Bio-safe nanocomposite polymer sorbent for the selective binding of Sr and Cs isotopes from liquid medium and the raw mixture for its production

摘要

A method for production of a bio-safe polymer sorbent for selective binding of Sr and Cs isotopes from a liquid medium for treatment of liquid radioactive wastes is provided. The sorbent with high specific sorption capacity in compliance with the requirements of bio-compatibility and safety with respect to the diverse biological objects, is produced. Also, a raw mixture used for the production of the sorbent has a small weight and a volume in comparison with the given sorbent. The structure of the sorbent is formed by self-assembly during the hydration of the dry mix of the components.

主权项

1. A method for production of a sorbent for selective binding of Cs and Sr isotopes from liquid medium, comprising:
producing a homogenous mixture of powdered pentetic acid, sodium alginate, calcium alginate and powdered potassium hydroxide, wherein the homogeneous mixture contains from 0.2 to 1.5 weight parts of pentetic acid, 0.8 to 1.5 weight parts of sodium alginate, 0.01 to 1.3 weight parts of calcium alginate and 1 to 10 weight parts of dry potassium hydroxide; and hydrating the homogeneous mixture and forming the sorbent for the selective binding of Cs and Sr isotopes.