Facile photocatalytic reactor development using nano-TiO₂ immobilized mosquito net and energy efficient UVLED for industrial dyes effluent treatment

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• 作者：Wan-Kuen Jo^a ; Rajesh J. Tayade^a ; ^b ; ^{rtayade@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{tayade@csmcri.org" class="auth_mail" title="E-mail the corresponding author}
• 关键词：TiO2-coated mosquito net ; Photocatalysis ; Ultraviolet light emitting diode (UVLED) ; Photocatalytic reactor ; Dyes
• 刊名：Journal of Environmental Chemical Engineering
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：4
• 期：1
• 页码：319-327
• 全文大小：1476 K

文摘

The degradation of dyes present in water has been widely studied using well established photocatalytic process using various nanosized photocatalysts in the past. After the treatment of water the release of nanoparticles in the environment could cause adverse effects on the human health and ecosystem. The present study focuses on the facile development of highly adhered, TiO₂ immobilized photocatalytic surface using low cost support materials such as mosquito net to avoid adverse effect of nanosize photocatalyst released after water treatment. A simple photocatalytic reactor using TiO₂ coated mosquito net and ultraviolet light emitting diodes (UVLEDs) was fabricated and used to study photocatalytic degradation of dyes (methylene blue (MB), malachite green (MG), direct blue-15 (DB), and amaranth (AM)). The photocatalytic degradation of methylene blue, malachite green, direct blue-15 and amaranth dye was obtained 93%, 88%, 94% and 85% respectively using the TiO₂ coated mosquito net under irradiation of ultraviolet light for 4 h. Furthermore, the effects of the initial concentration, number of UVLEDs used, and addition of H₂O₂ on the degradation of MB were also studied to optimize the experimental conditions.