Adsorption and desorption characteristics of rare earth ions on halloysite surfaces

• Autorzy: Long, Qibang , Yan, Huashan , Zhou, Xiaowen , Qiu, Sen , Qiu, Tingsheng
• Języki publikacji: EN

Abstrakty

EN

Rare earths (REs) are primarily adsorbed in ionic form on the surface of clay minerals such as halloysite in ionic rare earth ores. As a result, understanding the adsorption and desorption behaviors of RE ions on the surface of the halloysite may contribute to clarifying the mineralization process of ionic rare earth ores and provide a theoretical framework for the optimization of the extraction process. The adsorption and desorption characteristics of light (Nd3+), medium (Eu3+), and heavy (Lu3+) RE ions on the surface of halloysite-10 Å were comprehensively examined in this study. Because REs are more inclined to form an outer layer and inner layer adsorption when halloysite is protonated and deprotonated with the range of pH, respectively, pH has a significant impact on how halloysite adsorbs and desorbs. The experiment findings indicate that RE concentration, duration, and pH all increased the adsorption capacity of light, medium, and heavy REEs, and exhibited some selectivity for heavy REEs. Nd3+, Eu3+ and Lu3+ ions adsorption processes on the surface of Halloysite-10 Å are consistent with the Langmuir isothermal adsorption model and pseudo-second-order kinetic equations. The desorption efficiency of Lu3+ decreases dramatically with increasing pH due to hydrolysis and more inner layer adsorption than that of Nd3+ and Eu3+.

Słowa kluczowe

EN

ionic rare earth ores; halloysite-10 Å; adsorption; desorption

• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 1
• Strony: art. no. 185763
• Opis fizyczny: Bibliogr. 45 poz., rys., tab., wykr.

Twórcy

autor

Long, Qibang

• 1 Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate Systems, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi Province, P.R. China
• College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China
• Key Laboratory of Green Development and Utilization of Strategic Rare Metal Mineral Resources (Jiangxi University of Science and Technology), Ministry of Education, Ganzhou 341000, Jiangxi Province, P.R. China

autor

Yan, Huashan

• 1 Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate Systems, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi Province, P.R. China,
• College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China
• Key Laboratory of Green Development and Utilization of Strategic Rare Metal Mineral Resources (Jiangxi University of Science and Technology), Ministry of Education, Ganzhou 341000, Jiangxi Province, P.R. China

autor

Zhou, Xiaowen

• College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China,
• Key Laboratory of Green Development and Utilization of Strategic Rare Metal Mineral Resources (Jiangxi University of Science and Technology), Ministry of Education, Ganzhou 341000, Jiangxi Province, P.R. China

autor

Qiu, Sen

• College of Rare Earth and New Materials Engineering, Gannan University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China

autor

Qiu, Tingsheng

• College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China
• Key Laboratory of Green Development and Utilization of Strategic Rare Metal Mineral Resources (Jiangxi University of Science and Technology), Ministry of Education, Ganzhou 341000, Jiangxi Province, P.R. China

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Identyfikatory

DOI

10.37190/ppmp/185763