Projects per year
Abstract
Several exposure assessment models use dustiness as an input parameter for scaling or estimating exposure during powder handling. Use of different dustiness methods will result in considerable differences in the dustiness values as they are based on different emission generation principles. EN17199:2019 offers 4 different dustiness test methods considering different dust release scenarios (e.g. powder pouring, mixing and gentle agitation, and vibration). Conceptually, the dustiness value by a given method can be multiplied with a scenario-specific modifier, called a handling energy factor (Hi), that allows conversion of a dustiness value to a release constant. Therefore, a Hi, scaling the effective mechanical energy in the process to the energy supplied in the specific dustiness test, needs to be applied. To improve the accuracy in predictive exposure modelling, we derived experimental Hi to be used in exposure algorithms considering both the mass- and number-based dust release fraction determined by the EN17199-3 continuous drop (CD) and the EN17199-4 small rotating drum (SRD) test methods. Three materials were used to evaluate the relationship between dustiness and dust levels during pouring powder from different heights in a controlled environment. The results showed increasing scatter and difference between the Hi derived for the 2 test methods with increasing pouring height. Nearly all the Hi values obtained for both SRD and CD were <1 indicating that the dustiness tests involved more energy input than the simulated pouring activity and consequently de-agglomeration and dust generation were higher. This effect was most pronounced in CD method showing that SRD mechanistically resembles more closely the powder pouring.
Original language | English |
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Article number | wxae009 |
Journal | Annals of Work Exposures and Health |
Volume | 68 |
Issue number | 3 |
Pages (from-to) | 295-311 |
Number of pages | 17 |
ISSN | 2398-7308 |
DOIs | |
Publication status | Published - 15 Mar 2024 |
Keywords
- dustiness
- modelling
- exposure assessment
- exposure modelling
- Tools
- powder
- nanomaterial
- Particles
- respirable dust
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Dive into the research topics of 'Development of handling energy factors for use of dustiness data in exposure assessment modelling'. Together they form a unique fingerprint.-
HARMLESS: Advanced High Aspect Ratio and Multicomponent materials: towards comprehensive intelLigent tEsting and Safe by design Strategies
Vogel, U. B., Jensen, K. A., Danielsen, P. H., Fonseca, A. S., Poulsen, S. S., Nøjgaard, J. N. K., Berthing, T. & Mortensen, A.
01/01/2021 → 31/01/2025
Project: Research
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FFIKA: Fornyet fokus på forskning i kemisk arbejdsmiljø
Vogel, U. B., Jensen, K. A., Jensen, A. C. Ø., Berthing, T., Andersen, M. H. G., Hougaard, K. S., Clausen, P. A., Frederiksen, M., Mortensen, A., Saber, A. T., Jacobsen, N. R., Akhtar, Y., Asp, A., Abildtrup, A., Tegner, U., Terrida, E. B., Guldbrandsen, M., Kembouche, Y., Kofoed-Sørensen, V., Nielsen, S. H., Sahlgren, N. M., Fonseca, A. S., Danielsen, P. H., Sørli, J. B., Hadrup, N., Ardenkjær-Skinnerup, J., Nøjgaard, J. N. K., Jørgensen, A. K. & Gutierrez, C. A. T.
01/01/2020 → 31/12/2026
Project: Research
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Use of the dustiness index in combination with the handling energy factor for exposure modelling of nanomaterials
Ribalta, C., Jensen, A. C. Ø., Shandilya, N., Delpivo, C., Jensen, K. A. & Fonseca, A. S., Jan 2024, In: NanoImpact. 33, p. 100493 1 p.Research output: Contribution to journal › Journal article › Research › peer-review
Open Access -
Evaluation of one- and two-box models as particle exposure prediction tools at industrial scale
Ribalta, C., López-Lilao, A., Fonseca, A. S., Jensen, A. C. Ø., Jensen, K. A., Monfort, E. & Viana, M., Sept 2021, In: Toxics. 9, 9, p. 201 18 p.Research output: Contribution to journal › Journal article › Research › peer-review
Open Access -
Development of handling energy conversion for use dustiness data in exposure assessment modelling
Fonseca, A. S., Carrasco, C. R., Jensen, ACØ., Nielsen, S., Larsen, B. X. N., Shandilya, N., Fransman, W. & Jensen, KA., Nov 2020, p. 16-16.Research output: Contribution to conference › Conference abstract for conference › Research
Activities
- 1 Lecture and oral contribution
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NANOTOOLS - Human (occupational) risk assessment of manufactured nanomaterials (NM)
Keld Alstrup Jensen (Speaker)
22 Nov 2023Activity: Talk or presentation › Lecture and oral contribution