Evaluation of Sub-micrometer-Sized Particles Generated from a Diesel Locomotive and Jackleg Drilling in an Underground Metal Mine

Abstract Concerns have been raised regarding small respirable particles, i.e. sub-micrometer-sized particles, associated with mining activities. This evaluation was designed to investigate the emissions from jackleg drilling and diesel engines and to characterize the nature of emitted particles using gravimetric analysis and number metrics. The mass concentration to which workers are potentially exposed was determined from a 4-h sampling in the vicinity of drilling activities in an underground metal mine; this concentration was found to be lower than 0.6 mg m−3 of total respirable dust. This mass concentration is low; however, the number concentrations of emitted particles from drilling exceeded 1 × 106 particles cm−3 in areas 7–9 m downwind from the drilling operation. Sub-micrometer-sized particles were also observed in aerosol samples collected using a specialized sampler, and various elements associated with drilling were found among these emitted particles. Finally, the particles in the diesel exhaust were collected, and the exhaust was found to contain nanometer-sized particles.

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Diesel Exhaust, Respirable Dust, and Ischemic Heart Disease

Epidemiology ◽

10.1097/ede.0000000000000954 ◽

2019 ◽

Vol 30 (2) ◽

pp. 177-185 ◽

Cited By ~ 2

Author(s):

Andreas M. Neophytou ◽

Sadie Costello ◽

Sally Picciotto ◽

Daniel M. Brown ◽

Michael D. Attfield ◽

...

Keyword(s):

Heart Disease ◽

Ischemic Heart Disease ◽

Diesel Exhaust ◽

Ischemic Heart ◽

Respirable Dust

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Study on the Design of Venturi Scrubber on Metal Mine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.1087 ◽

2014 ◽

Vol 556-562 ◽

pp. 1087-1091

Author(s):

Shi Bin Wang ◽

Ri Hui Chen ◽

Xiang Yun Meng

Keyword(s):

Diesel Exhaust ◽

High Efficiency ◽

Diesel Exhaust Particles ◽

Solid Particles ◽

Dust Collector ◽

Venturi Scrubber ◽

Mine Dust ◽

Metal Mine ◽

Pilot Programs ◽

Exhaust Particles

Venturi scrubber is a high-efficiency wet dust collector,and has a high capture efficiency for small solid particles. Applied to metal mines, the venturi scrubber not only eliminate the mine dust in the processes of mining and driving, but also can capture the diesel exhaust particles effectively in theory. Then the air in the mine has been purified and the staff can keep away from the harm of mine dust and diesel exhaust particles. Based on the results of this research from the predecessor, the paper design a reasonable set of pilot programs for mine workers.

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Uncertainty of Dust Mass Concentration Measurement

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.611.511 ◽

2014 ◽

Vol 611 ◽

pp. 511-518

Author(s):

Miroslav Dovica ◽

Vladislav Maxim ◽

Michal Kelemen ◽

Tatiana Kelemenová ◽

Ivan Virgala ◽

...

Keyword(s):

Light Scattering ◽

Mass Concentration ◽

Concentration Measurement ◽

Working Environment ◽

Respirable Dust ◽

Respirable Fraction ◽

Dust Mass ◽

Dust Fraction

Paper deals with dust mass concentration measurement in working environment. The measurement is focused to respirable dust fraction, which is dangerous for people. Light scattering principle of dust mass concentration measurement is used for this purpose. Also cyclone as mechanical way of separation of respirable fraction can be used for this purpose. Next problem is determination of uncertainty of this measurement.

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Gravimetric analysis for PM2.5 mass concentration based on year-round monitoring at an urban site in Beijing

Journal of Environmental Sciences ◽

10.1016/j.jes.2015.09.015 ◽

2016 ◽

Vol 40 ◽

pp. 154-160 ◽

Cited By ~ 9

Author(s):

Yanli Wang ◽

Wen Yang ◽

Bin Han ◽

Wenjie Zhang ◽

Mindong Chen ◽

...

Keyword(s):

Mass Concentration ◽

Urban Site ◽

Gravimetric Analysis

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Electron beam treatment of simulated marine diesel exhaust gases

Nukleonika ◽

10.1515/nuka-2015-0098 ◽

2015 ◽

Vol 60 (3) ◽

pp. 689-695 ◽

Cited By ~ 6

Author(s):

Janusz Licki ◽

Andrzej Pawelec ◽

Zbigniew Zimek ◽

Sylwia Witman-Zając

Keyword(s):

Electron Beam ◽

Removal Efficiency ◽

Diesel Engines ◽

Diesel Exhaust ◽

Irradiation Dose ◽

Treatment Technology ◽

Gas Treatment ◽

Exhaust Gases ◽

Marine Diesel ◽

Removal Efficiencies

Abstract The exhaust gases from marine diesel engines contain high SO2 and NOx concentration. The applicability of the electron beam flue gas treatment technology for purification of marine diesel exhaust gases containing high SO2 and NOx concentration gases was the main goal of this paper. The study was performed in the laboratory plant with NOx concentration up to 1700 ppmv and SO2 concentration up to 1000 ppmv. Such high NOx and SO2 concentrations were observed in the exhaust gases from marine high-power diesel engines fuelled with different heavy fuel oils. In the first part of study the simulated exhaust gases were irradiated by the electron beam from accelerator. The simultaneous removal of SO2 and NOx were obtained and their removal efficiencies strongly depend on irradiation dose and inlet NOx concentration. For NOx concentrations above 800 ppmv low removal efficiencies were obtained even if applied high doses. In the second part of study the irradiated gases were directed to the seawater scrubber for further purification. The scrubbing process enhances removal efficiencies of both pollutants. The SO2 removal efficiencies above 98.5% were obtained with irradiation dose greater than 5.3 kGy. For inlet NOx concentrations of 1700 ppmv the NOx removal efficiency about 51% was obtained with dose greater than 8.8 kGy. Methods for further increase of NOx removal efficiency are presented in the paper.

