Naslov
Multiphysics modelling of ammonia and nitrogen oxides photocatalytic oxidation on a semi-pilot scale

Autori
Radetić, Benjamin ; Tomaš, Marija ; Benjak, Paula ; Grčić, Ivana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts PTIM 2021 / Lodeiro, Carlos ; Capelo-Martinez, Jose Luis , Santos, Hugo M. ; Oliveira, Elisabete - Caparica : PROTEOMASS Scientific Society (Portugal), 2021, 154-154

ISBN
978-989-54822-9-0

Skup
4th International Caparica Conference on Pollutant Toxic Ions and Molecules (PTIM 2021)

Mjesto i datum
Caparica, Portugal, 31.10.2021. - 04.11.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
Photocatalysis ; Titanium dioxide (TiO2) ; nitrogen oxides (NOx) ; Ammonia (NH3) ; Photocatalytic wind tunnels

Sažetak
In the several last decades, photocatalysis has been widely researched as a promising method for improvements of air quality[1] such as ammonia (NH3) and nitrogen oxides (NOx) which emission are related with human activities in rural and urban areas (industry, traffic, agriculture)[2, 3]. An advanced oxidation process has been coupling air moisture, solar irradiation and photocatalyst (semiconductor) for degradation of air contaminants by forming highly reactive species. In this paper, multiphysics modelling of photocatalytic degradation of NH3 and NOx in a semi-pilot photoreactor are presented. Experiments were performed in a photocatalytic wind tunnel (PWT) under simulated solar irradiation with different portions of UVB and UVA light. Commercially available materials were used for the preparation of photocatalyst, namely titanium dioxide (TiO2 P25) and glass fibers mesh on which TiO2 was immobilized by sol-gel method[4]. The aim of the experiments was to oxidize NH3 and NOx from the air stream which were represented by nitrogen dioxide (NO2), nitrogen oxide (NO) and nitrous oxide (N20) up to molecular nitrogen. Experimental results of kinetic study were used as input for the computational fluid modelling in order to design a tool for assessing the performance of semi-pilot reactor. The developed model allows optimization of the reactor design and determination of photocatalytic oxidation of different pollutant concentrations and species. Obtained model presents a good basis for the pilot reactor scaling and application of photocatalysis for the outdoor air purification.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne tehničke znanosti

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