About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Recycling and Environmental Technologies
|
| Presentation Title |
Comparison of fluoride removal performance of La(III), Al(III), and Mg(II) salts |
| Author(s) |
Hongfei Ma, Guihong Han, Yanfang Huang, Wenjuan Wang |
| On-Site Speaker (Planned) |
Hongfei Ma |
| Abstract Scope |
Excessive fluoride ions in metallurgical wastewater adversely impact both environmental ecosystems and human health. This study investigated the chemical forms of 10 mg/L fluoride, 12.19 mg/L La(III), 2.37 mg/L Al(III), and 3.20 mg/L Mg(II) ions, including their respective chemical forms and the respective chemical forms of each metal ions when coexisting with fluoride ions. The fitting results demonstrated that Al and La exhibit strong chelation effects with fluoride ions. The fluoride removal efficiency and metal utilization rates were investigated for three metal salts under varying pH conditions. The pH results indicated that La(III) salts exhibit excellent fluoride removal efficiency under acidic conditions. 12.19 mg/L La(III) ions at a 1:6 molar ratio with 10 mg/L fluoride ions achieved 51.98% fluoride removal with 99.99% La(III) utilization efficiency at pH 5.0. The results indicated that the La(III) salts showed significant application in the treatment of low-concentration fluoridated metallurgical wastewater. |
| Proceedings Inclusion? |
Undecided |