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http://dx.doi.org/10.3740/MRSK.2022.32.4.223

Porous Photocatalytic Concrete Filter Manufacturing and Efficiency Evaluation for NOx Reduction  

Kim, Jong Kyu (Department of Urban and Real Estate Development Engineering, Shinhan University)
Publication Information
Korean Journal of Materials Research / v.32, no.4, 2022 , pp. 223-229 More about this Journal
Abstract
A porous photocatalyst concrete filter was successfully produced to remove NOx, by mixing TiO2 photocatalyst with lightweight aerated concrete. Ultra Fine Bubbles were used to form continuous pores inside the porous photocatalytic concrete filter, which was mixed via a bubble generation experiment. The optimal mixing condition was determined to be with 4 % of the bubble generation agent B. NO removal specimens were prepared for various photocatalytic loading conditions, and the specimen containing 3 % P-25 removed NO at a concentration of 1.03 µmol in 1 h. The NO removal rate of the porous photocatalytic concrete filter prepared in this study was 10.99 %. This photocatalytic filter performance was more than 9 times the amount of NO removed by a general photocatalytic filter. The porous photocatalyst concrete filter for removing NOx developed in this study can be applied to various construction sites and the air quality can be solved by reducing NOx contributing to the formation of fine particles.
Keywords
$TiO_2$; continuous void ratio; lightweight aerated concrete; ultra fine bubble; NO reduction;
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