Preparation and strontium adsorption behaviors of a new sodium manganese silicate material

Under the great challenge brought by global warming, nuclear power gains sustained attention as an important low-carbon base load power source. Removal of trace amounts of strontium ion ( 90 Sr 2+ ) from highly Na + -rich liquid wastes generated from the process of nuclear fuel cycle can make nuclear power more economical and environmentally-friendly. The efficient and low-cost method is urgent but still absent. In this study, sodium manganese silicate (SMSO) is prepared via one-pot hydrothermal method. The as-prepared material with high specific surface area (∼559.86 m 2 g −1 ) shows high adsorption of 249.0 mg g −1 for Sr 2+ ions. The removal rate of Sr 2+ by material always keeps a high adsorption capacity (above 98%) in the wide pH range of 3–12. Besides, the removal effect can maintain at a high level in the presence of a variety of competitive ions. Owing the combination of the high performance and low cost, the title SMSO becomes a promising Sr 2+ adsorbent for the nuclear wastewater treatment.