Development of UV-enhanced Photocatalytic Microchannel Optical Waveguide for Water Treatment

Autor: Parit Chandrasardula, Charusluk Viphavakit, Varong Pavarajarn, Pete Tuchinda, Pongpol Jarudrungchawalit, Pat Prammanasudh
Rok vydání: 2020
Předmět:
Zdroj: 2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON).
DOI: 10.1109/ecti-con49241.2020.9158234
Popis: A multilayer microchannel optical waveguide is proposed to enhance the UV photocatalytic reaction in the water treatment. The multilayer microchannel waveguide is made of 3 borosilicate glass substrates and 2 PDMS layers with a thickness of 500 μm each. The dimensions of the fabricated microchannel are 2 cm in width, 4 cm in length and 2.5 mm in thickness. The UV-LED light source is coupled into the microchannel waveguide from the side allowing the compact and multilayer channel for the water treatment to be achieved. A 10 ppm (0.001%) methylene blue is initially investigated its degradation under UV exposure without the catalyst. The UV light guided along the microchannel waveguide can improve the light uniformity and enhance the photoreaction resulting in constant degradation rate with a 13% reduction of methylene blue concentration after 60 minutes of the exposure.
Databáze: OpenAIRE