MATERIAL AND EQUIPMENT FOR WATER PURIFICATION FROM LEAD G.V. Medyak, V.I. Sokolova, A.A. Shunkevich, A.V. Bildyukevich*, V.P. Sokol, A.P. Polikarpov NATIONAL ACADEMY OF SCIENCES OF BELARUS INSTITUTE OF PHYSICAL ORGANIC CHEMISTRY

The pollution of water resources by lead compounds is a serious ecological problem, especially in industrially developed regions. Commonly, the level of total lead content in atmospheric precipitations usually ranges from 1 to 50 μg/l, but in areas with intensive industry can reach up to μg /l. Increasing of lead concentration in underground water is causing serious problems concerning drinking water supply in some locations in Middle Asia. Exceeding of the MPC of lead in drinking water (10 μg/l ) in Canada, Europe and some regions of Russian Federation is fixed PROBLEM:

ADVANTAGES: Comparison of the ordinary granular and fibrous ion exchangers high speed of ion exchange, sorption and catalytic processes possibility to use thin (2-6 cm) filtering layers high flow rate high chemical resistance and osmotic stability possibility of multiple regenerations CHEMICALY ACTIVE TEXTILE MATERIALS APPLICATIONS: AIR PURIFICATION FROM TOXIC IMPURITIES IN INDUSTRY AND AGRICULTURE SUPERFINE AIR PURIFICATION IN ELECTRONICS INDIVIDUAL PROTECTIVE MEANS FOR HUMANS SKIN AND LUNGS WATER PURIFICATION FROM HEAVY METALS, NITRATES, ARSENIC, ACIDS DRINKING WATER PRODUCTION

THE AIM OF THE RESEARCH IS TO OFFER THE TECHNOLOGY AND INSTALLATIONS FOR FINE PURIFICATION OF DRINKING WATER FROM LEAD THE NEW APPROACH FOR FINE PURIFICATION OF DRINKING WATER FROM LEAD IS OFFERED. IT CONSISTS IN APPLICATION OF FIBROUS CATION EXCHANGER FIBAN X-1 Cartridges made from FIBAN X-1 yarn CHARACTERISTICS OF THE ION EXCHANGERS USED IN THIS WORK Label of the ion exchanger Functional groups Capacity, m. eqv/g СООНNR 2 FIBAN Х-1 fibrous N(CH 2 COOH) 2 СООН 6,50,6 ANKB-35 granular N(CH 2 COOH) 2 4,60,5

Breakthrough curves for FIBAN X-1(A) and ANKB-35 (B) ion exchangers. 1 - Co 2+, 2 - Ni 2+, 3 - Zn 2+, 4 - Cd 2+, 5 - Cu 2+, 6 - Pb 2+ C/C 0 BV Model solution: eq/l of Cu 2+, Ni 2+, Co 2+, Zn 2+, Cd 2+, Pb 2+ on the background of eq/l of Ca 2+. Filtration rate is 9.5 cm/min (190 BV/h); pH = 6; A B

Ion exchanger Dynamic capacity up to breakthrough, meqv/g Cu 2+ Pb 2+ Co 2+ Ni 2+ Cd 2+ Zn 2+ FIBAN X-10,771,050,190,280,230,17 ANKB Full dynamic capacities, meqv/g FIBAN X-11,591,790,020,230,300,06 ANKB-350,770,630,230,350,220,27 DYNAMIC CAPACITIES UP TO BREAKTHROUGH (C ME = 0.05 MG/L) AND FULL DYNAMIC CAPACITIES OF ION EXCHANGERS ACCORDING TO HEAVY METAL IONS

PURIFICATION OF WATER FROM LEAD USING 10 CARTRIDGE MADE FROM FIBAN X-1 YARN ParameterUnitValue Temperature 0C0C12-14 pH 8.0 Alcalinitymeqv/l3.7 Calciummg/l59 Magnesiummg/l15 CODmg O/l0.5 Ironmg/l0.11 Zinkμg/l12 Aluminaμg/l9 Silicamg/l4 Leadμg/l19-60 COMPOSITION OF FEED WATER RESULTS OF WATER PURIFICATION AT DIFFERENT FLOW RATES Flow rate, l/h Рb, μg/l Degree of purification, % Feed waterFiltrate ,4 1,793, ,0-28,0 2,6 - 3,785,8- 90, – 3.586, ,62,587,2

BREAKTHROUGH CURVE OF LEAD IONS AT FLOW RATE 1000 ± 50 ltr/h C Pb, μg/l V, m 3 PURIFICATION OF WATER FROM LEAD USING 10 CARTRIDGE MADE FROM FIBAN X-1 YARN Concentration of Pb in feed - 60 μg/l

Based on the results of this study one- and multicartridge filters for water purification from lead were designed. Filters include either disposable ones for domestic application or industrial installations with automatic regeneration with productivity up to 200 m 3 /h. ParameterValue Typical Filtrate Flux Range18-20 m 3 /h Maximum operating pressure8 bar Temperature range +5 … С Fit connection input/output thread 2 /2 or flange Weight (without water, approximately)20 kg Cartridge standard 20 DOE Number of FIBAN X-1cartridges10 Resource before regeneration*1200 m 3 Regenerating solutions basic/secondary 5% HNO 3 / 0.2% NaОН Consumption of regenerating solutions for regeneration 200 l Duration of regeneration2 hours Length diameter mm INDUSTRIAL CARTRIDGE FILTER

WATER PURIFICATION PLANT WITH PRODUCTIVITY 40 m 3 /h

OTHER APPLICATIONS OF FIBAN X-1 drinking and domestic water purification from heavy metal ions removing heavy metal ions: Fe(II), Cu(II), Ni(II), Co(II), Cd(II), Zn(II), Hg(II) - from the technological solutions effective sorption of radionuclide Sr-90 concentrating of the heavy and transition metals from diluted solutions for analysis air purification from the vapor and aerosol impurities of the basic nature (ammonia, organic amines, hydrazine, oxides and metal hydroxides) protection means of the respiratory organs organic catalysis (by complex metal ions)

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