Jiangxi Provincial Natural Science Foundation for Young Scientists: Formation of Silicic Acid Colloid and Its Adsorption Control Mechanism on Rare Earth Ions During the Recovery of Spent Rare Earth Phosphors (Project No. 20181BAB216025), Department of Science and Technology of Jiangxi Province, Funding: 0.06 million CNY, 2018.01-2020.12, Principal Investigator, Completed.