Article ID Journal Published Year Pages File Type
1255165 Chinese Chemical Letters 2012 4 Pages PDF
Abstract

Sorption of Am(III) on Na-bentonite as a function of contact time, pH, ionic strength, humic acid (HA) and temperature was investigated under ambient conditions. The results showed that the sorption was strongly dependent on pH and ionic strength. Am(III) sorption can be described well by pseudo-second-order model. The presence of HA takes a positive effect at low pH; but a negative influence under high pH range. Enthalpy, entropy and Gibbs free energy (i.e., ΔH0, ΔS0 and ΔG0) calculated from sorption isotherms suggested that sorption process of Am(III) was spontaneous and endothermic.

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
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