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"" (), . , , . - () . : , , -, , . The ion selective properties of metal ceramic membranes "Trumem" (MCM), produced on the basis of ultrafiltrational MCM by a method of electro-precipitation, were investigated. It was shown, that the method of electro-precipitation allows to obtain defects free membranes with ion selective properties. The MCM modification by -aminopropyltryethoxysilane (-APTES) allows to obtain the membranes with hydrolytically stable selective layers and to increase the MCM selective properties. Key words: membrane, nanofiltration, -APTES, modification, selectivity.

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"-", ) Na+, K+, Cl-, Cs+, Li+, Mg2+. 3 %. D.=10 , 0,01 l. 1-1(KCl), 1-2(Na2SO4), 21(MgCl2), 2-2(CuSO4) .

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1. (D.= 10 ) (=5 )
* 1-1, % 2-1, % 1-2, % 2-2, % Q0, 3/2·

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28 25 20

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30
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. 1. (D.=10 ) pH (1-Na2SO4; 2-KCl; 3 MgCl2)

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2. (D.= 5 ) (=5 )
1-1, % 25 2-1, % 8 1-2, % 61 2-2, % 20 Q0, 3/2· 0,02

(1-2>1-1>2-2>2-1) , . , 1-1 , D.=10 ,

, . D.=3 . 3.

3. - (=5 )
D.=3 : D
.=10

1-1, % 28 58 0 31

2-1, % 12 79 20 7

1-2, % 61 19 0 51

2-2, % 24 39 0 20

Q0, 3/2· 0,04 0,02 0,34 0,11

. . . .

:

D.=5 , . , : 1-2>1-1>2-2>2-1. , . : s+ 35 %, + 28 %, Na+ 20%, Li+ 18 %. (Cs+)>(K+)>(Na+)>(Li+) [4]. D.=3 D.=5 , , 0,01 l.
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35 30 25 20
, %

1 2 3

15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
,

. 2. (D.=5 ) KCl (I=0,01 M) pH (1 pH 9; 2 pH 3; 3 pH 6)

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- . . 3 . , 2-3 . (1-1), (2-1) (22). : 2-1>1-1>2-2>1-2, . . , - : (CsCl)(KCl)(NaCl)(LiCl) 60%. . 3.
100 90 80 70 60
, %

1 2 3

50 40 30 20 10 0 0 1 2 3 4 5 pH 6 7 8 9

. 3. pH (1Na2SO4; 2-KCl; 3 MgCl2)

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. 0,01 Cl 20° 100°. 2 10 l. [3], . >7 - . <7 + NH3+ . KCl , (~7) : + Cl- . MgCl2 , .. Cl-, , . Na2SO4: Na+, , , , , . "" . . , . , . 7

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4. 1. , . 2. .
1. Berezkin V.V., Nechaev A.N., Mchedlishvili B.V. The track membranes as a model porous system for the investigation of the polycomponent electrolyte solutions separation // Radiat. Meas. 1995. V. 25. N. 1-4, p.703.

2. .. Trumem Rusmem, // . . . 2001. 9, . 2027. 3. .., .., .. . .: "", 1991. 4. .., .., .., .. // . 1980. T. 2. 2, . 99-104. 5. .., .. . .: , 1986. 190 . 6. .., .., .. , // . . 1980. . 42, . 223-229. 7. .., .., .. - // . . . 2. . 1983. 5, . 509-511.

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