The removal of some rare earth elements from their aqueous solutions on by-pass cement dust (BCD)
作者： O.I.M. Ali , H.H. Osman , S.A. Sayed , M.E.H. Shalabi
DOI: 10.1016/J.JHAZMAT.2011.08.014
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摘要: Abstract The sorption behavior of yttrium (Y3+), neodymium (Nd3+), gadolinium (Gd3+), samarium (Sm3+) and lutetium (Lu3+) from their aqueous solutions by by-pass cement dust (BCD) has been investigated using a batch technique. on BCD was studied as function pH, shaking time, initial concentration, mass temperature. It found that the capacity had order Lu3+ > Sm3+ > Y3+ > Gd3+ ≈ Nd3+ following Freundlich isotherm at determined optimum conditions. results also demonstrated data fit well pseudo-second-order kinetic model. Thermodynamic parameters such ΔH°, ΔS° ΔG° indicated REEs endothermic, favored high temperature spontaneous in nature.
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