Fine particulate matter and its chemical constituents' levels: A troubling environmental and human health situation in Karachi, Pakistan

Moyebi, Omosehin D; Fatmi, Zafar; Carpenter, David O.; Santoso, Muhayatun; Siddique, Azhar; Khan, Kamran; Zeb, Jahan; Hussain, Mirza M.; Khwaja, Haider A.

doi:10.1016/j.scitotenv.2023.161474

Cited by 12 publications

(2 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its reaction efficiency of oxidizing HC at low load is higher than that at high load, up to 90%, and the conversion efficiency is about 60% at 100% load. The specific reaction equation is shown in (4). Because SDPF is internally coated with a catalyst, it also has a certain reduction effect on HC, but the effect is far less than DOC.…”

Section: Emissions Of Gaseous Pollutantsmentioning

confidence: 99%

See 1 more Smart Citation

Emission Characteristics of Particulate and Gaseous Pollutants from a Light-Duty Diesel Engine with SDPF

Tan,

Wang,

Duan

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Due to the inherent combustion characteristics of diesel engines, particulate matter (PM) and nitrogen oxides (NO x ) are the main pollutants of diesel engines. NO x emissions under low load and low temperature are the focus of future regulation. Selective catalytic reduction coated on diesel particulate filter (SDPF) can reduce NO x and PM emissions of diesel engines at the same time, especially improving the emission characteristics of NO x under low load and low temperature. In this paper, a light-duty diesel engine with diesel oxidation catalyst (DOC) and SDPF was studied, and emission of particulate and gaseous pollutants of the engine before DOC, after DOC, and after SDPF was measured under 10 steady-state operating conditions. The effects of SDPF on particulate size distribution, the filtration efficiency of particulate, and the conversion efficiency of gaseous pollutants were analyzed. The results show that DOC + SDPF can trap PM with particle sizes between 10 and 23 nm by 1–2 orders of magnitude, and the conversion and filtration efficiency of DOC + SDPF for both gaseous pollutants and PM exceeds 90% under low-temperature and low-load conditions. The filtration efficiency of SDPF is 94.37% for PM and 90.36% for PN, and the conversion efficiency is 91.43% for NO x .

show abstract

Section: Emissions Of Gaseous Pollutantsmentioning

confidence: 99%

“…Worldwide, emission regulation of diesel engines is becoming more and more strict. These pollutants not only pollute the environment but also endanger people’s health. − …”

Section: Introductionmentioning

confidence: 99%

Emission Characteristics of Particulate and Gaseous Pollutants from a Light-Duty Diesel Engine with SDPF

Tan,

Wang,

Duan

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

Financial health and economic growth responsiveness as solution to environmental degradation in Pakistan

Golo,

Han,

Balsalobre-Lorente

et al. 2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

This study analyses the impact of GDP per capita, domestic credit, savings, and population on the environment in Pakistan from 1995 to 2019. The country has consistently been ranked eighth, fifth, and eight as an environmentally vulnerable nation from 1998 to 2017, 1999 to 2018, and 2000 to 2019, respectively. Therefore, the study explores the role of environmental awareness as a potential strategy for making peace with nature. Findings of the ARDL bounds testing approach confirm the long-run cointegration among variables of concern. In further assessment, the study determines that increased per capita income is detrimental to environmental quality in the long run. However, in the short run, it shows a favourable impact. On the other hand, domestic credit worsens the environment in the long and short runs. However, savings are positively insignificant in this regard. Furthermore, the total population significantly harms the environment in the long and short run. Fortunately, environmental awareness has emerged as a key solution to environmental degradation in Pakistan. Findings show that an increase in the dissemination of environmental awareness through the Internet, mobile, and landline phones, as well as by increasing education expenditures, mitigates the populations’ detrimental impact on the environment and improves environmental quality in the long run. Graphical Abstract

show abstract

Source apportionment of fine particulate matter at different underground sites in the Chengdu metro system in summer

Huang,

Li,

Zhang

et al. 2024

Building and Environment

View full text Add to dashboard Cite

Fine particulate matter and its chemical constituents' levels: A troubling environmental and human health situation in Karachi, Pakistan

Cited by 12 publications

References 54 publications

Emission Characteristics of Particulate and Gaseous Pollutants from a Light-Duty Diesel Engine with SDPF

Emission Characteristics of Particulate and Gaseous Pollutants from a Light-Duty Diesel Engine with SDPF

Financial health and economic growth responsiveness as solution to environmental degradation in Pakistan

Source apportionment of fine particulate matter at different underground sites in the Chengdu metro system in summer

Contact Info

Product

Resources

About