Search academic texts

Information × Registration Number 0204U003190, 0101U002783 , R & D reports Title Physico-chemical investigations of sorbtional-selective characteristics of natural ceolites in contents of radionuclides and heavy metals in liquid media popup.stage_title Head Krasnopjrova A., Registration Date 16-02-2004 Organization Kharkov National University named after V.N.Karazin popup.description2 The report about scientific-research work: 61 p., 14 fig., 18 tab., 41 sources of information. Object of research - natural zeolite clinoptilolite and synthetic zeolites - erionite, NаA, NаX, NаY. The purpose of activity - research of sorption-selectivity natural zeolite clinoptilolite and synthetic zeolites - erionite, NаA, NаX, NаY concerning radionuclides 137Cs, 90Sr and heavy metals: lead, copper, cadmium and mercury depending on the physicochemical factors (density of solution, рН, temperature); analysis of effect of physicochemical properties (charge, size, constitution of electronic shell of occlusioned ions) on ion-exchange responses on zeolites - clinoptilolite, erionite, NаA, NаX, NаY; analysis of isotherms of a sorption and realization of the thermodynamic description of process of exchange on natural and synthetic zeolites. Method of testing - radiometric, X-ray fluorescence and atomic absorption analysis. Complex research of effect of physicochemical properties natural zeolite clinoptilolite and synthetic zeolites, radionuclides 137Cs and 90Sr, heavy metals and their frame, рН of solution, temperature, density of stranger ions and isotope carrier on sorption-selectivity zeolites - clinoptilolite, erionite, NаA, NаX, NаY for the first time is conducted. Is rotined that on sorption-selectivity natural and synthetic zeolites considerable effect render the physicochemical properties and frame of zeolite and occlusioned ions, рН of solution, temperature, density of strangerions and isotope of carriers. The outcomes of analysis of sorption-selective properties zeolites enable to consider this zeolites as breeding a sorbent, which one allows on a sampling basis to select from aqueous solutions large cations alkaline and earth metals, in particular, successfully to use for refinement of a polluted water by radionuclides 90Sr, 137Cs and by heavy metals at low-level salinity. Product Description popup.authors popup.nrat_date 2020-04-02 Close