Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets
TiO2 immobilized on polyethylene (PET) nonwoven sheet was used in the solar photocatalytic degradation of methylene blue (MB). TiO2 Evonik Aeroxide P25 was used in this study. The amount of loaded TiO2 on PET was approximately 24%. Immobilization of TiO2 on PET was conducted by dip coating process f...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2016/9270492 |
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| author | Doaa M. EL-Mekkawi Norhan Nady Nourelhoda A. Abdelwahab Walied A. A. Mohamed M. S. A. Abdel-Mottaleb |
| author_facet | Doaa M. EL-Mekkawi Norhan Nady Nourelhoda A. Abdelwahab Walied A. A. Mohamed M. S. A. Abdel-Mottaleb |
| author_sort | Doaa M. EL-Mekkawi |
| collection | DOAJ |
| description | TiO2 immobilized on polyethylene (PET) nonwoven sheet was used in the solar photocatalytic degradation of methylene blue (MB). TiO2 Evonik Aeroxide P25 was used in this study. The amount of loaded TiO2 on PET was approximately 24%. Immobilization of TiO2 on PET was conducted by dip coating process followed by exposing to mild heat and pressure. TiO2/PET sheets were wrapped on removable Teflon rods inside home-made bench-scale recirculating flow Compound Parabolic Concentrator (CPC) photoreactor prototype (platform 0.7 × 0.2 × 0.4 m3). CPC photoreactor is made up of seven low iron borosilicate glass tubes connected in series. CPC reflectors are made of stainless steel 304. The prototype was mounted on a platform tilted at 30°N local latitude in Cairo. A centrifugal pump was used to circulate water containing methylene blue (MB) dye inside the glass tubes. Efficient photocatalytic degradation of MB using TiO2/PET was achieved upon the exposure to direct sunlight. Chemical oxygen demand (COD) analyses reveal the complete mineralization of MB. Durability of TiO2/PET composite was also tested under sunlight irradiation. Results indicate only 6% reduction in the amount of TiO2 after seven cycles. No significant change was observed for the physicochemical characteristics of TiO2/PET after the successive irradiation processes. |
| format | Article |
| id | doaj-art-213d79a67fb148a0b196ba4d76d20c07 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-213d79a67fb148a0b196ba4d76d20c072025-02-03T05:58:10ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2016-01-01201610.1155/2016/92704929270492Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET SheetsDoaa M. EL-Mekkawi0Norhan Nady1Nourelhoda A. Abdelwahab2Walied A. A. Mohamed3M. S. A. Abdel-Mottaleb4Physical Chemistry Department, National Research Centre (NRC), 33 Elbohouth Street, P.O. Box 12622, Dokki, Giza, EgyptPolymeric Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, EgyptPolymers and Pigments Department, National Research Centre (NRC), 33 Elbohouth Street, P.O. Box 12622, Dokki, Giza, EgyptInorganic Chemistry Department, National Research Centre, 33 Elbohouth Street, P.O. Box 12622, Dokki, Giza, EgyptNano-Photochemistry and Solar Chemistry Department, Laboratory of Chemistry, Faculty of Science, Ain Shams University, Abbassia, 11566 Cairo, EgyptTiO2 immobilized on polyethylene (PET) nonwoven sheet was used in the solar photocatalytic degradation of methylene blue (MB). TiO2 Evonik Aeroxide P25 was used in this study. The amount of loaded TiO2 on PET was approximately 24%. Immobilization of TiO2 on PET was conducted by dip coating process followed by exposing to mild heat and pressure. TiO2/PET sheets were wrapped on removable Teflon rods inside home-made bench-scale recirculating flow Compound Parabolic Concentrator (CPC) photoreactor prototype (platform 0.7 × 0.2 × 0.4 m3). CPC photoreactor is made up of seven low iron borosilicate glass tubes connected in series. CPC reflectors are made of stainless steel 304. The prototype was mounted on a platform tilted at 30°N local latitude in Cairo. A centrifugal pump was used to circulate water containing methylene blue (MB) dye inside the glass tubes. Efficient photocatalytic degradation of MB using TiO2/PET was achieved upon the exposure to direct sunlight. Chemical oxygen demand (COD) analyses reveal the complete mineralization of MB. Durability of TiO2/PET composite was also tested under sunlight irradiation. Results indicate only 6% reduction in the amount of TiO2 after seven cycles. No significant change was observed for the physicochemical characteristics of TiO2/PET after the successive irradiation processes.http://dx.doi.org/10.1155/2016/9270492 |
| spellingShingle | Doaa M. EL-Mekkawi Norhan Nady Nourelhoda A. Abdelwahab Walied A. A. Mohamed M. S. A. Abdel-Mottaleb Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets International Journal of Photoenergy |
| title | Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets |
| title_full | Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets |
| title_fullStr | Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets |
| title_full_unstemmed | Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets |
| title_short | Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets |
| title_sort | flexible bench scale recirculating flow cpc photoreactor for solar photocatalytic degradation of methylene blue using removable tio2 immobilized on pet sheets |
| url | http://dx.doi.org/10.1155/2016/9270492 |
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