TY - JOUR ID - TI - The Photo-Oxidation of CO from Ambient Air Using Catalytic Asphaltic Pavement AU - Peter Philib AU - Sajda S. Faris AU - Zainab Hameed AU - Mohammed I. Mohammed AU - Kadhim Noori Abed AU - Asawer Alwasiti AU - Mohammad F. Abid AU - Zainab Y. Shnian AU - Seba S. Mohammed PY - 2023 VL - 41 IS - 3 [Chemical Engineering] SP - 529 EP - 542 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - Road transportation in urban areas may be considered a major source ofenvironmental pollution. The purpose of this study is to determine theeffectiveness of the oxidation of carbon dioxide gas emitted by an internalcombustion engine. This is achieved using an asphaltic pavement coated withCu/TiO2 nanoparticles by spraying and irradiating with white light under ambientconditions to reduce the air pollution problem (carbon monoxide) caused byvehicles. Using electron microscopy, energy dispersive spectroscopy, andFourier transform infrared spectroscopy, we determined the physicochemical andmorphological characteristics of the photocatalyst. Following the characterizationstudy, the photo-catalytic activity of the asphalt materials was determined.Experimental results showed that CO conversion positively depends on differentconditions, including Cu loading, light intensity, and relative humidity. However,the gas flow rate showed a different trend. The optimal operating parameterswere determined as follows: Cu loading (3.6% by weight), a flow rate of gas (1L/min), relative humidity (30%), and light intensity (35 W/m2) to ensure the bestphoto-oxidation efficiency of 56.4% after three hours of operation. Amathematical correlation related to CO2 removal as a function of differentoperating conditions was found with a correlation factor of 0.975 and a varianceequal to 0.964. Moreover, a kinetic pathway for photo-oxidation of CO at variousoxygen concentrations was presented.

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