PREPARATION OF SILVER-CONTAINING NATURAL ZEOLITES WITH IMPROVED POROUS CHARACTERISTICS AS SORBENTS FOR WATER PURIFICATION

The widespread application of Ukrainian natural zeolites in sorption and catalysis is limited by the shortcomings their porous structure. Chemical modification permits significant changes properties. purpose this work was to obtain silver-containing clinoptilolite type with improved characteristics acid treatment study antibacterial Mild dealumination rock carried out using ethylenediaminetetraacetic for 15 hours at 90 °C, which significantly increased specific surface area sample m2/g, volume micropores 0.037 cm3/g, determined low-temperature nitrogen adsorption/desorption. An establishment a change chemical composition during processing X-ray fluorescence analysis made. Additional silver amount 1 wt % impregnation solution nitrate. water three lakes Kyiv studied total viable count means sowing nutrient agar. results were analyzed selected evaluate effectiveness synthesized sorbent. properties zeolite confirmed worst samples, quality which, terms count, not only norms but also indicators drinking water.