ABOUT INDEXING BOARD ARCHIVES AUTHOR GUIDELINES SUBMIT PAPER AUTHORS'S SUBSCRIPTIONS AUTHORS'S PAGE PUBLISHING ETHICS NEWS, EVENTS
REVISTA DE CHIMIE
Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
ISSN 0034-7752
ISSN 2668-8212 (Online)
Journal Metrics
* Impact Factor 2018-19: 1.605
* 5-Year IF: 1.34
* CiteScore: 1.23
* SNIP: 0.710
* SJR: 0.294
(academic-accelerator.com)
Crossref Member Badge
 DOI  logo

REVISTA DE CHIMIE Latest Issue

LATEST ISSUE >>>

   Volume 71, 2020
   Volume 70, 2019
   Volume 69, 2018
   Volume 68, 2017
   Volume 67, 2016
   Volume 66, 2015
   Volume 65, 2014
   Volume 64, 2013
   Volume 63, 2012
   Volume 62, 2011
   Volume 61, 2010
   Volume 60, 2009
   Volume 59, 2008
   Volume 58, 2007
   Volume 57, 2006
   Volume 56, 2005
   Volume 55, 2004
   Volume 54, 2003
   Volume 53, 2002
 
<<<< back

Revista de Chimie, Volume 59, Issue 1, pp. (2008)




Experimental Modelling of the Radionuclides Diffusion Process in Uranifer Tailing Dum

Abstract:

Generally, the uranifer tailings dump are not protected. During the time appear chemical and physical modifications which favour spreading of the radioactive contaminant into the environment, because of the waters provided from precipitations with pH variation (acid rainfall, snow), solar radiance, variation of temperature and humidity, interaction of different minerals from the waste rock with infiltration water during the flow, leading to precipitations phenomenon, ionic exchange, adsorption and re-dissolving <2>. As a rule, the speed of radionuclides diffusion from radioactive tailings dump depends on each of these factors and is very specific to the hydro and geochemistry of the nearest rocks <7>. Because of that, the scientific research is very difficult and will obliges us to study through the simplified physical systems but maintaining the important parameters which are influencing the diffusion process of the contaminant in the environment. The main objective of this paper is to characterize hydro and geochemistry properties controlling the migration of radionuclides extracted from tailings dump into the environment, including the processes of sorption and adsorption and neglecting other physical processes as precipitation, ion exchange or some other geochemical interactions within the system. For this purpose we made studies on 226Ra and Unat extraction from uranifer tailings dump analyzed in pure water in dynamic system, studies about the influence of clay presence on speed of diffusion process in sorption and adsorption phenomenon. Finally we made a prediction for long term about variation of concentrations of 226Ra and Unat based on experimental data using some software programs from literature <8>. Keywords: adsorption, prediction, migration, clay, radioactive waste

Issue: 2008 Volume 59, Number 1
Pages:
download pdf   Download Pdf Article
 
Views number: 93    |     Downloads number: 26  
<<<< back
 
PUBLISHING SECTION
Author Guidelines
 * Paper Drafting
 * Paper Template
 * Paper Submission
 * Author Payments
Ghidul Autorului (ro)
Publishing Ethics
Submit Paper
Author's Page
  Search Authors
  News, Events
 chimie
*REVISTA DE CHIMIE - 70 de ani de aparitie neintrerupta*

Un eveniment special pentru comunitatea stiintifica din Romania va fi organizat in data de
4 martie 2020
Hotel Hilton Athenee Palace Bucuresti
Sala Regina Maria
ora 9.30.

Va asteptam.
 Chemistry Conferences Conferences of Contemporary Chemistry
 Publicatii de Chimie Publicatii de Chimie in Romania.
Scurt istoric
 BIBLIOTECA CHIMIEI Biblioteca Chimiei
 Materiale Plastice Materiale Plastice