期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 7, 期 5, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2019.103408
关键词
Photocatalysis; VOCs; Microreactors; LEDs; TiO2
资金
- MINECO [BES-2016-078079, CTQ2015-66080-R]
- Generalitat Valenciana [PROMETEOII/2018/076]
In this study, we present a photo-microreactor illuminated with a low power LED light as a highly efficient system to achieve the total oxidation of propene using a TiO2 photocatalyst. This abatement system (photomicroreactor) consists in an immobilized benchmark photocatalyst (TiO2, P25) inside a commercial glass microchannel chip (UV transparent microfluidic chips, internal volume of 9.5 mu I) using a packed-bed configuration without any previous treatment. The P25 inside the microreactor shows a nearly homogenous filling of the particles resulting in a low pressure drop throughout the system. In terms of propene abatement (Catalytic activity), the P25 inside the commercial microreactor reaches total propene conversion (100%) under flow conditions at low concentrations (100 ppmv) due to shorter diffusion distances, large surface-to-volume ratios, efficient heat transfer, and the improved light penetration inside the microchannel. Moreover, the prepared microreactor uses a low consumption power (LED), low residence time and presents a relatively low pressure drop making this device (P25 inside a commercial microreactor) very interesting for the abatement of volatile organic compounds at low concentration for example at indoor ambient due to its small size (45 x 15 mm).
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