Characteristics of Particulate Matter and Respirable Dust Generation during Live Fire Training for Firefighters

2021 ◽  
Vol 2 ◽  
pp. 175-184
Author(s):  
Seunghon Ham ◽  
Sin-Woong Choi ◽  
Dongjin Oh
Keyword(s):  
Particulate Matter ◽  
Respirable Dust ◽  
Dust Generation

Relationships between Respirable Dust Generation and Coal Seam Characteristics

1996 ◽  
Vol 11 (7) ◽  
pp. 655-661 ◽  
Author(s):  
P. Jha ◽  
H. S. Chiang ◽  
S. Q. Yuan ◽  
R. L. Grayson ◽  
A. W. Khair ◽  
...  
Keyword(s):  
Coal Seam ◽  
Respirable Dust ◽  
Dust Generation

INHALABLE AND RESPIRABLE DUST FROM COAL-FIRED POWER PLANT

2015 ◽  
Vol 77 (30) ◽  
Author(s):  
Shamzani Affendy Mohd Din ◽  
Rashidi Othman ◽  
Nik Nurul Hidayah Nik Yahya ◽  
Norsyamimi Hanapi
Keyword(s):  
Particulate Matter ◽  
Power Plant ◽  
Air Flow ◽  
Human Health Risk ◽  
Health Impact ◽  
Air Pollutant ◽  
Respirable Dust ◽  
The Public ◽  
Inhalable Dust ◽  
Cyclone Sampler

Among the anthropogenic air pollutant that lead to the global warming, this research focuses on the inhalable dust and respirable dust that comes from the emissions of coal. Recently, the demand of electricity supply in Malaysiais raising and leads to the diversification of its resources towards the non-renewable energy. Coal-fired power plant emission had been recognized as one of the manmade sources of particulate matter. 8-hours personal particulate matter sampling had been done at a coal-fired power plant with 7-hole sampler at 2 L/min air flow and cyclone sampler at 2.2 L/min air flow. This study found that 96.78 % of the result from total inhalable dust exceeds the PM10DOE Malaysia standard of 0.15mg/m3. The percentage ratio of respirable towards total inhalable dust is 50.25%. Further analysis showed that as the temperature increases, the particulate matter concentration also increases. It is believed that the smaller particles offer higher degree of human health risk. The particulate from coal with aerodynamic diameter of 2.5 micron and lesser can be deposited into deeper part of lung and provide adverse health impact towards the public or residence of surrounding coal-fired power plant location area, generally and coal-fired power plant workers, in specific.

Investigation of particulate matter performances in relation to chalk selection in classroom environment

2016 ◽  
Vol 26 (1) ◽  
pp. 119-131 ◽  
Author(s):  
Sangita Goel ◽  
Rajesh Patidar ◽  
Krushnakant Baxi ◽  
Rajendra Singh Thakur
Keyword(s):  
Particulate Matter ◽  
Calcium Carbonate ◽  
Physicochemical Properties ◽  
Classroom Environment ◽  
Analytical Techniques ◽  
Age Group ◽  
Dust Generation ◽  
Suspended Particulate ◽  
Average Potential ◽  
Board System

This study aims to understand dust generation in classroom indoor for different chalk varieties and their potential doses to receptors in correlation with their physicochemical properties. Two representative chalks of extruded calcium carbonate and moulded gypsum type (total four) were used for writing on ceramic and wooden boards. Chalks were characterized using analytical techniques. Investigation of Particulate Matter (PM): PM2.5, PM10 and Total Suspended Particulate (TSP) concentrations in classroom air generated during the writing and wiping with chalk and board system was done. Dust collected beneath the board was analyzed for particle size distribution. Calcium carbonate made dustless chalks generate less PM during writing and wiping. They are quick settling and non-interacting with receptors, and deliver better utilization of material as compared to gypsum chalks. Physicochemical properties of the chalk constituents were invoked to explain the dust generation and its impact on the user. Surprisingly, dustless chalk made from Gypsum cannot be called really as dustless because of more PM emissions. The age-specific average potential dose for both PM10 and PM2.5 is higher for gypsum chalk as compared to the calcium carbonate chalks. The highest dose was estimated for the children in the age group of 6–11 years.

scholarly journals Measurement of respirable dust concentration and assessment of health risk due to metals around an opencast coal mine of Talcher, Odisha

Geofizika ◽  
2019 ◽  
Vol 36 (1) ◽  
pp. 77-106
Author(s):  
Debi Prasad Tripathy ◽  
Tushar Ranjan Dash
Keyword(s):  
Particulate Matter ◽  
Trace Metals ◽  
Health Risk ◽  
Coal Mine ◽  
Dust Concentration ◽  
Respirable Dust ◽  
Risk Level ◽  
Opencast Coal Mine ◽  
Carcinogenic Effects ◽  
Safe Limit

Atmospheric pollution due to particulate matter in opencast coal mining area is a very important environmental problem and is fetching the attention of researchers worldwide since few decades. The particulate matter not only affects human but also have tremendous effects on nearby flora and fauna by degrading the ecological environment in many ways. High mechanization in mining operations leads to add heavy load of dust to the surrounding area. The adverse effects of dust depend on the quantity as well as the characteristics of the dust and the exposure dose. Taking the importance of the dust pollution in mines, a coal mine area of Talcher coalfield, was selected, which is one of the oldest coalfields of India and a very limited work has been carried out in that area on the regards of assessment of health risk due to metals on the local population. Monitoring of respirable dust (PM10 & PM2.5) were performed at eight monitoring stations around a high mechanised opencast coal mine for three seasons i.e., post monsoon, winter, and summer in the year 2015 as per the standard criteria of Central Pollution Control Board (CPCB), India. The seasonal variation of dust concentration was found in the order of winter > summer > post monsoon. Ten trace metals were analysed from the dust samples. Statistical analysis, such as, univariate (correlation study) and multi-variate analysis were carried out including principal component analysis (PCA) for source identification and respective contribution to particulate matter. Finally, the health risk in terms of hazards quotient (HQ) and hazards index (HI) were calculated for both children and adults for the three exposure path ways (Inhalation, ingestion and dermal exposure). The carcinogenic effects due to the presence of trace metals in the PM10 were evaluated for both children and adults in terms of excess cancer risk (ECR). The combined carcinogenic effects of all the trace metals also calculated (ECRtotal). The HQ values for Cr and Cd were found above the safe limit in that area for both children and adults. Likewise the ECR values for Cr and Cd also were at a very risk level for both the age group. However the risk related to other metals were found well within the safe limit. The HI and ECRtotal values were found above the safe limit which indicates the combined effect of trace metals on the children and adult were at and very high risk level in the study area.

A fundamental study of respirable dust generation in coal

1989 ◽  
Vol 9 (1) ◽  
pp. 87-99 ◽  
Author(s):  
R.K. Zipf ◽  
Z.T. Bieniawski
Keyword(s):  
Respirable Dust ◽  
Fundamental Study ◽  
Dust Generation
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