Radiological characteristics and investigation of the radioactive equilibrium in the ashes produced in lignite-fired power plants

Karangelos, D.J.; Petropoulos, N.P.; Anagnostakis, M.J.; Hinis, E.P.; Simopoulos, S.E.

doi:10.1016/j.jenvrad.2004.03.009

Cited by 84 publications

(53 citation statements)

References 13 publications

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“…As a result of the depletion of raw materials, the reuse of these materials has become the focal point of interest. On the one hand, reuse could reduce the environmental impact of deposited by-products, while the health risks of doing so can be prevented by the dusting of reservoirs in the vicinity of inhabited areas (Kovács et al 2012;Karangelos et al 2004). …”

Section: Introductionmentioning

confidence: 99%

Influencing effect of heat-treatment on radon emanation and exhalation characteristic of red mud

Sas

Szántó

Kovács

et al. 2015

Journal of Environmental Radioactivity

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The reuse of industrial by-products is important for members of numerous industrial sectors. However, though the benefits of reuse are evident from an economical point of view, some compounds in these materials can have a negative effect on users' health.In this study, the radon emanation and exhalation features of red mud were surveyed using heattreatment (100 to 1200°C). As a result of the 1200°C-treated samples, massic radon exhalation capacity reduced from 75 ± 10 mBq kg -1 h -1 to 7 ± 4 mBq kg -1 h -1 , approximately 10% of the initial exhalation rate.To find an explanation for internal structural changes, the porosity features of the heat-treated samples were also investigated. It was found that the cumulative pore volume reduced significantly in less than 100 nm, which can explain the reduced massic exhalation capacity in the high temperature treated range mentioned above.SEM snapshots were taken of the surfaces of the samples as visual evidence for superficial morphological changes. It was found that the surface of the high temperature treated samples had changed, proving the decrement of open pores on the surface.

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Section: Introductionmentioning

confidence: 99%

Influencing effect of heat-treatment on radon emanation and exhalation characteristic of red mud

Sas

Szántó

Kovács

et al. 2015

Journal of Environmental Radioactivity

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“…This also gives us understanding that during dry seasons, the possibility of getting high radionuclide aerosols due to the availability of dust particles which especially from forest fires in air column will be higher [33,39]. Significant contributions of biogenic particles from fossil fuel burning by-products has also been reported elsewhere [18,20,39,41,42].…”

Section: Total Suspended Particles (Tsp) Concentrationsmentioning

confidence: 76%

“…In addition, one of the main reason is due to polonium is more volatile than lead thus 210 Po content was in excess compared to 210 Pb [42]. On the other hand, the continuous atmospheric photochemistry induced by solar radiation could also be less effective during hazy condition, causing less vertical mixing of the troposphere [43].…”

Section: Total Suspended Particles (Tsp) Concentrationsmentioning

confidence: 99%

Correlation between total suspended particles and natural radionuclide in malaysia maritime air during haze event in june july 2009

Sabuti¹,

Mohamed²

2018

J. CleanWAS

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Atmospheric particles in the surface air including aerosol and dust were collected using high volume air sampler (HVAS) for obtaining the activity levels of 210 Pb and 210 Po over Malaysian waters during the EPSP'09 Scientific Expedition. The average mass concentration of total suspended particles (TSP) in maritime air was 33 ± 2 µg/m 3 (ranged from 13 ± 1 to 74 ± 4 µg/m 3 ). Based on previous literatures, it has been suspected that the haze episodes were mainly due to forest and peat bog fires as well as vehicle and industrial emissions during dry period, especially during southwest monsoon. Consequently, the activity levels of 210 Pb and 210 Po in maritime particles were relatively in proportion with the TSP concentrations. Meanwhile, the temporal variation of 210 Po/ 210 Pb activity ratios in the aerosol samples perhaps related to the difference of residence time airborne particles and contribution from different sources of radionuclides in which 210 Pb and 210 Po are not in secular equilibrium. The highest TSP concentrations and 210 Pb and 210 Po activities were closely related to warm and dry period during southwest monsoon.

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“…΄Ετσι στην πιο πρόσφατη εργασία [97] παρέχει τις ακόλουθες ενδεικτικές τιµές για τις συγκεντρώσεις των εν λόγω στοιχείων στον λιγνίτη :…”

Section: εισαγωγήunclassified

“…Στο παρελθόν έχουν γίνει µελέτες για την συµπεριφορά των ανόργανων στοιχείων και ενώσεων στα διάφορα κλάσµατα της ιπτάµενης και υγρής τέφρας [34], [35], [41], [72], [95], [97], [102], [119], [178], [207]. Οι µελέτες αυτές έδειξαν ότι τα ιχνοστοιχεία, τα οποία υπάρχουν µέσα στον λιγνίτη πριν την καύση του, κατανέµονται µε διαφορετικό τρόπο στα σωµατίδια της τέφρας.…”

Section: εµπλουτισµός των σωµατιδίων της ιπτάµενης τέφραςunclassified

Μοντέλα Διακίνησης Και Εναπόθεσης Στερεών Σωματιδίων Ιπτάμενης Τέφρας Στο Περιβάλλον Και Συνακόλουθες Ραδιολογικές Επιπτώσεις Στην Λεκάνη Της Μεγαλόπολης

Παπαδόπουλος¹

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Radiological characteristics and investigation of the radioactive equilibrium in the ashes produced in lignite-fired power plants

Cited by 84 publications

References 13 publications

Influencing effect of heat-treatment on radon emanation and exhalation characteristic of red mud

Influencing effect of heat-treatment on radon emanation and exhalation characteristic of red mud

Correlation between total suspended particles and natural radionuclide in malaysia maritime air during haze event in june july 2009

Μοντέλα Διακίνησης Και Εναπόθεσης Στερεών Σωματιδίων Ιπτάμενης Τέφρας Στο Περιβάλλον Και Συνακόλουθες Ραδιολογικές Επιπτώσεις Στην Λεκάνη Της Μεγαλόπολης

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