Optimization for solidification of low-level-radioactive resin using Taguchi analysis

Area of Science:

• Waste Management
• Materials Science
• Chemical Engineering

Background:

• Low-level-radioactive (LLW) resin requires effective solidification for safe disposal.
• Traditional methods may not meet stringent regulatory standards for radioactive waste containment.

Purpose of the Study:

• To optimize the solidification of LLW resin using Taguchi analytical methodology.
• To identify the optimal ingredient concentrations for LLW mortar that meet Taiwan Power Company (TPC) criteria.

Main Methods:

• Application of Taguchi analytical methodology for experimental design.
• Systematic variation of ingredient concentrations in LLW mortar.
• Measurement of compressive and bending strength at 7, 21, and 28 days post-fabrication.

Main Results:

• Furnace slag and fly ash were identified as dominant materials influencing LLW mortar solidification.
• The optimal mixture composition was determined to be 24 wt.% furnace slag, 24 wt.% fly ash, and 8 wt.% cement.
• This optimal mix, combined with 24 wt.% resin and 20 wt.% water, satisfied TPC requirements.

Conclusions:

• Taguchi methodology effectively optimized LLW resin solidification.
• The identified optimal mixture provides a robust solution for LLW waste management, meeting regulatory strength standards.
• Furnace slag and fly ash are crucial for achieving desired solidification properties in LLW mortar.