facet | Motahareh Harati Roshanak Rezaei Kalantary |
| author_sort | Motahareh Harati |
| collection | DOAJ |
| description | Background and Purpose: PAHs and their derivatives have a complex and stable molecular structure with low biodegradability and have from the compounds in the crude oil. The object of this study was to evaluation of efficiency of persulfate activated with ultrasonic waves in Phenanthrene degradation from Soil environments by central composite design.
Methods: The soil samples were homogenized and filtered using a 2.0 mm sieve. Then, Phenanthrene solution (PHE) was added into soil sample. In order to carry out the chemical oxidation process, Probe Ultrasonic Wave Generator place out inside the reaction chamber Contains Persulfate/soil slurry environment. A central composite design (CCD) was used for designing and optimizing the operation parameters such as sodium Persulfate concentration, Ultrasound intensity and contact time. The synergy of processes in the system was also studied in optimal conditions.
Results: ANOVA results indicated that the effect of persulfate concentration, ultrasound intensity and contact time and binary interactions were significant. The Persulfate concentration, has the most significant effect on the phenanthrene degradation. The highest efficacy of the phenanthrene degradation (%58.05) was obtained in the conditions: initial concentration of persulfate =0.2 mol, ultrasonic waves with power = %70, and contact time = 120 min. By applying S2O8-2 in a separate approach after 120 min the efficiency was 9.2% while at these conditions, the efficiency of the ultrasonic process was only 3.4%. By contrast, the combined PS/US process could remove %58.05 of phenanthrene.
Conclusion: The results of this study indicated that, the application of the PS/US process is an effective method for purification of Phenanthrene contaminated soils. |
| first_indexed | 2024-12-12T16:18:03Z |
| format | Article |
| id | doaj.art-a1d4e6ca1b084e6b9d807848562bda47 |
| institution | Directory Open Access Journal |
| issn | 2383-3211 |
| language | fas |
| last_indexed | 2024-12-12T16:18:03Z |
| publishDate | 2018-09-01 |
| publisher | Alborz University of Medical Sciences |
| record_format | Article |
| series | Muhandisī-i Bihdāsht-i Muḥīṭ |
| spelling | doaj.art-a1d4e6ca1b084e6b9d807848562bda472022-12-22T00:19:02ZfasAlborz University of Medical SciencesMuhandisī-i Bihdāsht-i Muḥīṭ2383-32112018-09-0154309322Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design MethodMotahareh Harati0Roshanak Rezaei Kalantary1 PhD Student in Environmental Health Engineering, Faculty of Public Health, Iran University of Medical Sciences, Tehran, Iran Professor, Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran Background and Purpose: PAHs and their derivatives have a complex and stable molecular structure with low biodegradability and have from the compounds in the crude oil. The object of this study was to evaluation of efficiency of persulfate activated with ultrasonic waves in Phenanthrene degradation from Soil environments by central composite design. Methods: The soil samples were homogenized and filtered using a 2.0 mm sieve. Then, Phenanthrene solution (PHE) was added into soil sample. In order to carry out the chemical oxidation process, Probe Ultrasonic Wave Generator place out inside the reaction chamber Contains Persulfate/soil slurry environment. A central composite design (CCD) was used for designing and optimizing the operation parameters such as sodium Persulfate concentration, Ultrasound intensity and contact time. The synergy of processes in the system was also studied in optimal conditions. Results: ANOVA results indicated that the effect of persulfate concentration, ultrasound intensity and contact time and binary interactions were significant. The Persulfate concentration, has the most significant effect on the phenanthrene degradation. The highest efficacy of the phenanthrene degradation (%58.05) was obtained in the conditions: initial concentration of persulfate =0.2 mol, ultrasonic waves with power = %70, and contact time = 120 min. By applying S2O8-2 in a separate approach after 120 min the efficiency was 9.2% while at these conditions, the efficiency of the ultrasonic process was only 3.4%. By contrast, the combined PS/US process could remove %58.05 of phenanthrene. Conclusion: The results of this study indicated that, the application of the PS/US process is an effective method for purification of Phenanthrene contaminated soils.http://jehe.abzums.ac.ir/browse.php?a_code=A-10-97-18&slc_lang=en&sid=1Phenanthrene S2O82- ultrasonic waves soil |
| spellingShingle | Motahareh Harati Roshanak Rezaei Kalantary Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method Muhandisī-i Bihdāsht-i Muḥīṭ Phenanthrene S2O82- ultrasonic waves soil |
| title | Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method |
| title_full | Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method |
| title_fullStr | Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method |
| title_full_unstemmed | Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method |
| title_short | Evaluation of Efficiency of Persulfate Activated with Ultrasonic Waves in Phenanthrene Degradation from Soil Environments by Central Composite Design Method |
| title_sort | evaluation of efficiency of persulfate activated with ultrasonic waves in phenanthrene degradation from soil environments by central composite design method |
| topic | Phenanthrene S2O82- ultrasonic waves soil |
| url | http://jehe.abzums.ac.ir/browse.php?a_code=A-10-97-18&slc_lang=en&sid=1 |
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