Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Sorption of cations the heavy metals and radionuclides from the aqueous medium with new synthetic zeolite-similar sorbent

3/22/2017 2017 - #01 Application of nuclear tech

Shilina A.S. Bakhtin V.D. Burukhin S.B. Askhadullin S.R.

DOI: https://doi.org/10.26583/npe.2017.1.11

UDC: 661.879:541.183

For the control and treatment of water environments on nuclear atomic plants are used the expensive traditional sorption materials. This article related on the synthetic aluminosilicate zeolite-similar adsorbent which have ability to effectively purify water from nuclear power plant and other enterprises nuclear industrial complex. Of particular importance are the properties of the sorbent, such as thermal, radiation and chemical resistance that allow to clean hot water at the plant without it pre-cooling. Sorbent is synthesized from inexpensive raw materials which produced by the domestic industry, production is not associated with significant energy costs and realized in a single technological process step. The resulting product has a high specific surface ~ 1000 m2/g, high thermal and chemical resistance: withstands temperatures up to 650°С with maintain their physicochemical and sorption properties, is resistant to aggressive media, radiation dose from 5 to 10 MG no effect on its structure and sorption capability. The sorbent shows high propensity for sorption of cations of heavy metals and radionuclides. Sorption capacity in mg/g up to: Ni2+ – 140, Cu2+ – 160, Fe3+ – 560, Cr3+ – 110, Cs+ – 2000, Sr2+ – 226. Purification factor for 137Сs from solutions of liquid radioactive waste is 2.6. Possible mechanism of spent sorbent utilization – is exposing it for 2 – 3 hours at a temperature from 700 to 800°C. After that this material is highly compacted, changes the bulk densities of from 0.2 g/cm3 to 2.5 g/cm3. Simultaneously, take place melt material and closing pores. It’s supposed that new sorbent can be used at all enterprises which process of production is used complex water purification.


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sorption adsorbent radionuclides cesium strontium sorption capacity heavy metals water treatment recycling