Characterizations of Deposited Dust Fallout in Riyadh City, Saudi Arabia

Modaihsh, A. S.; Ghoneim, Adel M.; Al-Barakah, Fahad N. I.; Mahjoub, Mohammed; Nadeem, Mahmoud

doi:10.15244/pjoes/68565

Cited by 15 publications

(9 citation statements)

References 19 publications

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“…1). Sampling is performed as dust is deposited on clean glass surfaces and collected on monthly basis as reported in other studies on fallout dust collection [14][18]. One sample was obtained from each location ( Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Although dust storms are common phenomenon in arid and semi-arid regions worldwide, they are natural events that occur frequently in the Arabian Peninsula [14], which generate high level of airborne PM concentration. Dust storms carry PM of natural and anthropogenic components that might have considerable impact on human society in any residential area.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, several works have reported on the characterization of airborne particulate matter in this area [11][15] [16], but there is considerable lack on the identification of the sources of these particles [12] [14]. Aissa et al [16] had characterized dust samples collected in Doha-Qatar during the summer.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on Deposited Dust Fallout in Urban Doha: Characterization, Source Apportionment and Mitigation

Al-Thani¹,

Koç²,

Isaifan³

2018

eer

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This preliminary study investigates and reports on the sources, characterization and possible mitigation of dust fallout in urban Doha, Qatar. Nine samples were collected from three different sites in close vicinity to the Solar Test Facility (STF) in west Doha during the winter of 2016 in Doha. The morphology and size distribution of the samples were analyzed using scanning electron and optical microscopy imaging techniques. It was found that the particulate matter had different shapes with an average particle size of 7.38 μm. The mass concentration of the elements, in order from greatest to smallest, was: Ca, Si, Fe, Mg, Al, Ti, K, Na, S, and Cl. The enrichment factor showed extremely high ratios of Cl and S, while Ca had significant enrichment value. The sources of PM samples were identified to be mainly of natural origin (around 60%) with the balance attributed to anthropogenic sources. The natural sources were related to soil/crustal matter, marine salt and desert dust while the anthropogenic sources were mainly due to transportation and construction activities, which have been experiencing dramatic increase during the past decade in Doha along with its rapid economic development. To this end, several possible mitigation strategies to abate urban PM and its harmful effects were also proposed considering the local living and cultural conditions in Qatar.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigations on Deposited Dust Fallout in Urban Doha: Characterization, Source Apportionment and Mitigation

Al-Thani¹,

Koç²,

Isaifan³

2018

eer

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“…Sampling and in-situ XRF measurements Sampling was performed as dust was deposited on clean glass surfaces and collected as reported in other studies on dust collection methodology (Al-Dousari and Al-Awadhi 2012;Al-Thani, Koc, and Isaifan 2018;Modaihsh et al 2017). In-situ XRF measurements were also conducted in 20 locations as shown in the detailed maps in Figure S1 in the supplementary material file.…”

Section: Study Design and Research Methodologymentioning

confidence: 99%

Evaluation of particulate matter emissions from non-passenger diesel vehicles in Qatar

Al-Thani

Koç

Fountoukis

et al. 2020

Journal of the Air & Waste Management Association

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Road traffic is one of the main sources of particulate matter (PM) in the atmosphere. Despite its importance, there are significant challenges in the quantitative evaluation of its contribution to airborne concentrations. In order to propose effective mitigation scenarios, the proportions of PM traffic emissions, whether they are exhaust or non-exhaust emissions, should be evaluated for any given geographical location. In this work, we report on the first study to evaluate particulate matter emissions from all registered heavy duty diesel vehicles in Qatar. The study was applied to an active traffic zone in urban Doha. Dust samples were collected and characterized for their shape and size distribution. It was found that the particle size ranged from few to 600 μm with the dominance of small size fraction (less than 100 μm). In-situ elemental composition analysis was conducted for side and main roads traffic dust, and compared with non-traffic PM. The results were used for the evaluation of the enrichment factor and preliminary source apportionment. The enrichment factor of anthropogenic elements amounted to 350. The traffic source based on sulfur elemental fingerprint was almost 5 times higher in main roads compared with the samples from non-traffic locations. Moreover, PM exhaust and non-exhaust emissions (tyre wear, brake wear and road dust resuspension) were evaluated. It was found that the majority of the dust was generated from tyre wear with 33% followed by road dust resuspension (31%), brake wear (19%) and then exhaust emissions with 17%. The low contribution of exhaust PM 10 emissions was due to the fact that the majority of the registered vehicle models were recently made and equipped with efficient exhaust PM reduction technologies. Implication: This study reports on the first results related to the evaluation of PM emission from all registered diesel heavy duty vehicles in Qatar. In-situ XRF elemental analysis from main, side roads as well as non-traffic dust samples was conducted. Several characterization techniques were implemented and the results show that the majority of the dust was generated from tyre wear, followed by road dust resuspension and then brake wear; whereas exhaust emissions were tremendously reduced since the majority of the registered vehicle models were recently made and equipped with efficient exhaust PM reduction technologies. This implies that policy makers should place stringent measures on old vehicle license renewals and encourage the use of metro and public transportation.

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“…Total MSW generation has increased to more than 12 million tons per year and the per capita MSW in KSA is 1.50-1.80 kg person -1 day -1 [3]. The common method of MSW disposal in the city is landfilling [4,5], which can have negative environmental impacts. In addition, the continual rise in MSW generation will require more new landfills to be constructed, and this will add extra cost that could have been avoided if other options of MSW management had been considered [6][7][8].…”

mentioning

confidence: 99%

Deriving Compost from Municipal Organic Wastes in Saudi Arabia

Mutairi¹,

Ghoneim²,

Modaihsh³

et al. 2019

Pol. J. Environ. Stud.

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Municipal solid wastes (MSW) are the most complex solid wastes stream [1]. Riyadh, the capital of the Kingdom of Saudi Arabia (KSA), is the country's largest city with an area of 1913 km 2 and population of 33 million [2]. The city's population has increased rapidly, causing a higher generation rate of MSW that contains both domestic and commercial waste. The large amount of waste creates lots of problems in daily life and for the environment. It requires the application of some effective strategies for

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Characterizations of Deposited Dust Fallout in Riyadh City, Saudi Arabia

Cited by 15 publications

References 19 publications

Investigations on Deposited Dust Fallout in Urban Doha: Characterization, Source Apportionment and Mitigation

Investigations on Deposited Dust Fallout in Urban Doha: Characterization, Source Apportionment and Mitigation

Evaluation of particulate matter emissions from non-passenger diesel vehicles in Qatar

Deriving Compost from Municipal Organic Wastes in Saudi Arabia

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