Solidification and Stabilization of Spent TBPOK Organic Liquids in a Phosphate Acid-Based Geopolymer

الملخص EN

A method for solidifying spent tributyl phosphate and kerosene (TBP/OK) organic liquids in a phosphate acid-based geopolymer (PAG) was investigated.

The TBP/OK emulsion containing tween 80 (T80), TBP/OK organic liquids, and H3PO4 was prepared.

The TBP/OK emulsion was mixed with metakaolin to obtain solidified TBP/OK forms (SPT).

The compressive strength of the SPT was up to 59.19 MPa when the content of TBP/OK was 18%.

The loss of compressive strength of SPT was less than 10% after immersion and less than 25% after freeze-thaw treatment.

The final setting time was 40.0 h, and the shrinkage of SPT was nearly 3%.

The leaching test indicated that the release of TBP/OK from hardened SPT was limited.

Characterization of SPT suggested that solidification of TBP/OK using PAG occurred by physical encapsulation.