Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water
Background and Aim: Common sources of chromium in wastewater are electroplating and leather industries. Thus, the present study aimed at investigating and comparing between chemical (H2O2) method and nano-photocatalytical(UV/ZnO) method in removing of Cr(VI) from polluted water. Materials and Method...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | fas |
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Birjand University of Medical Sciences and Health Services
2012-12-01
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| Series: | مجله دانشگاه علوم پزشکی بیرجند |
| Subjects: | |
| Online Access: | http://journal.bums.ac.ir/browse.php?a_code=A-10-699-1&slc_lang=en&sid=1 |
| _version_ | 1811232560305405952 |
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| author | Anvar Asadi Mohammad Hadi Dehghani Noushin Rastkari Simin Nasseri Amir Hossein Mahvi |
| author_facet | Anvar Asadi Mohammad Hadi Dehghani Noushin Rastkari Simin Nasseri Amir Hossein Mahvi |
| author_sort | Anvar Asadi |
| collection | DOAJ |
| description | Background and Aim: Common sources of chromium in wastewater are electroplating and leather industries. Thus, the present study aimed at investigating and comparing between chemical (H2O2) method and nano-photocatalytical(UV/ZnO) method in removing of Cr(VI) from polluted water.
Materials and Methods: In this experimental-analytical study, effective factors on reduction process such as ZnO (0.05–0.15 g/L) , H2O2 (0.5-1.5 mol/L) for UV/H2O2 process and pH(5-9) were investigated. The initial concentration of the substrate was taken 0.1-15mg/L.Stock chromate (V:6) solution was prepared through dissolving Potassium dichromate (K2Cr2O7) in originally distilled water. Residual concentrations of Cr(VI) were measured spectrophotometrically at 540nm.
Results: The results indicated that with increasing reduction agent concentration and decreasing pH, the removing efficiency increased. For low initial concentrations of Cr(VI) photocatalytic process was more effective than the chemical one, but for high initial concentration the result was the opposite.In the present study, using of these procedures was applied to natural water samples.
Conclusion: The results of this study indicated that H2O2 as a cheap and available agent and also UV/ZnO, as a friendly and without residual environmental treatment process, can be used for effective reduction of Cr(VI) to yield Cr(III). |
| first_indexed | 2024-04-12T11:04:57Z |
| format | Article |
| id | doaj.art-daa39db543f1488a8fa0765b14bba2b4 |
| institution | Directory Open Access Journal |
| issn | 1607-2197 2423-6152 |
| language | fas |
| last_indexed | 2024-04-12T11:04:57Z |
| publishDate | 2012-12-01 |
| publisher | Birjand University of Medical Sciences and Health Services |
| record_format | Article |
| series | مجله دانشگاه علوم پزشکی بیرجند |
| spelling | doaj.art-daa39db543f1488a8fa0765b14bba2b42022-12-22T03:35:50ZfasBirjand University of Medical Sciences and Health Servicesمجله دانشگاه علوم پزشکی بیرجند1607-21972423-61522012-12-01193277285Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted waterAnvar Asadi0Mohammad Hadi Dehghani1Noushin Rastkari2Simin Nasseri3Amir Hossein Mahvi4 Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Solid Waste, Tehran University of Medical Sciences, Tehran, Iran. Institute for Environmental Research, Center for Air Pollution, Tehran University of Medical Sciences, Tehran, Iran. Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Water Quality, Tehran University of Medical Sciences, Tehran, Iran. Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Solid Waste, Tehran University of Medical Sciences, Tehran, Iran. Background and Aim: Common sources of chromium in wastewater are electroplating and leather industries. Thus, the present study aimed at investigating and comparing between chemical (H2O2) method and nano-photocatalytical(UV/ZnO) method in removing of Cr(VI) from polluted water. Materials and Methods: In this experimental-analytical study, effective factors on reduction process such as ZnO (0.05–0.15 g/L) , H2O2 (0.5-1.5 mol/L) for UV/H2O2 process and pH(5-9) were investigated. The initial concentration of the substrate was taken 0.1-15mg/L.Stock chromate (V:6) solution was prepared through dissolving Potassium dichromate (K2Cr2O7) in originally distilled water. Residual concentrations of Cr(VI) were measured spectrophotometrically at 540nm. Results: The results indicated that with increasing reduction agent concentration and decreasing pH, the removing efficiency increased. For low initial concentrations of Cr(VI) photocatalytic process was more effective than the chemical one, but for high initial concentration the result was the opposite.In the present study, using of these procedures was applied to natural water samples. Conclusion: The results of this study indicated that H2O2 as a cheap and available agent and also UV/ZnO, as a friendly and without residual environmental treatment process, can be used for effective reduction of Cr(VI) to yield Cr(III).http://journal.bums.ac.ir/browse.php?a_code=A-10-699-1&slc_lang=en&sid=1Hydrogen peroxide UV ZnO Hexavalent chromium polluted water |
| spellingShingle | Anvar Asadi Mohammad Hadi Dehghani Noushin Rastkari Simin Nasseri Amir Hossein Mahvi Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water مجله دانشگاه علوم پزشکی بیرجند Hydrogen peroxide UV ZnO Hexavalent chromium polluted water |
| title | Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| title_full | Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| title_fullStr | Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| title_full_unstemmed | Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| title_short | Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| title_sort | comparison of potentiality of zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water |
| topic | Hydrogen peroxide UV ZnO Hexavalent chromium polluted water |
| url | http://journal.bums.ac.ir/browse.php?a_code=A-10-699-1&slc_lang=en&sid=1 |
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