Copper solubility

Sauve S., McBride M.B., Norvell W.A., Hendershot W.H. Copper solubility and speciation of in situ contaminated soils Effects of copper level, pH and organic matter. Water Air Soil Pollut 1997 100 133-149. 

Ripley EM, Brophy JG, Li C (2002) Copper solubility in a basaltic melt and sulfide liq-uid/silicate melt partition coefficients of Cu and Fe. Geochim Cosmochim Acta 66 2791-2800 Rosman KJR (1972) A survey of the isotopic and elemental abundances of zinc. Geochim Cosmochim Acta 36 801-819. 

In the hydrometallurgical processes for extracting copper, soluble Cu2+ ions are formed by the action of sulfuric acid on the ores. Then the... 

The model predicts equilibrium concentrations for metals in concentrated electrolyte solutions which are in contact with a precipitated solid phase. An application of the model to a Great Salt Lake brine showed that predicted cadmium, zinc, and copper solubilities were in good agreement with measured dissolved cadmium, zinc, and copper levels in these same brines. Lead was supersaturated with respect to its basic carbonate in the Great Salt Lake brine according to the model prediction. 

Copper polish slurry formations may contain dissolved NH, ig) to complex the copper ions and increase copper solubility. In 1 vol% NH4OH, for example, Cu ions are complexed by NHj according to ... 

Properties Hard, brown leaflets. Contains approximately 74% mercury and approximately 24% copper. Soluble in nitric acid. 

RoEmkens, P.E.A.M., Bouwman, L.A., Boon, G.T., 1999. Effect of plant growth on copper solubility and fractionation in soil solution samples. Environ. Pollut. 106, 315-321. 

From the expression for Cumax it can be seen that the copper solubility is strongly dependent on the water quality. For other materials there will be different relationships with water quality. Therefore it is necessary to test the metal release by materials in water of different qualities. 

For copper, the rig tests are applied at pumping stations where the water has a high copper solubility. For lead, the rigs are plaeed at the majority of the pumping stations that deliver water to areas with lead pipes. The results from the pipe rig test show a good correlation with metal concentrations at the tap. The Netherlands government has accepted the pipe rig test for compliance monitoring. 

Degrades In the presence of light and heat. Plasticizer is lost causing shrinkage and distortion. CA has poor chemical resistance and is attacked by acids and concentrated alkalis producing corrosive acetic acid, which promotes autocatalysis. Hydrolytic breakdown accelerated by metals, particularly copper. Soluble in ketones and chlorinated solvents. 

Rol] Optical microscopy, copper solubility in Fc-Ni alloys Cooled fiom the liquid state, <35 mass% Ni, < 25 mass% Cu... 

Ost] investigated the copper solubility in ferrite and eutectoid cementite of gray iron and consfructed the curves of the distribution copper in these phases. 

Sulfuric acid makes copper soluble and holds copper sulfate in solution. 

Reduced chalcogens. Sulfane (H2S) and precipitate, from shghtly acidic or alkahne solutions, CdS, yellow, insoluble in excess reagent, in NH3 or in CN (distinction from copper) soluble in 2-M HNO3, hot 3 to 4-M H2SO4, and in saturated NaCl (distinction from copper). 

A fossil fuel is used as an energy source for heating/sustaining typical flash temperatures above 1400 °C. Oxygen-enriched air is also employed for reaction with the copper concentrate. Matte and slag are formed, with the addition of fluxes to aid separation and to minimize copper solubility in the slag, which is later treated for copper recovery (Table I) [6]. The flue gas from the flash furnace is typically processed in a sulfuric acid plant. 

A study of copper. solubility and the stability of carbonate and formate solutions was made by Pavlov and Lopatin (1947). These authors found the maximum possible concentration of copper to be 160 g/liter in carbonate solutions and about 210 g/liter in formate solutions. However, these values require uneconomically high ammonia concentrations. They recommend concentrations within the ranges given in Table 16-21. The lower portions of the ranges are preferred to minimize ammonia loss. 

---