About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Recycling and Environmental Technologies
|
| Presentation Title |
Study on the Fluoride Ions Removal by Metal Salts Based on Experimental and Theoretical Calculations |
| Author(s) |
Hongfei Ma, Wenjuan Wang, Guihong Han, Yanfang Huang |
| On-Site Speaker (Planned) |
Hongfei Ma |
| Abstract Scope |
Excessive fluoride ions in metallurgical wastewater adversely impact both environmental ecosystems and human health. The results of the chemical species and thermodynamic saturation indices of fluoride ions in the presence of aluminum, lanthanum, and magnesium ions indicate that lanthanum ions exhibit superior removal efficiency for fluoride ions. Batch removal experiments further demonstrate that lanthanum salts have stronger removal performances for fluoride ions compared to aluminum and magnesium ions. Under the conditions of pH 5.0, n(Lał⁺): n(F⁻) of 1:3 and a reaction time of 10 min, lanthanum ions achieved a removal efficiency of 92.09% for fluoride ions. The process of removing fluoride ions from lanthanum salts follows a pseudo-second order reaction model, indicating that this process is a chemical reaction whose reaction rate is influenced by the concentration of reactants in the solution. The results indicated that the lanthanum salts showed significant application in the treatment of low-concentration fluoridated metallurgical wastewater. |
| Proceedings Inclusion? |
Undecided |