Stability of a nanofiltration membrane after contact with a low-level liquid radioactive waste

Química Nova

Elizabeth Eugenio De Mello Oliveira²  Celina Cândida Ribeiro Barbosa²  Júlio Carlos Afonso¹ 

[1] ,Instituto de Engenharia NuclearRio de Janeiro RJ ,Brasil

关键词: uranium;    nanofiltration;    waste treatment;   

DOI  :  10.1590/S0100-40422013000900026

来源: SciELO

【 摘 要 】

This study investigated the treatment of a liquid radioactive waste containing uranium (235U + 238U) using nanofiltration membranes. The membranes were immersed in the waste for 24-5000 h, and their transport properties were evaluated before and after the immersion. Surface of the membranes changed after immersion in the waste. The SW5000 h specimen lost its coating layer of polyvinyl alcohol, and its rejection of sulfate ions and uranium decreased by about 35% and 30%, respectively. After immersion in the waste, the polyamide selective layer of the membranes became less thermally stable than that before immersion.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License