Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution
Aims: This study was aimed to determine the TiO 2 /zeolite photocatalytic activity for removing red Safranin dye form aqueous phase. Materials and Methods: In this study, TiO 2 nanoparticles were produced using sol-gel method and 2.5 ml sol-gel was coated on 1.2222 g of zeolite. X-ray diffraction (...
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Wolters Kluwer Medknow Publications
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doaj-d351911f6c5842a48994629ba94d3f3e2020-11-24T23:21:39ZengWolters Kluwer Medknow PublicationsInternational Journal of Environmental Health Engineering 2277-91832015-01-01414410.4103/2277-9183.153989Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solutionMasoud RismanchianSamira BarakatNima KhoshzatReza KeshavarziMahnaz ShakerianAims: This study was aimed to determine the TiO 2 /zeolite photocatalytic activity for removing red Safranin dye form aqueous phase. Materials and Methods: In this study, TiO 2 nanoparticles were produced using sol-gel method and 2.5 ml sol-gel was coated on 1.2222 g of zeolite. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were applied to specify the structure and morphology of TiO 2 nanoparticles. The effect of TiO 2 coating on zeolite, ultraviolet (UV) radiation intensity, initial concentration of dye and the type of photocatalyst substrate (fixed and moving) on photocatalytic process was investigated. Results: According to XRD results, the TiO 2 nanoparticles had two phases including anatase (80.5%) and rutile (19.5%). The uniformity of nanoparticles was obvious in the SEM images. The removal efficiency of TiO 2 coated on zeolite was higher than TiO 2 photocatalysis with increasing UV radiation intensity from 2.4 w/m 2 to 3.9 w/m 2 , the photocatalytic efficiency was also enhanced. The removal efficiency decreased from 91.61% to 77.91% by increasing the red Safranin dye concentration from 10 mg/L to 50 mg/L. The moving bed of TiO 2 /zeolite photocatalyst had a higher efficiency than the fixed bed. Conclusion: In over all, the TiO 2 /zeolite photocatalyst was much more effective than TiO 2 photocatalyst for Safranin dye removal from the aqueous phase. With increasing UV radiation intensity and decreasing dye concentration photocatalytic efficiency, was improved. TiO 2 /zeolite photocatalyst with fixed bed is recommended to be used in water treatment. The most important problem of using moving-bed TiO 2 /zeolite photocatalyst in the water treatment is opacity.http://www.ijehe.org/article.asp?issn=2277-9183;year=2015;volume=4;issue=1;spage=4;epage=4;aulast=RismanchianPhotocatalystred Safranin dyeTiO2 nanoparticlesultraviolet radiationzeolite |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Masoud Rismanchian Samira Barakat Nima Khoshzat Reza Keshavarzi Mahnaz Shakerian |
spellingShingle |
Masoud Rismanchian Samira Barakat Nima Khoshzat Reza Keshavarzi Mahnaz Shakerian Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution International Journal of Environmental Health Engineering Photocatalyst red Safranin dye TiO2 nanoparticles ultraviolet radiation zeolite |
author_facet |
Masoud Rismanchian Samira Barakat Nima Khoshzat Reza Keshavarzi Mahnaz Shakerian |
author_sort |
Masoud Rismanchian |
title |
Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution |
title_short |
Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution |
title_full |
Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution |
title_fullStr |
Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution |
title_full_unstemmed |
Investigation of TiO 2 /zeolite photocatalytic activity for Safranin dye removal of aqueous solution |
title_sort |
investigation of tio 2 /zeolite photocatalytic activity for safranin dye removal of aqueous solution |
publisher |
Wolters Kluwer Medknow Publications |
series |
International Journal of Environmental Health Engineering |
issn |
2277-9183 |
publishDate |
2015-01-01 |
description |
Aims: This study was aimed to determine the TiO 2 /zeolite photocatalytic activity for removing red Safranin dye form aqueous phase.
Materials and Methods: In this study, TiO 2 nanoparticles were produced using sol-gel method and 2.5 ml sol-gel was coated on 1.2222 g of zeolite. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were applied to specify the structure and morphology of TiO 2 nanoparticles. The effect of TiO 2 coating on zeolite, ultraviolet (UV) radiation intensity, initial concentration of dye and the type of photocatalyst substrate (fixed and moving) on photocatalytic process was investigated.
Results: According to XRD results, the TiO 2 nanoparticles had two phases including anatase (80.5%) and rutile (19.5%). The uniformity of nanoparticles was obvious in the SEM images. The removal efficiency of TiO 2 coated on zeolite was higher than TiO 2 photocatalysis with increasing UV radiation intensity from 2.4 w/m 2 to 3.9 w/m 2 , the photocatalytic efficiency was also enhanced. The removal efficiency decreased from 91.61% to 77.91% by increasing the red Safranin dye concentration from 10 mg/L to 50 mg/L. The moving bed of TiO 2 /zeolite photocatalyst had a higher efficiency than the fixed bed.
Conclusion: In over all, the TiO 2 /zeolite photocatalyst was much more effective than TiO 2 photocatalyst for Safranin dye removal from the aqueous phase. With increasing UV radiation intensity and decreasing dye concentration photocatalytic efficiency, was improved. TiO 2 /zeolite photocatalyst with fixed bed is recommended to be used in water treatment. The most important problem of using moving-bed TiO 2 /zeolite photocatalyst in the water treatment is opacity. |
topic |
Photocatalyst red Safranin dye TiO2 nanoparticles ultraviolet radiation zeolite |
url |
http://www.ijehe.org/article.asp?issn=2277-9183;year=2015;volume=4;issue=1;spage=4;epage=4;aulast=Rismanchian |
work_keys_str_mv |
AT masoudrismanchian investigationoftio2zeolitephotocatalyticactivityforsafranindyeremovalofaqueoussolution AT samirabarakat investigationoftio2zeolitephotocatalyticactivityforsafranindyeremovalofaqueoussolution AT nimakhoshzat investigationoftio2zeolitephotocatalyticactivityforsafranindyeremovalofaqueoussolution AT rezakeshavarzi investigationoftio2zeolitephotocatalyticactivityforsafranindyeremovalofaqueoussolution AT mahnazshakerian investigationoftio2zeolitephotocatalyticactivityforsafranindyeremovalofaqueoussolution |
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