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

AUTOR(ES)

Oliveira, Elizabeth Eugenio de Mello, Barbosa, Celina Cândida Ribeiro, Afonso, Júlio Carlos

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2013

RESUMO

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.

Documentos Relacionados

• LOW-LEVEL RADIOACTIVE WASTES—TREATMENT, HANDLING, DISPOSAL
• Microbial activity of trench leachates from shallow-land, low-level radioactive waste disposal sites.
• Accelerated Biodegradation of Cement by Sulfur-Oxidizing Bacteria as a Bioassay for Evaluating Immobilization of Low-Level Radioactive Waste
• Low-Level Vancomycin Resistance in Clostridium innocuum
• Monitoring of Low-Level Virus in Natural Waters