Emission Characteristics of Hazardous Air Pollutants from Medium-Duty Diesel Trucks Based on Driving Cycles

Jung, Sungwoon; Kim, Sunmoon; Chung, Taekho; Hong, Heekyoung; Lee, Seung Hwan; Lim, Jae-Hyun

doi:10.3390/su13147834

Cited by 2 publications

(1 citation statement)

References 33 publications

(55 reference statements)

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“…Literature has also indicated that, the processing of asphalt has the potentials of releasing high concentrations of harmful substances into the atmosphere [21,22,23]. Heavy-duty trucks, machines, and road construction can release significant amounts of poisonous gases and SPM into the environment [24,25,26]. Beer production processes have the capacity of polluting the environment including air with harmful substances [27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Impacts of varied industrial activities within southern Nigeria on air environment and human health

Godwin Asukwo EBONG,

Idongesit Bassey ANWETING,

Helen Solomon ETUK

et al. 2023

GSC Adv. Res. Rev.

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The contamination of air environment by industrial activities is a global problem mostly in the underdeveloped and developing Nations where environmental issues are handled with levity. This research investigated the impact of industrial activities on air environment at the following companies; Crude Oil processing (COPC), beer processing (BPC), asphalt processing (APC), metal processing (MPC), and construction Company machinery Yard (CCMY) in Southern Nigeria. Air Monitors were employed to quantify nitrogen (IV) oxide (NO2), sulphur (IV) oxide (SO2), hydrogen sulphide (H2S), cabon (II) Oxide CO, total volatile organic carbon (TVOC), and suspended particulate matter (SPM) at the studied locations. The mean values of NO2, SO2, H2S, and CO obtained at all the industrial locations were higher than their recommended limits by the Federal Environmental and protection Agency (FEPA) except at BPC. The mean levels of TVOC were higher than the limit at all the locations apart from BPC and CCMY. However, the mean levels of SPM at all locations were higher than the permissible limit. The general trend for the discharge of air pollutants indicated that, COPC and BPC were rated the highest and lowest, respectively. The air quality index (AQI) values obtained revealed that, all the air pollutants at all the locations except BPC were harmful to human health. Nevertheless, the mean AQI value of SPM at BPC was also in the hazardous class. The Principal component analysis (PCA) confirmed that, industrial activities at the studied locations were responsible for the accumulation of these toxic substances in the adjoining air environment. Hierarchical cluster analysis (HCA) for the air pollutants corroborated that most of the parameters were from a common source. HCA for the studied locations indicated similarities between BPC and CCMY, APC and MPC, while COPC was in a separate cluster. Thus, this study has shown the effects of untreated gases released from industries into the air on the environment and appropriate measures should be adopted to ameliorate the trend.

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Section: Introductionmentioning

confidence: 99%

Impacts of varied industrial activities within southern Nigeria on air environment and human health

Godwin Asukwo EBONG,

Idongesit Bassey ANWETING,

Helen Solomon ETUK

et al. 2023

GSC Adv. Res. Rev.

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Real-Time Measurements of Formaldehyde Emissions from Modern Vehicles

et al. 2022

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Formaldehyde (HCHO), a carcinogenic carbonyl compound and precursor of tropospheric ozone, can be found in vehicle exhaust. Even though the continuous monitoring of HCHO has been recommended, the real-world emissions from the road transport sector are not commonly available. The main reason for this knowledge gap has been the difficulty to measure HCHO in real-time and during real-world testing. This, for instance, increases the uncertainty of the O3 simulated by air quality models. The present study investigates real-time HCHO measurements comparing three Fourier Transform InfraRed spectrometers (FTIRs) and one Quantum Cascade Laser InfraRed spectrometer (QCL-IR) directly sampling from the exhaust of one gasoline passenger car, one Diesel commercial vehicle and one Diesel heavy-duty vehicle, all meeting recent European emission standards (Euro 6/VI). Non-negligible emissions of HCHO were measured from the Diesel light-duty vehicle, with emissions increasing as temperature decreased. Relatively low emissions were measured for the gasoline car and the Diesel heavy-duty vehicle. The results showed a good correlation between the different instruments under all the conditions tested (in most cases R2 > 0.9). Moreover, it was shown that HCHO can be accurately measured during on-road and real-world-like tests using instruments based on FTIR and QCL-IR technologies.

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Emission Characteristics of Hazardous Air Pollutants from Medium-Duty Diesel Trucks Based on Driving Cycles

Cited by 2 publications

References 33 publications

Impacts of varied industrial activities within southern Nigeria on air environment and human health

Impacts of varied industrial activities within southern Nigeria on air environment and human health

Real-Time Measurements of Formaldehyde Emissions from Modern Vehicles

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