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

Química Nova

Instituto de Engenharia Nuclear, Rio de Janeiro, Brasil¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil¹  Afonso, Júlio Carlos¹  Barbosa, Celina Cândida Ribeiro¹  Oliveira, Elizabeth Eugenio de Mello¹ 

关键词: uranium;    nanofiltration;    waste treatment.;   

DOI  :  10.1590/S0100-40422013000900026

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown