▎ 摘　　要

Cesium radioisotopes are among the majors that are presented in liquid radioactive waste causing long-term environmental threats. The mandatory treatment of these streams is regenerative goal in which adsorption techniques are focal. Calcium alginate/graphene-sodium dodycyl sulfate (CA/GR-SDS) nanocomposite beads were synthesized/characterized and their sorption properties toward Cs+ were evaluated. Beads were of amorphous nature and the essential components were detected by FT-IR. Batch and fixed-bed column studies were explored. The highest sorbed Cs+ amounts were acquired within the 1st- 30 min of contact time. The pseudo 2nd-order model gave the best fitting of the experimental kinetic data. Simple thermodynamic models have been applied to the isotherm sorption data and the relevant thermodynamic parameters were determined from the graphical presentation of these models. Increasing temperature gave lower quantities of sorption capacities. The estimated thermodynamic parameters disclosed the exothermic spontaneous ease of all sorption processes where negative Delta H-o and Delta G(o) quantities were gained. Curves of Cs+ breakthrough from CA/GR-SDS were constructed at varied bed depths (2.0, 4.0, and 8.0 cm) and flow rates (1.0 and 2.0 mL/min). Increasing the bed depth to 8.0 cm, slower exhaustion time was observed (15.5 h). Capacities and performances of beds were increased from 24.85 to 214.46 mg/g and from 13.67 to 29.89%, respectively, by increasing bed depths from 2.0 to 8.0 cm. A fast exhaustion time were observed with increasing the flow rate to 2.0 mL/min (1.17 h).