RSM-Based Optimization of the Parameters Affecting TiO2-Mediated UV Photocatalysis of Vehicular Emissions in Enclosed Parking Garages,International Journal of Photoenergy

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RSM-Based Optimization of the Parameters Affecting TiO2-Mediated UV Photocatalysis of Vehicular Emissions in Enclosed Parking Garages
International Journal of Photoenergy ( IF 3.2 ) Pub Date : 2021-07-06 , DOI: 10.1155/2021/9981068
Sandeep Singh ₁ , Parteek Thind ₂ , Manpreet Kaur Verma ₃ , Dapinder Deep Singh ₄ , Arjun Sareen ₅ , Dheeraj Ahuja ₆ , Jasgurpreet Singh Chohan ₇ , Raman Kumar ₇ , Shubham Sharma ₈ , Nima Khalilpoor ₉ , Alibek Issakhov ₁₀

Affiliation

Department of Civil Engineering, Chandigarh University, Gharuan, 140413, India
Department of Civil Engineering, Punjab Engineering College, Chandigarh 160012, India
Department of Chemistry, Desh Bhagat University, Sahib, Fatehgarh 147301, India
Department of Civil Engineering, Shaheed Bhagat Singh State Technical Campus, Ferozepur, 152004, India
Assistant Project Officer, State Project Management Unit, Punjab Pollution Control Board, Ludhiana 141001, India
Department of Chemical Engineering, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, India
Associate Professor, Department of Mechanical Engineering, Chandigarh University, Gharuan, 140413, India
Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus, Kapurthala 144603, India
Department of Energy Engineering, Graduate School of the Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
Faculty of Mechanics and Mathematics, Department of Mathematical and Computer Modelling, Al-Farabi Kazakh National University, Almaty, Kazakhstan

In the preceding times, the number of enclosed parking garages has increased significantly in developing nations. The toxic emissions from vehicular exhausts are expected to drastically compromise the environmental conditions of the parking garages. Subsequently, exposure of humans to these accumulated pollutants is also expected to degrade their health. Therefore, in the present investigation, efforts were made to estimate the applicability of TiO₂-mediated UV photocatalysis in degrading the concentration of vehicular emissions, viz., NO_x and SO₂, in the enclosed parking garages (EPGs). In this regard, an artificial EPGs’ environment was created and experiments were designed using the Box-Behnken design in combination with response surface methodology. The process parameters chosen for maximizing the degradation of the pollutants were a concentration of TiO₂ emulsion (20 to 120 ml/m²), UV irradiance (1 to 5 mW/cm²), and relative humidity (10 to 50%). Optimization of the laboratory experiments revealed that at optimal conditions of the process parameters, i.e., a concentration of TiO₂, intensity of UV , and relative , maximum degradation of the NO_x and SO₂, i.e., 61.24% and 55.05%, respectively, was achieved. Further, it was revealed that relative humidity may prove to be the limiting factor while using the TiO₂-mediated UV photocatalysis in humid areas. Findings of this study may prove beneficial in urban planning as it may assist scientific auditory and local authorities in identifying the applicability of TiO₂-based photocatalysis in mitigating the impacts of vehicular emissions.

更新日期：2021-07-06

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