Photocatalytic Cyanide Oxidation from Aqueous Copper Cyanide Solutions over TiO2 and ZnO

2007 ◽  
Vol 53 (1) ◽  
pp. 93-96 ◽  
Author(s):  
JosÉ Peral ◽  
Xavier Domenech
Keyword(s):  
Copper Cyanide ◽  
Cyanide Oxidation ◽  
Cyanide Solutions

Thermodynamic and experimental analysis of copper sulfide precipitation in copper-cyanide solutions

2015 ◽  
Vol 32 (1) ◽  
pp. 22-29
Author(s):  
C. Jimenez-Velasco ◽  
F. Nava-Alonso ◽  
A. Uribe-Salas ◽  
O. Alonso-Gonzalez
Keyword(s):  
Experimental Analysis ◽  
Copper Sulfide ◽  
Copper Cyanide ◽  
Sulfide Precipitation ◽  
Cyanide Solutions

Gold Electroextraction Fundamentals Using Zinc Three-Dimensional Cathode

2018 ◽  
Vol 284 ◽  
pp. 850-855
Author(s):  
K.D. Naumov ◽  
V.G. Lobanov
Keyword(s):  
Three Dimensional ◽  
Cyanide Solution ◽  
Gold Deposition ◽  
Laboratory Studies ◽  
Cyanide Oxidation ◽  
Zinc Powders ◽  
Cyanide Solutions ◽  
Horizontal Arrangement

In the present work, gold electroextraction technological features on three-dimensional cathode are studied. Zinc powders are used as cathode. Similar ones are used to gold cementation from cyanide solutions. The studies object was production of cyanide solution of following composition, mg/dm3: 7 Au. 123.65 Zn, 670 CN-; pH 10.3. Electroextraction laboratory studies were carried out in cylindrical electrolyzer with a horizontal arrangement of current-carrying electrode. It has been found that zinc powders polarization contributes to more complete gold deposition from cyanide solutions. Moreover, it allows to reduce zinc transition into spent solution, as a consequence, zinc consumption reduces. At the same time, under investigated conditions, significant cyanide oxidation does not occur.

scholarly journals The electrochemical oxidation of alkaline copper cyanide solutions

2002 ◽  
Vol 47 (20) ◽  
pp. 3245-3256 ◽  
Author(s):  
S.C Cheng ◽  
M Gattrell ◽  
T Guena ◽  
B MacDougall
Keyword(s):  
Electrochemical Oxidation ◽  
Copper Cyanide ◽  
Cyanide Solutions

Electrowinning of Copper from Copper Cyanide Solutions at Low pH

2019 ◽  
Vol 28 (6) ◽  
pp. 281-294 ◽  
Author(s):  
Xianwen Dai ◽  
Paul L. Breuer ◽  
Matthew I. Jeffrey
Keyword(s):  
Low Ph ◽  
Copper Cyanide ◽  
Cyanide Solutions

Evaluation of Toxicity in Receiving Streams

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2357-2360
Author(s):  
J. Zagorc-Koncan ◽  
M. Dular
Keyword(s):  
Dissolved Oxygen ◽  
Toxic Substances ◽  
Toxicity Evaluation ◽  
Copper Cyanide ◽  
Polluted River ◽  
Design Information ◽  
Point Of Entry ◽  
Receiving Stream ◽  
The Impact

A laboratory river model for the study of self-purification inhibition in a stream containing toxic substances is presented. It enables an engineering - technological prediction of the impact of toxic substances or wastewaters on dissolved oxygen (DO) profile in an organically polluted river downstream from the point of entry of toxic effluent thus providing rapidly and inexpensively significant design information to an environmental scientist or engineer. The method was applied to the toxicity evaluation of wastewaters from electroplating industry. The effects of copper, cyanide (representing two significant constituents of this type of wastewaters) and wastewater from electroplating industry on the biodegradation of organic municipal pollution in receiving stream were evaluated experimentally.

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