THE MECHANISM OF ADSORPTION OF AUROCYANIDE ONTO ACTIVATED CARBON .1. RELATION BETWEEN THE EFFECTS OF OXYGEN AND IONIC-STRENGTH

被引：49

作者：

ADAMS, MD

机构：

[1] Council for Mineral Technology, Randburg, 2125

来源：

HYDROMETALLURGY | 1990年 / 25卷 / 02期

关键词：

D O I：

10.1016/0304-386X(90)90037-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The poor agreement between different workers regarding the exact mechanism involved in the adsorption of aurocyanide onto activated carbon is shown to be due to differences in the experimental conditions they employed. The effects of oxygen and ionic strength are shown to be interrelated. Adsorption under conditions of high ionic strength, as found in gold plants, involves an ion-pair mechanism whereas, under conditions of low ionic strength, a portion of the gold is adsorbed by electrostatic interacyion with ion-exchange sites formed through oxidation of the carbon surface by molecular oxygen. © 1990.

引用

页码：171 / 184

页数：14

共 33 条

[11]

COOK R, 1986, THESIS U LONDON LOND

[12]

DIXON S, 1978, AICHE S SERIES, V174, P75

[13]

FRUMKIN A, 1931, Z PHYS CHEM A LPZ, V157, P422

[14]

Garten V.A, 1957, REV PURE APPL CHEM, V7, P69

[15]

HUGHES HC, 1985, S SER AUST I MIN MET, V39, P151

[16] INVESTIGATIONS OF THE ELECTROCHEMICAL PROPERTIES OF ACTIVATED CARBON AND CARBON-BLACK [J].

JANKOWSKA, H ;

NEFFE, S ;

SWIATKOWSKI, A .

ELECTROCHIMICA ACTA, 1981, 26 (12) :1861-1866

[17]

JONES WG, 1989, GOLD FORUM ON TECHNOLOGY AND PRACTICES - WORLD GOLD 89, P278

[18] ACID-INDUCED OLIGOMERIZATION OF AUROCYANIDE ADSORBED ON CARBON [J].

KLAUBER, C .

SURFACE SCIENCE, 1988, 203 (1-2) :118-128

[19]

KONSHITA K, 1973, CARBON, V11, P403

[20]

LABROOY SR, 1988, 1ST P INT C HYDR, P466

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