http://www.cnr.it/ontology/cnr/individuo/prodotto/ID186461
Radiological impact of phosphogypsum discharged into the Venice lagoon: 222Rn (Contributo in atti di convegno)
- Type
- Label
- Radiological impact of phosphogypsum discharged into the Venice lagoon: 222Rn (Contributo in atti di convegno) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1051/epjconf/20122406001 (literal)
- Alternative label
Cantaluppi C.; Ceccotto F. ; Cianchi A. ; Fasson A.; Degetto S. (2012)
Radiological impact of phosphogypsum discharged into the Venice lagoon: 222Rn
in Environmental Radioactivity New frontiers and developments, Rome, 25-27 October 2010
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Cantaluppi C.; Ceccotto F. ; Cianchi A. ; Fasson A.; Degetto S. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- Vol. 104 Proceedings of ER2010 - Environmental Radioactivity New Frontiers and Developments (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Titolo
- Radiological impact of phosphogypsum discharged into the Venice lagoon: 222Rn (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
- 978-88-7438-069-5 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
- W. Plastino; P.P. Povinec (literal)
- Abstract
- For about 20 years, between the 60's and the 80's of the last century,
in the Passo a Campalto area (Lagoon of Venice - Italy) about
400,000m3 of phosphogypsum (PG) were deposited at the border of
the lagoon and next to urban areas without any environmental control.
These materials are a by-product formed during the wet processing
of phosphate rocks by sulphuric acid and have a significant environmental
impact due to their abundance and their chemical-physical
and radiochemical characteristics. The PG contains both chemical elements,
which are considered dangerous for the ecosystems and natural
radionuclides whose concentrations are much higher if compared to
those typical for the Earth's crust. These discarded materials caused
for many years the dispersion of radionuclides in the environment due
to the tidal erosion, the re-suspension of radioactive inhalable dusts,
the uncontrolled radon exhalation and the bioaccumulation of some
radionuclides in the lagoon environment. After a decision of the appointed
authorities, the Venice Water Authority (Ministry of Infrastructure
and Transport), planned a permanent safety control of the
site resulting in the complete isolation of the entire volume of contaminated
materials from the environmental system. The entire project
was specific for the particular features of the site and it required the
improvement of analytical, sampling and measurement techniques in
order to verify the effectiveness of the safety action. The radon assessment,
in particular the check of the effectiveness of the inhibition
of radon exhalation, is part of a more complex study, covering many
other aspects of the management of a permanent disposal; they will be
the object of further notes. The ultimate results of this study prove
the efficacy of the intervention: radon concentrations in air and exhalation
values from the restored area, measured during surveys, have
been proved to be well in agreement with those of non contaminated
soils. (literal)
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