INORGANIC AND ORGANOMINERAL SORBENT
The methods for shaping the surface constitution and structure, pore characteristics and sorption potential of sorbent were elaborated. They are suited, within the frame of unified liquid-phase technology, to vary sorption characteristics of materials prepared: their selectivity, strength to hold sorbed components, stability to radiation and to aggressive chemicals (with tolerance for strong acids) can be tailored for specific desired characteristics of sorption.
The selectivity of sorbents prepared towards soluble and colloid forms of radioisotopes, (namely, Sr, Cs, Ru, Eu, Ra, Np, Ac, etc) or for their range, in acidic liquids with Pb, Cd, Hg, Ag, organic dyes, and some organics (such as amines, amides, the products of protein degradation), equals from 100 to 100,000.
Their sorption capacity equals to 3-6 mg-eqv/g (~ 3,5-7,5 mg-eqv/cm3), they are thermostable
to 350C, and their resistance to radiation is more then
850 MRad.
The materials prepared can be designed for reversible sorption or for distinctly strong binding that eliminates the possibility of readsorption. The latter materials may be used for economically attractive long-term storage of concentrated wastes or for concentration of valuable products in solid sorbent matrices.
This provides the means and ways for isolation or binding of specific components by designing
materials with desired characteristics and that are suited to handle specific problems. These materials may be designed for handling specific problems, if there are
initia requirement for technological regimes of sorption.
Fields of application:
- fixed or mobile purification units that are designed for effective separation or for pronounced strong sorption of single-, di- or poly- charged cations, dyes or complexes of precious metals;
-facilities for long-term storage of toxic wastes (and radioisotopes as well).