TECHNOLOGIES & APPLICATIONS

HIGH-DYNAMIC ION-EXCHANGEABLE FILTERS BASED ON POLYPROPYLENE NONWOVEN FABRIC

Filters obtained by exposure of fibrous ion-exchangeable materials (MFIE) based on textile and nonwoven products made of industrial isotactic polypropylene to radiation-chemical action were developed at the Institute of High Current Electronics, Siberian Branch of Russian Academy of Sciences, jointly with Scientific-Technical Center of Tomsk Petrochemical Complex and with the participation of Siberian Chemical Complex and Tomsk Atomic Center. Material beaming at a pulsed nanosecond lower-power electron accelerator is followed with chemical inoculation of monomers, e.g., acrylic acid. Ion-exchangeable filters of this kind may be applied specifically for sewage treatment from heavy-metal ions.

Unlike the filters made of K-2-type granulated resins, they have higher (10-20 times) dynamic rate of exchange and extended exchange capacity (up to 6-7 mg- equi/g of material) as well as filtration selectivity.

Electron Accelerator Parameters:
1.	Mains supply	380 V/3 F
2.	All-mains power consumption	3–5 Kw
3.	Electron energy	up to 250 keV
4.	Pulse width	10 ns
5.	Pulse repetition rate	up to 100 Hz
6.	Output beam average power	up to 3.0 kW
7.	Computer control
8.	Local biological shielding

Through a foil window, an e-beam from the accelerator diode is injected into an airproof working chamber with gaseous medium of necessary oxygen pressure and content. After exposure of MFIE tape sample placed in the chamber to a necessary dose the material is withdrawn and undergone to the aforesaid chemical inoculation. The temperature in the chamber corresponds to the room temperature.

Filter-making productivity is determined by the Customer's requirement.

For further information please contact:

Pavel I. ALEXEENKO
Leading Constructor

Phone: (3822) 49-14-76
Fax: (3822) 49-24-10
E-mail: api@lfe.hcei.tsc.ru

Vladislav V. ROSTOV
Dr. Sci. (Phys. & Math.), Department Head

Phone: (3822) 49-16-41
Fax: (3822) 49-21-34
E-mail: rostov@lfe.hcei.tsc.ru

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