File:Radioactivité des boues rouges HongrieRedMudRadioactivityMagyar.jpg
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[edit]DescriptionRadioactivité des boues rouges HongrieRedMudRadioactivityMagyar.jpg |
English: Graph describing the radioactivity (gamma radioactivity, in Bq x kg -1 ) of red mud from the extraction of aluminum from bauxite mined in Hungary (radioactivity minimum and maximum).
In the process of extracting alumina, naturally occurring radionuclides in the bauxite are concentrated in the waste metal aluminum companies called "red mud" which can be slightly more radioactive than the ore. These data come from the international INTAILRISK (Assessment of Environmental Risk of radioactively contaminé industrial tailings), financed by Europe, which also looked at the radioactivity of coal ash and slag (also more or Radioactive least according to their origins and have been stored in tanks as sludge) These measures have focused on four radionuclides: Ac-228 (natural isotope of the actinium is a product of the decay chain of uranium 235. It is highly radioactive, 150 times that of radium.) Pa-234m (an isotope of the Protactinium); Bi- 214 ( Bismuth 214, which is radioactive, but also toxic) and K-40 ( Potassium 40, natural isotope of potassium, highly bioavailable via some plants. Its half-life is 1.248 billion years ago) Français : Graphique décrivant la radioactivité (radioactivité gamma, en Bq x kg-1) des boues rouges issues de l'extraction de l'aluminium à partir de la bauxite extraite en Hongrie (radioactivité minimale et maximale). Lors du process d'extraction de l'alumine, les radionucléides naturellement présents dans la bauxite sont concentrés dans le déchet métallurgique aluminier dit "boue rouge" qui peut donc être légèrement plus radioactif que le minerai; Ces données proviennent de l'étude internationale INTAILRISK (Assessment of environmental risk of radioactively contaminated industrial tailings), financée par l'Europe, qui s'est aussi intéressée à la radioactivité des cendres et scories de charbons (également plus ou moins radioactives selon leurs origines et qui ont aussi été stockées dans des bassins sous forme de boue); Ces mesures ont porté sur 4 radionucléides : Ac-228 (isotope naturel de l'actinium qui est un produit de la chaîne de désintégration de l'uranium 235. Il est très radioactif ; 150 fois supérieure à celle du radium.); Pa-234m (un des isotopes du Protactinium) ; Bi-214 (Bismuth 214, qui est radioactif, mais également toxique) et K-40 (Potassium 40, Isotope naturel du Potassium, très bioassimilable via certaines plantes. Sa période radioactive est de 1,248 milliards d'années). |
Source | Own work |
Author | Lamiot |
INTAILRISK (Assessment of environmental risk of radioactively contaminated industrial tailings) archive copy at the Wayback Machine, (Page d'accueil du projet archive copy at the Wayback Machine)consulté 2010/10/16
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current | 08:12, 17 October 2010 | ![]() | 1,010 × 666 (118 KB) | Lamiot (talk | contribs) | {{Information |Description={{en|1=Graph describing the radioactivity (gamma radioactivity, in Bq x kg <sup> -1 </ sup>) of red mud from the extraction of aluminum from bauxite mined in Hungary (radioactivity minimum and maximum). <br /> In the process of |
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Horizontal resolution | 142.522 dpi |
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Software used | Adobe Photoshop Elements 8.0 Windows |
File change date and time | 20:00, 16 October 2010 |
Color space | sRGB |