Efficient uptake of Sr and Co using fabricated inorganic sorbent for reducing radiation doses of simulated low-level waste.

The present study investigated the sorption behavior of Sr and Co radionuclides from aqueous solutions onto tin molybdate (SnMo) sorbent. SnMo has been synthesized using the precipitation method and was characterized using four analytical techniques including FT-IR, XRD, SEM, and XRF. The sorption studies applied on Sr and Co include the effect of shaking time, pH, concentration, and saturation capacity. The experimental data revealed that the sorption process was carried out after equilibrium time (180 min). The saturation capacity for Sr and Co is measured to be 58.1 and 52.2 mg g, respectively. The sorption behavior of studied radionuclides is dependent on pH values. Sorption kinetic better fit with the pseudo-second-order model. Furthermore, the sorption isotherm is better represented by the model proposed by Langmuir. The results of the desorption investigations indicated that the most effective eluents for achieving full recovery of investigated radionuclides were identified. Finally, the recycling results demonstrate the suitability of SnMo for affected sorbing of Sr and Co from aqueous solutions. All the obtained data clarify that the SnMo sorbent is an effective means of removing Sr and Co from liquid waste.