Photocatalytic performance of cylindrical reactor inserted with UV light-emitting-diodes for purification of low-level toxic volatile organic compounds

2012 ◽  
Vol 259 ◽  
pp. 657-663 ◽  
Author(s):  
Wan K. Jo ◽  
Hyun J. Kang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Photocatalytic Performance ◽  
Light Emitting Diodes ◽  
Uv Light ◽  
Light Emitting ◽  
Low Level ◽  
Volatile Organic ◽  
Cylindrical Reactor

Influence of colorful light-emitting diodes on growth, biochemistry, and production of volatile organic compounds in vitro of Lippia filifolia (Verbenaceae)

2020 ◽  
Vol 212 ◽  
pp. 112040
Author(s):  
Marcella Carvalho Chaves ◽  
Jober Condé Evangelista Freitas ◽  
Fernanda Carlota Nery ◽  
Renato Paiva ◽  
Débora de Oliveira Prudente ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Volatile Organic

Enhanced Photocatalytic Properties of N and Fe Co-Doped TiO2 Nanocomposites with Reduced Graphene Oxide for Volatile Organic Compounds

2019 ◽  
Vol 11 (9) ◽  
pp. 1263-1270 ◽  
Author(s):  
Zhanguo Li ◽  
Chao Shi ◽  
Lijuan Wang ◽  
Lijing Sun ◽  
Qiang Sun
Keyword(s):  
Graphene Oxide ◽  
Volatile Organic Compounds ◽  
Photocatalytic Degradation ◽  
Reduced Graphene Oxide ◽  
Organic Compounds ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Reduced Graphene ◽  
Volatile Organic

Photocatalytic nanocomposites of titanium dioxide (TiO2) were prepared by hydrothermal method. Reduced graphene oxide (RGO) was applied to prepare various TiO2 composites of doped nanoparticles by using NH4Cl and FeCl3 as sources. The structure and morphology of these composites showed that TiO2 was loaded on surface of RGO. Meanwhile, the agglomeration of TiO2 decreased and the dispersion became uniform for doped materials. Under ultraviolet (UV) light irradiation, the photocatalytic degradation of volatile organic compounds (VOC) by RGO/TiO2 composites with codoping of N and Fe reached to 90.5%. The photocatalytic degradation was higher than RGO/TiO2 composites and pure TiO2 by 1.8 and 5.9 times, respectively. The role of co-doping composites may have a possible mechanism for toluene under UV light irradiation. The enhanced photocatalytic properties were attributed to N and Fe doping which generated intermediate energy level, extended absorption and decreased band gap of UV light.

scholarly journals Enhancing the environmental performance of biotrickling filters treating volatile organic compounds in air

2021 ◽  
Vol 906 (1) ◽  
pp. 012124
Author(s):  
Gabriela Soreanu ◽  
Mariana Diaconu ◽  
Stelian Sergiu Maier ◽  
Irina Volf ◽  
Cretescu Igor
Keyword(s):  
Carbon Dioxide ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Environmental Performance ◽  
Light Emitting ◽  
Volatile Organic ◽  
Continuous Regime ◽  
First Time ◽  
Further Development ◽  
Filtration Technology

Abstract The actual biotrickling filtration technology addresses volatile organic compounds (VOCs) removal from air, by their conversion into less harmful gaseous compounds (e.g. carbon dioxide). The actual study extends this capability towards not only VOCs removal, but also removal of carbon dioxide issued from biodegradation, in the same biotrickling filter (BTF). This upgrade results in higher C-capture and the reduction of greenhouses gases associated with this process, thus increasing the environmental performance of such BTFs. The model pollutant used in this study is ethanol, while a co-immobilised microalgae and compost-derived microorganisms is used for the first time accomplishing the above mentioned desiderate (simultaneously removal of VOC and carbon dioxide in the same BTF), under continuous regime and illumination provided by an array of light-emitting diodes (LED)). Very promising performances are obtained, revealing new competitive alternatives with high potential for further development, in the light of atmospheric protection and climate change issues.

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