MEMBRANE EXTRACTION OF SILVER BY DI(2-ETHYLHEXYL)DITHIOPHOSPHORIC ACID

被引：40

作者：

BROMBERG, L ^{[1
]}

LEWIN, I ^{[1
]}

WARSHAWSKY, A ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT ORGAN CHEM,IL-76100 REHOVOT,ISRAEL

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 70卷 / 01期

关键词：

MEMBRANE EXTRACTION; SUPPORTED LIQUID MEMBRANES; WASTE-WATER TREATMENT; CARRIER; DI(2-ETHYLHEXYL)DITHIOPHOSPHORIC ACID;

D O I：

10.1016/0376-7388(92)80077-W

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A membrane-based process for silver recovery from waste solutions was derived. Silver diffused from the feed solution through the supported liquid membrane containing di(2-ethylhexyl)dithiophosphoric acid (DTPA) as a carrier into the receiver solution, which contained thiourea at a low pH. Silver transfer rate and diffusion coefficient in the membrane were found to be up to 1.5 X 10(-9) mol/cm2-sec and 2 X 10(-6) cm2/sec, respectively. The membranes used demonstrated an ability to work in contact with waste solutions from silver reclamation eluants until silver had been transferred even against a very high concentration gradient. The dependencies of silver transfer rate on such factors as pH in the receiver and feed phases, DTPA and thiourea concentrations, were investigated.

引用

页码：31 / 39

页数：9

共 30 条

[1] DESIGN AND DEVELOPMENT OF POLYMER-BASED SEPARATIONS - DUAL MECHANISM BIFUNCTIONAL POLYMERS AS A NEW CATEGORY OF METAL-ION COMPLEXING AGENTS WITH ENHANCED IONIC RECOGNITION [J].

ALEXANDRATOS, SD .

SEPARATION AND PURIFICATION METHODS, 1988, 17 (01) :67-102

[2]

BELLOMO A, 1971, 2ND C APPL PHYS CHEM, V1, P173

[3] A NOVEL TETRADENTATE HYDROXAMATE AS ION CARRIER IN LIQUID MEMBRANES [J].

BROMBERG, L ;

LEVIN, G ;

LIBMAN, J ;

SHANZER, A .

JOURNAL OF MEMBRANE SCIENCE, 1992, 69 (1-2) :143-153

[4]

BROMBERG L, UNPUB HYDROMETALLURG

[5]

BROMBERG L, UNPUB INORG CHIM ACT

[6] MASS-TRANSFER RATE THROUGH SOLID SUPPORTED LIQUID MEMBRANES - INFLUENCE OF CARRIER DIMERIZATION AND FEED METAL CONCENTRATION ON MEMBRANE-PERMEABILITY [J].

CHIARIZIA, R ;

CASTAGNOLA, A ;

DANESI, PR ;

HORWITZ, EP .

JOURNAL OF MEMBRANE SCIENCE, 1983, 14 (01) :1-11

[7]

CONNORS KA, 1987, BINDING CONSTANTS ME, P226

[8]

CUSSLER EL, 1984, MASS TRANSFER FLUID, P147

[9] SEPARATION OF METAL SPECIES BY SUPPORTED LIQUID MEMBRANES [J].

DANESI, PR .

SEPARATION SCIENCE AND TECHNOLOGY, 1984, 19 (11-1) :857-894

[10] MASS-TRANSFER RATE THROUGH LIQUID MEMBRANES - INTERFACIAL CHEMICAL-REACTIONS AND DIFFUSION AS SIMULTANEOUS PERMEABILITY CONTROLLING FACTORS [J].

DANESI, PR ;

HORWITZ, EP ;

VANDEGRIFT, GF ;

CHIARIZIA, R .

SEPARATION SCIENCE AND TECHNOLOGY, 1981, 16 (02) :201-211

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