Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system
Aims: The aim of this study was to evaluate the photocatalytic processes for cadmium (Cd 2+ ) and lead (Pb 2+ ) removal at continuous and batch system. Materials and Methods: This study was performed at laboratory scale. The reactors used in this study consisted of three parts: Ultraviolet (UV) sou...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2014-01-01
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| Series: | International Journal of Environmental Health Engineering |
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| Online Access: | http://www.ijehe.org/article.asp?issn=2277-9183;year=2014;volume=3;issue=1;spage=31;epage=31;aulast=Rahimi |
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| author | Sajad Rahimi Mohammad Ahmadian Reza Barati Nader Yousefi Seyedeh Parvin Moussavi Kamran Rahimi Sohyla Reshadat Seyed Ramin Ghasemi Nader Rajabi Gilan Ali Fatehizadeh |
| author_facet | Sajad Rahimi Mohammad Ahmadian Reza Barati Nader Yousefi Seyedeh Parvin Moussavi Kamran Rahimi Sohyla Reshadat Seyed Ramin Ghasemi Nader Rajabi Gilan Ali Fatehizadeh |
| author_sort | Sajad Rahimi |
| collection | DOAJ |
| description | Aims: The aim of this study was to evaluate the photocatalytic processes for cadmium (Cd 2+ ) and lead (Pb 2+ ) removal at continuous and batch system.
Materials and Methods: This study was performed at laboratory scale. The reactors used in this study consisted of three parts: Ultraviolet (UV) source, reaction cell, and mixing chamber. The experiments were carried out in a batch and continuous reactor for synthetic wastewater. The concentration of Cd 2+ and Pb 2+ was constant (25 mg/L) in all experiments and effect of titanium dioxide (TiO 2 ) dose, pH, and air dispersion was investigated on the removal efficiency.
Results: The results showed that with increasing TiO 2 dose and pH, the cadmium and lead removal increase. The maximum removal of cadmium and lead was obtained in TiO 2 dose 0.9 g/L and pH: 11 that were equal to 99.8 and 99.2% respectively. Furthermore, when air dispersion increased, the removal efficiency increased; while in the air dispersion 2 cm 3 /L the removal efficiency was maximum (88 and 93.2% at the contact time 56 min for Cd 2+ and Pb 2+ , respectively).
Conclusion: According to these results the TiO 2 has been considered as photocatalyst is the separable and recyclable, so UV/TiO 2 process is an environment friendly process for toxic metal removal. |
| first_indexed | 2024-12-14T01:44:59Z |
| format | Article |
| id | doaj.art-cc43ed4a4bbb419e978062f99fd5c437 |
| institution | Directory Open Access Journal |
| issn | 2277-9183 |
| language | English |
| last_indexed | 2024-12-14T01:44:59Z |
| publishDate | 2014-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | International Journal of Environmental Health Engineering |
| spelling | doaj.art-cc43ed4a4bbb419e978062f99fd5c4372022-12-21T23:21:35ZengWolters Kluwer Medknow PublicationsInternational Journal of Environmental Health Engineering2277-91832014-01-0131313110.4103/2277-9183.139756Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch systemSajad RahimiMohammad AhmadianReza BaratiNader YousefiSeyedeh Parvin MoussaviKamran RahimiSohyla ReshadatSeyed Ramin GhasemiNader Rajabi GilanAli FatehizadehAims: The aim of this study was to evaluate the photocatalytic processes for cadmium (Cd 2+ ) and lead (Pb 2+ ) removal at continuous and batch system. Materials and Methods: This study was performed at laboratory scale. The reactors used in this study consisted of three parts: Ultraviolet (UV) source, reaction cell, and mixing chamber. The experiments were carried out in a batch and continuous reactor for synthetic wastewater. The concentration of Cd 2+ and Pb 2+ was constant (25 mg/L) in all experiments and effect of titanium dioxide (TiO 2 ) dose, pH, and air dispersion was investigated on the removal efficiency. Results: The results showed that with increasing TiO 2 dose and pH, the cadmium and lead removal increase. The maximum removal of cadmium and lead was obtained in TiO 2 dose 0.9 g/L and pH: 11 that were equal to 99.8 and 99.2% respectively. Furthermore, when air dispersion increased, the removal efficiency increased; while in the air dispersion 2 cm 3 /L the removal efficiency was maximum (88 and 93.2% at the contact time 56 min for Cd 2+ and Pb 2+ , respectively). Conclusion: According to these results the TiO 2 has been considered as photocatalyst is the separable and recyclable, so UV/TiO 2 process is an environment friendly process for toxic metal removal.http://www.ijehe.org/article.asp?issn=2277-9183;year=2014;volume=3;issue=1;spage=31;epage=31;aulast=RahimiAdvanced oxidationbatch and continuous systemheavy metalstitanium dioxide nanoparticle |
| spellingShingle | Sajad Rahimi Mohammad Ahmadian Reza Barati Nader Yousefi Seyedeh Parvin Moussavi Kamran Rahimi Sohyla Reshadat Seyed Ramin Ghasemi Nader Rajabi Gilan Ali Fatehizadeh Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system International Journal of Environmental Health Engineering Advanced oxidation batch and continuous system heavy metals titanium dioxide nanoparticle |
| title | Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system |
| title_full | Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system |
| title_fullStr | Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system |
| title_full_unstemmed | Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system |
| title_short | Photocatalytic removal of cadmium (II) and lead (II) from simulated wastewater at continuous and batch system |
| title_sort | photocatalytic removal of cadmium ii and lead ii from simulated wastewater at continuous and batch system |
| topic | Advanced oxidation batch and continuous system heavy metals titanium dioxide nanoparticle |
| url | http://www.ijehe.org/article.asp?issn=2277-9183;year=2014;volume=3;issue=1;spage=31;epage=31;aulast=Rahimi |
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