Naslov
Photocatalytic oxidation of ammonia on TiO2 immobilized on rubber pads under artificial solar irradiation

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

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

Izvornik
4th International Meeting on Materials Science for Energy Related Applications / - , 2021, 34-35

Skup
Materials Science for Energy Related Applications

Mjesto i datum
Beograd, Srbija, 22.09.2021. - 23.09.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
titan dioksid, fotokataliza, pročišćavanje zraka
(titanium dioxide, solar photocatalysis, air purification)

Sažetak
Industrial development affects air quality, but it also encourages the advancement of technology and the interest of scientists. Increased emissions of ammonia (NH3) caused by agricultural activities have been impacting environmental issues, such as species composition through soil acidification, direct toxic damage to leaves, and by altering the susceptibility of plants to drought, pathogens, and frost, sensitive habitats. Furthermore, due to NH3 contribution to the formation of secondary particulate matter (PM), it significantly affects human health[1]. In regard to the application of heterogeneous photocatalysis for air, purification has been developed over the last decades [2]. Photocatalysis is a promising method for removing air pollutants using ultraviolet radiation, which stimulates reactions between a photocatalyst, compounds, and contaminants in the air. Therefore, this paper presents the experimental results of photocatalytic degradation of ammonia on rubber pads with immobilized titanium dioxide ( TiO2) by the modified sol-gel method[3]. Experiments were performed in a semi-pilot photocatalytic wind tunnel under simulated solar irradiation with different portions of UV light. Rubber pads were made of recycled rubber granulates. The aim of the experiments was to remove ammonia from the air stream. The kinetic study resulted in intrinsic reaction rate constants calculated using the axial dispersion model, including mass transfer considerations and first-order reaction rate kinetics with photon absorption effects. The results confirmed photocatalytic oxidation of ammonia towards molecular nitrogen (N2) in the photocatalytic wind tunnel. Therefore, the preliminary results obtained in this work represent a good basis for sizing reactors on a pilot level to prevent further environmental pollution.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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