Wagner de S. Pereira, Alphonse Kelecom
This study aims to assess the behavior of the release of Unat (i.e. uranium isotopes in natural relative abundance) from the release of water treated by the Ore Treatment Unit (UTM) in Caldas, state of Minas Gerais, Brazil, during the years 1999 to 2009. During this period, the unit showed no industrial activity, except between 2004 and 2005, when UTM operated 400 tons of monazite in a process to obtain rare earths. Unat was analyzed by spectrophotometry once per week in the effluent waters at sampling point 014. Two fractions were considered for analysis: the soluble one (that passes through a 0.45 µm filter) and the particulate one (retained on a 0.45 µm filter). Statistical analyses were performed: the “Z” test and Pearson’s r2 correlation index. The values for the soluble fraction were consistently lower than those of the particulate fraction and no statistically significant correlation was observed between the soluble and particulate fractions. However, the particulate and the total fractions (the sum of soluble and particulate) strongly correlated.
@article{e6c2dd0c-2bcd-4cf3-b7e0-fee42c91ff69,
title={Release of Uranium by an Ore Treatment Unit at Caldas, MG, Brazil},
author={Wagner de S. Pereira and Alphonse Kelecom},
year={2013},
language={pt}
}TY - JOUR TI - Release of Uranium by an Ore Treatment Unit at Caldas, MG, Brazil AU - Wagner de S. Pereira AU - Alphonse Kelecom PY - 2013 LA - pt ER -
Jirang Cui, Hans Jørgen Roven
Rapid growth in electronic equipment consumption has generated large quantities of electronic waste containing hazardous substances and high-value met
Rainer Höfer, Thorsten Roloff
Public construction and private housing have a significant impact on the landscape and environment, creating a notable responsibility for the paint an
Florin-Constantin Mihai
E-waste in Transition: From Pollution to Resource examines the dual nature of waste electrical and electronic equipment as both a major pollution sour
Jennifer Namias, Dr. Nickolas J. Themelis
This study explores the future of electronic waste recycling in the United States, addressing the challenges and proposing domestic solutions. The rap
Alain Vignes
This book provides a comprehensive overview of the fundamental principles of extractive metallurgy, with a specific focus on basic thermodynamics and
Alain Vignes
Extractive metallurgy is a critical field that encompasses the processes involved in the extraction of valuable metals from their ores. This work serv