Preparation of montmorillonite@carbon composite and its application for U(VI) removal from aqueous solution
2015; Elsevier BV; Volume: 349; Linguagem: Inglês
10.1016/j.apsusc.2015.04.222
ISSN1873-5584
AutoresRui Zhang, Changlun Chen, Jie Li, Xiangke Wang,
Tópico(s)Chemical Synthesis and Characterization
ResumoThe montmorillonite@carbon (MMT@C) composite was synthesized by the one-step hydrothermal carbonization process. U(VI) sorption on MMT@C from aqueous solution was investigated by using batch experiments. The maximum capacity of MMT@C toward U(VI) was 20.76 mg g−1 at pH 3.95, which was much higher than that of the raw MMT. The decoration of the functional carbonaceous species on the MMT@C improved its sorption capacity. U(VI) sorption on the MMT@C was an endothermic process. The inner-sphere surface complexation might be the primary sorption mechanism. MMT@C was a promising material for pre-concentration and immobilization of U(VI) from large volumes of aqueous solution.
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