WebThe simulation results illustrate that ion doping can significantly reduce the amount of CH4 adsorbed by kaolinite, but the type of doped ions has little effect on the amount of adsorption. The specific surface area of kaolinite and the interaction energy between CH4 and the kaolinite’s surface are two key factors that can determine CH4 adsorption … Web10 apr. 2024 · Southern China is rich in ion-adsorption rare earth element (REE) resources, which account for more than 80% of the world's heavy rare earth element (HREE) production supply (Dushyantha et al. 2024; Estrade et al. 2024; Huang et al. 2015; Kynicky et al. 2012; Wall 2013).They are formed by in-situ weathering of host rocks …
A study of rare earth ion-adsorption clays: The speciation …
Web24 feb. 2016 · The modified clay adsorbent can be regenerated by KAl(SO4)2·12H2O. Six times’ regeneration experiments showed that the regeneration rate of the modified clay still higher than 80 %, and the mass loss rate lower than 10 %. The modified clay performed strong adsorption capacity for fluoride ion and high regeneration rate. Web1 aug. 2003 · Kinetics of selenite interactions with Boom Clay: adsorption–reduction interplay Multiple Roles of Clays in Radioactive Waste Confinement Identification of log units in clay rock formations based on local and spatial statistics of well-log properties: application to the Opalinus claystone in the Benken borehole perth omicron outbreak
Adsorptive Applications of Montmorillonite Clay for the Removal …
Web3 dec. 2024 · This is mainly due to the fact that formic acid ions can cooperate with rare earth ions well and form complexes with rare earth ions, which can be easily separated and have good water-solubility, which can encourage rare earth ions to leave the clay minerals surface and enter into the leaching solution. Web10 jan. 2024 · In another study, the adsorption of Pb on clay from Tunisia reached maximum at pH 7 and declined above pH 7 due to formation of Pb precipitates, and the mechanism of adsorption via ion exchange . Similarly, sorption of Cu(II) and Ni(II) onto white montmorillonite from obtained Kahramanmaras show increased adsorption with … Web15 okt. 2024 · This paper reviews LCA studies for determining the environmental impacts of rare earth oxide (REO) production from Bayan Obo and ion adsorption clays (IAC) in … stanley r pearce fresno ca