Study on the Influence of Different Molten Salt Systems on the Composition of Resin Molten Salt Oxidation Products
A high-efficiency molten salt oxidation strategy for hazardous spent ion-exchange resins is much needed. The optimized ternary carbonate system (Li2CO3-K2CO3-Na2CO3, 44:26:30 wt%) with a 1:1 salt-to-resin ratio achieves oxidation efficiencies above 98% for single resins and 99% for mixed resins at 800–850 °C for 2 h. A pre-pyrolysis at 550 °C for 0.5 h traps volatile pollutants released at 300–550 °C. An excess air coefficient of 1.25 accelerates the breakdown of sulfur-carbon bonds, eliminating toxic hydrocarbons and CO. This work provides reliable parameters for industrial treatment of such hazardous waste.
Authors
- Sheng‐Rong Guo (ORCID: https://orcid.org/0000-0002-4220-8550)
- Yu Zhang (ORCID: https://orcid.org/0000-0002-2358-0904)
- Xuepeng Wang (ORCID: https://orcid.org/0000-0002-9364-9639)
- Haizhou Cao (ORCID: https://orcid.org/0000-0001-5205-3217)
- Haiqian Dong (ORCID: https://orcid.org/0009-0007-4050-9679)
- Yanghai Zheng
- Zhiqiang Dong
- Suwen Chen
- Feichi Liu
- Yongde Yan
Institutions
- Harbin Engineering University (CN)
- Yantai University (CN)
- Lishui University (CN)
- Suzhou Nonferrous Metals Research Institute (CN)
- Lishui Academy of Agricultural Sciences (CN)
Publication Details
- Journal
- Inorganics
- Published
- 2026-07-26
- DOI
- https://doi.org/10.3390/inorganics14080199
- Primary Topic
- Molten salt chemistry and electrochemical processes
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China