The aim of the present work is to combine TiO2/Graphene to increase photo-catalytic activity and obtain efficient removal of direct red 23 azo dye without difficult synthesis. Many operating variables which affect the process and some design aspects were studied. Reactor geometry is the main design parameter where slurry rectangular reactor and bubble column were compared with respect to hydrodynamic regimes, overall degradation efficiency and applicability in industrial scale. The removal rate was found to increase with increase in TiO2 concentration, approaching a limiting value at catalyst loads of 3g/L. For rectangular reactor only 0.005g/L of rGO able to enhance the activity of photo-catalysis. However, the optimum concentration of rGO is decreased in the bubble column reactor to be 0.001g/L. In both reactor systems, photocatalytic activity increase significantly by decreasing wavelength of the irradiated lamp from 365 nm to 254 nm. Also, results show the ability of bubble column reactor to treat high concentrations of dye up to 200 ppm. That makes it suitable to be integrated with biological system to convert non-biodegradable contaminates into biodegradable organics. That reduces the operating cost of the process and makes it more applicable in industrial scale. Rectangular reactor has the ability to be modified to use sunlight instead of artificial lamps because of high surface exposed to sunlight. In general the performance of bubble column reactor was better than rectangular reactor because it has excellent mass transfer characteristics, which enhance the efficiency of the process.
| Published in | American Journal of Chemical Engineering (Volume 6, Issue 5) |
| DOI | 10.11648/j.ajche.20180605.15 |
| Page(s) | 107-120 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Wastewater Treatment, Photocatalysis, Nanomaterials, Slurry Bubble Column Reactor
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APA Style
Abd El-Aziz Hassanin Konsowa, Yehia Abd El-Qadeer EL-Taweel, Shahinaz Ibrahim Abogaliel. (2018). The Effect of Graphene/TIO2 Nanomaterials on Photocatalytic Performance for Industrial Wastewater Treatment. American Journal of Chemical Engineering, 6(5), 107-120. https://doi.org/10.11648/j.ajche.20180605.15
ACS Style
Abd El-Aziz Hassanin Konsowa; Yehia Abd El-Qadeer EL-Taweel; Shahinaz Ibrahim Abogaliel. The Effect of Graphene/TIO2 Nanomaterials on Photocatalytic Performance for Industrial Wastewater Treatment. Am. J. Chem. Eng. 2018, 6(5), 107-120. doi: 10.11648/j.ajche.20180605.15
AMA Style
Abd El-Aziz Hassanin Konsowa, Yehia Abd El-Qadeer EL-Taweel, Shahinaz Ibrahim Abogaliel. The Effect of Graphene/TIO2 Nanomaterials on Photocatalytic Performance for Industrial Wastewater Treatment. Am J Chem Eng. 2018;6(5):107-120. doi: 10.11648/j.ajche.20180605.15
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Download@article{10.11648/j.ajche.20180605.15,
author = {Abd El-Aziz Hassanin Konsowa and Yehia Abd El-Qadeer EL-Taweel and Shahinaz Ibrahim Abogaliel},
title = {The Effect of Graphene/TIO2 Nanomaterials on Photocatalytic Performance for Industrial Wastewater Treatment},
journal = {American Journal of Chemical Engineering},
volume = {6},
number = {5},
pages = {107-120},
doi = {10.11648/j.ajche.20180605.15},
url = {https://doi.org/10.11648/j.ajche.20180605.15},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20180605.15},
abstract = {The aim of the present work is to combine TiO2/Graphene to increase photo-catalytic activity and obtain efficient removal of direct red 23 azo dye without difficult synthesis. Many operating variables which affect the process and some design aspects were studied. Reactor geometry is the main design parameter where slurry rectangular reactor and bubble column were compared with respect to hydrodynamic regimes, overall degradation efficiency and applicability in industrial scale. The removal rate was found to increase with increase in TiO2 concentration, approaching a limiting value at catalyst loads of 3g/L. For rectangular reactor only 0.005g/L of rGO able to enhance the activity of photo-catalysis. However, the optimum concentration of rGO is decreased in the bubble column reactor to be 0.001g/L. In both reactor systems, photocatalytic activity increase significantly by decreasing wavelength of the irradiated lamp from 365 nm to 254 nm. Also, results show the ability of bubble column reactor to treat high concentrations of dye up to 200 ppm. That makes it suitable to be integrated with biological system to convert non-biodegradable contaminates into biodegradable organics. That reduces the operating cost of the process and makes it more applicable in industrial scale. Rectangular reactor has the ability to be modified to use sunlight instead of artificial lamps because of high surface exposed to sunlight. In general the performance of bubble column reactor was better than rectangular reactor because it has excellent mass transfer characteristics, which enhance the efficiency of the process.},
year = {2018}
}
TY - JOUR T1 - The Effect of Graphene/TIO2 Nanomaterials on Photocatalytic Performance for Industrial Wastewater Treatment AU - Abd El-Aziz Hassanin Konsowa AU - Yehia Abd El-Qadeer EL-Taweel AU - Shahinaz Ibrahim Abogaliel Y1 - 2018/11/06 PY - 2018 N1 - https://doi.org/10.11648/j.ajche.20180605.15 DO - 10.11648/j.ajche.20180605.15 T2 - American Journal of Chemical Engineering JF - American Journal of Chemical Engineering JO - American Journal of Chemical Engineering SP - 107 EP - 120 PB - Science Publishing Group SN - 2330-8613 UR - https://doi.org/10.11648/j.ajche.20180605.15 AB - The aim of the present work is to combine TiO2/Graphene to increase photo-catalytic activity and obtain efficient removal of direct red 23 azo dye without difficult synthesis. Many operating variables which affect the process and some design aspects were studied. Reactor geometry is the main design parameter where slurry rectangular reactor and bubble column were compared with respect to hydrodynamic regimes, overall degradation efficiency and applicability in industrial scale. The removal rate was found to increase with increase in TiO2 concentration, approaching a limiting value at catalyst loads of 3g/L. For rectangular reactor only 0.005g/L of rGO able to enhance the activity of photo-catalysis. However, the optimum concentration of rGO is decreased in the bubble column reactor to be 0.001g/L. In both reactor systems, photocatalytic activity increase significantly by decreasing wavelength of the irradiated lamp from 365 nm to 254 nm. Also, results show the ability of bubble column reactor to treat high concentrations of dye up to 200 ppm. That makes it suitable to be integrated with biological system to convert non-biodegradable contaminates into biodegradable organics. That reduces the operating cost of the process and makes it more applicable in industrial scale. Rectangular reactor has the ability to be modified to use sunlight instead of artificial lamps because of high surface exposed to sunlight. In general the performance of bubble column reactor was better than rectangular reactor because it has excellent mass transfer characteristics, which enhance the efficiency of the process. VL - 6 IS - 5 ER -
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