Comparison of Particle Size Distribution Data Obtained with Cascade Impaction Samplers and from Coulter Counter Analysis of Total Dust Samples

Treaftis, H.N.; Kacsmar, P.M.; Suppers, Karen L.; Tomb, T.F.

doi:10.1080/15298668691389405

Cited by 6 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, their result provided a conservative estimate for PM10 percentage. Coulter Counter analysis usually overestimates the amount of smaller particles due to the breakup of agglomerates during sample preparation (Treaftis et al, 1987;Shaw et al, 1998). Therefore, the actual percentage of PM10 present in TSP was expected to be even lower than that measured by the Coulter Counter method.…”

Section: Pm10 Emissionmentioning

confidence: 99%

Measurement of Particulate Matter Emissions From Corn Receiving Operations With Simulated Hopper-Bottom Trucks

Billate¹,

Maghirang²,

Casada³

2004

Transactions of the ASAE

View full text Add to dashboard Cite

Dust emissions from grain elevator operations can be a safety and health risk as well as a nuisance. Fundamental data on air entrainment and dust emission are needed for designing adequate and effective dust emission control methods. This study measured the amount of entrained air and emitted dust during corn receiving operations at an elevator operated by the USDA−ARS Grain Marketing and Production Research Center in Manhattan, Kansas. Shelled corn (maize) was unloaded from a storage bin, representing a hopper−bottom truck, to the receiving pit at rates of 17 to 262 kg/s and drop heights of 38 to 56 cm. Airflow rates were measured with propeller anemometers. The emission rates of total suspended particulates (TSP) and particulate matter smaller than 10 mm aerodynamic diameter (PM10) were measured with high−volume particulate samplers. The amount of air entrained per unit volume of grain decreased with increasing grain flow rate (0.26 to 2.07 m 3 /m 3 ). The emission rates of TSP (8.3 to 52.1 g/metric ton of grain received) and PM10 (0.6 to 6.1 g/t) decreased with increasing grain flow rate and decreasing drop height.

show abstract

Section: Pm10 Emissionmentioning

confidence: 99%

Measurement of Particulate Matter Emissions From Corn Receiving Operations With Simulated Hopper-Bottom Trucks

Billate¹,

Maghirang²,

Casada³

2004

Transactions of the ASAE

View full text Add to dashboard Cite

show abstract

“…PSD analyses of all TSP samples was conducted using a Coulter Counter Multisizer in the Processing Laboratory, Department of Agricultural Engineering to calculate PM10 emission factors. A study performed to compare results obtained from cascade impaction samplers and from Coulter Counter analysis indicated that both these methods have inherent errors associated with particle sizing (Treaftis et al, 1986). A study conducted to compare results obtained with a HiVol PM10 (Wedding) sampler and a Coulter Counter analysis concluded that they were comparable (Raina et al, 1995).…”

Section: Particle Size Distribution (Psd) Analysesmentioning

confidence: 99%

Emission Factors for Grain Receiving and Feed Loading Operations at Feed Mills

Shaw¹,

Buharivala²,

Parnell³

et al. 1998

Transactions of the ASAE

View full text Add to dashboard Cite

T he FCAA signed by President Bush in 1990 has impacted the process used by SAPRAs in regulating air pollution attributed to grain handling facilities including feed mills associated with cattle feed yards. The most significant impact of the FCAA Amendments of 1990 is the establishment of the Title V operating permit program (Novello, 1991). The Title V operating permit program requires that all sources of air pollution designated as major sources will be required to pay Title V annual emission fees and obtain a Federal Operating Permit (FOP). The FCAA Amendments of 1990 will have serious implications for many types of industries, including agriculture (Lesikar et al., 1996; Parnell, 1994; Wallin et al.). Major sources in attainment areas are those emitting more than 91 tonnes (100 tons) of a regulated pollutant per year. In non-attainment areas, facilities emitting less than 91 tonnes (100 tons) of a regulated pollutant may be designated a major source. EPA has established that the annual emission rate of particulate matter less than or equal to 10 microns (PM10) would be used to determine if a grain elevator or feed mill would be a major source (Wegman, 1995). The annual emission rate and Title V emission fee for a pollution source is calculated using AP-42 emission factors published by EPA. AP-42 emission factors are also used by SAPRAs in determining the maximum AER. Hence, there is a need to be as accurate as possible in establishing emission factors for any emitting source. The definition of air pollution can be stated as: ".. . the presence in the outdoor atmosphere of any one or more substances or pollutants in quantities which are or may be harmful or injurious to human health or welfare, animal or plant life, or unreasonably interfere with the enjoyment of life or property, including outdoor recreation," (Cooper and Alley, 1994). The role of air pollution regulations is to protect the public (off site). Regulating air pollution includes three functions: (1) formulation of rules, regulations, and standards which establishes the criteria for enforcement; (2) "permitting" which establishes the controls required for a facility to be in compliance with the rules and regulations; and (3) enforcement which establishes the types of punishment for violators. Enforcement is dependent upon rules, regulations, and permitting. If the rules and regulations (in this case, emission factors) are inaccurate for a particular industry, it will not be possible for SAPRAs to properly regulate emissions attributed to that industry. The AP-42 emission factors (EPA, 1988) for grain elevators and feed mills published by the EPA in 1988 were not correct (Parnell et al., 1994). The EPA recognized the errors and published interim factors for country elevators/feed mills (EPA,1995). The major changes were to reduce the emission factors associated with handling, hammer milling, flaking, cracking, and pellet cooling to zero, while calculating the total emission factor: "For smaller animal feed mills located at cattle feedlots, the mos...

show abstract

Particle Size Analysis

Barth¹,

Flippen²

1995

Anal. Chem.

View full text Add to dashboard Cite

Neutron and X-ray Scattering narrow fractions of ceramic particles for use as standards, within the range of 0.1-100 //m, using an X-ray analyzer Sedigraph.Masinde and Hickey (Til) described a method for the preparation of aqueous suspensions of poly (lactic acid) microspheres (4.2 µ ). MISCELLANEOUSPark et al. (Ul) measured the "strength" of particle aggregation by exposing metal oxide samples to a calibrated ultrasonic field and following the change in the particle size distribution. Particle size measurements were used to characterize the granular composition of historical plaster and mortar from the Spilberk Castle in city of Brno, Czech Republic. Ii and co-workers (U3) determined the particle size distribution of aerosols resulting from indoor cooking of scrambled eggs, fried chicken, and soup. The results of this research effort gave median particle diameters of 40, 50, and 30 nm, respectively.

show abstract

Comparison of Particle Size Distribution Data Obtained with Cascade Impaction Samplers and from Coulter Counter Analysis of Total Dust Samples

Cited by 6 publications

References 0 publications

Measurement of Particulate Matter Emissions From Corn Receiving Operations With Simulated Hopper-Bottom Trucks

Measurement of Particulate Matter Emissions From Corn Receiving Operations With Simulated Hopper-Bottom Trucks

Emission Factors for Grain Receiving and Feed Loading Operations at Feed Mills

Particle Size Analysis

Contact Info

Product

Resources

About