The Photo-Oxidation of CO from Ambient Air Using Catalytic Asphaltic Pavement

Autor: Seba Mohammed, Zainab Shnain, Asawer Alwasiti, Mohammad Abid, Kadhim Abed, Mohammed Mohammed, Zainab Hameed, Sajda Faris, Peter Philib
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Engineering and Technology Journal, Vol 41, Iss 3, Pp 529-542 (2023)
Druh dokumentu: article
ISSN: 1681-6900
2412-0758
DOI: 10.30684/etj.2023.138354.1385
Popis: Road transportation in urban areas may be considered a major source of environmental pollution. The purpose of this study is to determine the effectiveness of the oxidation of carbon dioxide gas emitted by an internal combustion engine. This is achieved using an asphaltic pavement coated with Cu/TiO2 nanoparticles by spraying and irradiating with white light under ambient conditions to reduce the air pollution problem (carbon monoxide) caused by vehicles. Using electron microscopy, energy dispersive spectroscopy, and Fourier transform infrared spectroscopy, we determined the physicochemical and morphological characteristics of the photocatalyst. Following the characterization study, the photo-catalytic activity of the asphalt materials was determined. Experimental results showed that CO conversion positively depends on different conditions, including Cu loading, light intensity, and relative humidity. However, the gas flow rate showed a different trend. The optimal operating parameters were determined as follows: Cu loading (3.6% by weight), a flow rate of gas (1 L/min), relative humidity (30%), and light intensity (35 W/m2) to ensure the best photo-oxidation efficiency of 56.4% after three hours of operation. A mathematical correlation related to CO2 removal as a function of different operating conditions was found with a correlation factor of 0.975 and a variance equal to 0.964. Moreover, a kinetic pathway for photo-oxidation of CO at various oxygen concentrations was presented.
Databáze: Directory of Open Access Journals
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