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Improving the Environmental Safety of Locomotive-type Diesel Engines Through the Use of Hydrogen

Ecology and Industry of Russia ◽

10.18412/1816-0395-2020-5-51-57 ◽

2020 ◽

Vol 24 (5) ◽

pp. 51-57

Author(s):

D.Ya. Nosyrev ◽

V.V. Asabin ◽

A.A. Mishkin ◽

L.S. Kurmanova ◽

S.A. Petukhov ◽

...

Keyword(s):

Experimental Data ◽

Diesel Engines ◽

Environmental Safety ◽

Rail Transport ◽

Diesel Locomotive ◽

Reliable Operation ◽

Hydrogen Supply ◽

Harmful Substances ◽

Board System ◽

Emissions Of Harmful Substances

The issue of improving the environmental safety of locomotive-type diesel engines by using hydrogen is considered. The analysis of pollutants that pose a special danger to the atmosphere. To ensure reliable operation of locomotive-type diesel engine with hydrogen supply, an on-board system has been developed. To solve environmental problems in rail transport, the article provides experimental data on the assessment of the effect of hydrogen additives on the levels of emissions of harmful substances on the example of a diesel shunting diesel locomotive ChME3.

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HYGIENIC ASSESSMENT OF THE PARTICULAR MATER CONTENT IN THE AIR OF ZAPORIZHZHIA CITY

Medical Science of Ukraine (MSU) ◽

10.32345/2664-4738.3-4.2017.08 ◽

2018 ◽

Vol 13 (3-4) ◽

pp. 52-56

Author(s):

А.І. Sevalnev ◽

L.P. Sharavara ◽

Yu.V. Volkova

Keyword(s):

Mass Concentration ◽

Continuous Monitoring ◽

Open Hearth ◽

Ambient Air ◽

Respirable Dust ◽

Measuring Instrument ◽

Aerodynamic Diameter ◽

Atmospheric Air ◽

Sporadic Cases ◽

The City

Relevance. The greatest threat to human health is provided by the suspended particular mater with an aerodynamic diameter of 10 μm or less. Since they can lead to an increase of frequency of respiratory and cardiovascular diseases and contribute to an increase in mortality from these diseases. Objective. The research was aimed to carrying out a hygienic assessment of the particular mater content of the PM4 and PM10 fraction in the atmospheric air and in the air of the working area of the metallurgical enterprises. Materials and methods. It was performed the 4000 studies of PM4 and PM10 concentrations in the atmospheric air and 1838 - at workplaces. The study was carried out using a piezo-balanced measuring instrument for mass concentration of respirable dust - KANOMAX 3521. Results. Monitoring of atmospheric air showed that PM4 and PM10 are constant components of atmospheric air in the city of Zaporizhzhya. It was found that the maximum one-time concentrations of PM10 in the ambient air exceeded permissible concentration 20-minute mean only in sporadic cases, with the multiplicity exceeding 1.1-1.2 times. But daily average concentrations of these substances systematically exceeded recommended levels in 1.5 times. It was established that in the agglomeration, in the blast furnace guild and in the open-hearth guild departments the PM10 and PM4 content in the air of the working area was 21.2 and 16.0 times, 31.8 and 24.4 times and 15.5 and 13.2 times more than at workers of factory management, respectively. Conclusion. Organization of constant continuous monitoring of PM content in the air is a prerequisite for a correct assessment of their impact on the health of the population and workers.

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Wastes to Reduce Emissions from Automotive Diesel Engines

Journal of Waste Management ◽

10.1155/2014/807947 ◽

2014 ◽

Vol 2014 ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

Manuel Jiménez Aguilar

Keyword(s):

Waste Water ◽

Sewage Sludge ◽

Diesel Engines ◽

Diesel Exhaust ◽

Water Reuse ◽

No Reduction ◽

Poultry Litter ◽

Waste Waters ◽

Reduce Emissions ◽

Mill Waste

The objective of the study was actually the investigation of the effect of various treatments on the ability of urine in absorbing greenhouse gases. Urine alone or mixed with olive-oil-mill waste waters (O), poultry litter (P), or sewage sludge (S) was used on the absorption of CO2 and NOx from diesel exhaust. The absorption coefficient (0.98–0.29 g CO2/grNH4) was similar to other solvents such as ammonia and amines. The ranges of CO2 absorption(1.7–5.6) g/l and NO reduction (0.9–3.7) g/l in six hours indicate that on average 20 litres of urine could be needed to capture CO2 and NOx vehicle emissions from each covered kilometre. The best results of CO2 absorption and NOx reduction were for urine mixed with O, P and urine alone. These wastes could be used to capture CO2 and NOx from automotive diesel engines to reduce gas emissions. The proposed strategy requires further research to increase CO2 absorption and reduce the risks associated with waste-water reuse.

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