copper-nickel
Investigation of possibility of recovery nonferrous metals and producing building materials from copper-nickel smelterslag
... Abstract. Pelletized slag of copper-nickel smelter ("Pechenganikel" combine, "Kola MMC" JSC) has been investigated as a potential technogenic deposit. It has been shown that nonferrous ...
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Determination of Cu, Ni and Pb in Aqueous Medium by FAAS after Pre-Concentration on 2-Aminothiazole Modified Silica Gel
... for copper, nickel and lead determination at trace levels in aqueous ...on-line copper, nickel and lead determination by FAAS of natural water samples, however, requires a previous sample ...
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Assessment of trace metals in Amazonian fish exposed to untreated urban sewage: high chromium concentrations in fish tissues
... of copper, nickel, lead, zinc, mercury and chromium in muscle tissue of fish from the Madeira River Basin; ii) to verify if the values are in agreement with those established by ANVISA regarding food and ...
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Refinement and fracture mechanisms of as-cast QT700-6 alloy by alloying method
... of copper, nickel, niobium and stannum elements by alloying method in a medium frequency induction furnace, aiming at improving its strength and ...of copper and nickel elements contributed to ...
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Braz. j. oceanogr. vol.57 número3
... cadmium, copper, nickel, manganese and lead levels were made in tissues of green turtles (Chelonia mydas) that feed in Cananéia estuary, Brazil, where local pollution by heavy metals is presumably ...
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Role of estuarine natural flocculation process in removal of Cu, Mn, Ni, Pb and Zn
... size 0.45 µm) was used to collect the flocculants of the samples. Then, the membrane ilters were transferred into beakers and digested by adding 5 mL concentrated nitric acid in each beaker. The concentrations of ...
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Evaluation of Sinos River water genotoxicity using the comet assay in fish
... The Sinos River, in southern Brazil, is polluted by industrial discharges and untreated urban wastes. Fish genotoxicity biomarkers are valuable parameters for environmental risk assessment. In this study, we used the ...
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Essays in applied econometrics
... First, we analyze the pairwise behavior of metal commodity prices alone, asking whether they share common trends and/or common cycles. Results are presented in Ta- ble 1. Regarding cointegration, we find overwhelming ...
128
Braz. J. Chem. Eng. vol.31 número4
... Abstract - The bentonitic clays show good adsorptive characteristics, being used as alternative material for removing metals. This study evaluates several treatments (calcination, acid activation and treatment with ...
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EVALUATION OF COPPER RESISTANT BACTERIA FROM VINEYARD SOILS AND MINING WASTE FOR COPPER BIOSORPTION
... technologies. Copper resistant microorganisms with the capacity to adsorb copper on biomass can be used as bioremediation tools to remove copper from contaminated terrestrial and aquatic environments ...
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Rodrigo Cortes dos Santos
... Since copper belongs to group 11 of the periodic table, this means it has certain attributes: it has one s-orbital electron on top of a filled d-electron shell and is characterized by high ductility and electrical ...
56
J. Braz. Chem. Soc. vol.23 número1
... The images shown in Figures 1-3 reveal that the copper deposition process affects strongly the electrode surface morphology. In order to evaluate whether there is a correlation between surface morphology and the ...
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Condições sanguíneas e gengivais em pacientes alérgicos ao níquel submetidos a tratamento ortodôntico com braquetes convencionais e níquel free
... that nickel can influence local and systemic inflammatory reactions throughout orthodontic ...[26] Nickel seems to adhere to endogenous macromolecules, thereby stimulating the proliferation of monocytes, ...
122
Bioleaching of gold, copper and nickel from waste cellular phone PCBs and computer goldfinger motherboards by two Aspergillus niger strains
... tion in the solution is significantly increased by an Fe- enriched culture medium (Choi et al., 2004). Pham and Ting (2009) showed that applying a bio-oxidation pretreat- ment with A. ferrooxidans to electronic wastes ...
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Nickel-metal hydride batteries, an alternative for the nickel-cadmium batteries.
... THE NICKEL-CADMIUM BATTERIES. Nickel metal hydride (Ni-MH) batteries have emerged as an alternative for replacement of nickel-cadmium batteries, because of their more environmental compatibility and ...
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Effect of trace elements on the interface reactions between two lead-free solders and copper or nickel substrates
... Concerning the solder/substrate reaction an important effect was detected, with the formation of a single IMC, for the reaction between the Sn-Zn alloys and the copper substrate. P was not detected in the IML. ...
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Predicting Soluble Nickel in Soils Using Soil Properties and Total Nickel.
... multiple regressions to predict soil soluble Ni concentrations in 17 typical Chinese soils with a wide range of soil properties and total metal concentrations; and (iii) attempt to apply[r] ...
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Oreganum vulgare Linn. leaf: An Extensive Pharmacognostical and Phytochemical Quality Assessment
... The trace elements were found to be copper, lead, cadmium, zinc, cobalt, manganese, nickel and copper in ethanol extract and phytochemical screening of aqueous and ethan[r] ...
5
Synthesis, characterization and thermal behaviour of solid state compounds of 4-methoxybenzoate with Manganese, Nickel and Copper
... Copper compound. The TG-DTA curves are shown in Fig.4. The first mass loss observed between 70 and 120ºC, corresponding to the endothermic peak is due to dehydration water with loss of 3 H 2 O (Calcd. 12.87%; TG = ...
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Balanços metabólicos do enxofre em pacientes com leucodistrofia metacromática.
... In Wilson's disease, likewise, copper absorption is raised, a copper oxidase (ce- rulplasmin) is lacking, copper accumulates in the body tissues, cupriuresis is high, and the blood ser[r] ...
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