Portal Rasmi Agensi Nuklear Malaysia

TRANSFORMING RADIOACTIVE ORGANIC WASTE INTO APATITE CERAMICS

Filing Number : PI20064504

 

The most common method of stabilizing radioactive phosphorous organic waste for disposal is by incineration but this poses environmental problems due to the release of phosphorous pentoxide and radioactive gases. Besides incineration, other common long-term storage technique of radioactive organic waste is by blending and depositing the waste into solid polymeric or ceramic materials. An alternative process was developed by transforming radioactive contaminated phosphorus organic waste that includes radioactive di-(2-ethylhexyl) phosphoric acid (DEHPA) or phosphoric acid ester waste that are produced by rare earth processing plants or related extraction process into a stable waste in the form of apatite ceramics and zirconia apatite ceramics. Advantages of this process include smaller waste volume, highly stable waste form that melts above 1000oC and cheaper processing costs.