copper sulfide representative

Copper Sulfide Mining

These mines provided a representative view of the types of environmental impacts resulting from the development of copper sulfide deposits, focusing on pipeline spills, tailings failures and water collection and treatment failures. All of the mines () experienced pipeline spills or other accidental releases.

Biofilm Formation Is Crucial for Efficient Copper Bioleaching …

For low-grade primary copper sulfide ores, a few industrial bioleaching applications are in the advanced stages to make the copper extraction economically feasible, to some extent, because of our inability to capture the lifestyle and growth development of the leaching microorganisms during copper recovery from actual primary …

Enhancing zerovalent iron-based Fenton-like chemistry by copper sulfide …

In this study, copper sulfide (CuS) was found to effectively enhance the degradation of diverse organic pollutants in the ZVI/H 2 O 2 system. Moreover, the degradation performance for the actual industrial wastewater (i.e., dinitrodiazophenol wastewater) in the ZVI/H 2 O 2 system was impressively improved by 41% with CuS …

Cadmium Sulfide (CdS) is a compound semiconductor

Question: Cadmium Sulfide (CdS) is a compound semiconductor that crystallizes in wurtzite structure under equilibrium conditions, which is based on also the "tetrahedral" bonding configuration we have discussed in class.a) Sketch the 2D representative bonding model for CdS (atoms represented as circles and covalent bonds as straight …

Copper sulfide nanostructures: synthesis and biological …

2.1. Copper sulfide nanospheres and nanocages. Copper sulfide nanospheres have been successfully synthesized via hydrothermal, solvothermal, combustion, microwave, gas phase, sol–gel, and sonochemical methods. 17–20 Although each of these processes has its own advantages, the hydrothermal method is the …

Copper sulfide nanostructures: synthesis and biological …

Copper sulfide nanospheres have been successfully synthesized via hydrothermal, solvothermal, combustion, microwave, gas phase, sol–gel, and sonochemical methods. 17–20 Although each of these processes has its own advantages, the hydrothermal method is the preferred one owing to the ready availability of water, the low cost, and the ...

Copper II Sulfide Facts, Formula, Properties, Uses

Copper ii sulfide or cupric sulfide represented by the chemical formula CuS that bears the IUPAC name sulfanylidenecopper [1] is a black powder or lumps that is soluble in nitric acid but insoluble in water [3]. It occurs as the mineral covellite and is an ionic compound [3, 4].It is stable in air when it is dry but gets oxidized to copper sulfate by moisture in the air [1].

Copper(II) sulfide | CuS | CID 14831

Modify: . Description. Covellite is a mineral with formula of Cu 1+ S or CuS. The IMA symbol is Cv. RRUFF Project. Copper (II) sulfide is a chemical compound of copper and sulfur. It occurs in nature as the mineral covellite. Copper is a chemical element with the symbol Cu and atomic number 29.

Copper sulfide nanoparticles as high …

Copper (I) sulfide NPs were synthesized using a previously reported method 53. Copper (I) acetate (48 mg), TOPO (1 g) and octadecene (30 ml) were mixed in a three-neck flask, degassed under …

Sulfur-Modified Copper Catalysts for the …

Carbon-supported copper sulfide catalysts were prepared by wet chemistry under He atmosphere. ... (Figure 5; also SI Figure S7) for representative samples with sulfur contents of 0.45 at% and 58.9 at%, …

Natural formation of copper sulfide nanoparticles via …

A representative metabolite of reduced organic sulfur is cysteine (Cys), ... Cell-associated copper sulfide nanoparticles formed after 48 h of incubation of the Bacillus sp. TR1 isolated from paddy soil in MSM medium supplemented with cysteine and Cu. (b) Energy dispersive X-ray spectra (EDS) obtained from the cell-associated nanoparticles. ...

Homogeneous Catalytic Dissolution of Recalcitrant …

According to the chemical formula, chalcopyrite is an iron copper sulfide (CuFeS 2) with the theoretical combination of 34.6% Cu, 30.5% Fe, and 34.9% S (wt%). ... Table 1 shows the XRF and mineralogical analysis of the representative concentrate. Indeed, XRF analysis accurately determined the chemical values of the elements in the …

Copper Sulfide

All copper sulfides require the presence of Fe 3+ and O 2 as oxidizing agents for leaching to occur. The copper sulfide is oxidized by Fe 3+.The resulting Fe 2+ is reoxidized to Fe 3+ by O 2.The Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product …

Prove It First Law

Copper-sulfide mining is the greatest threat to Minnesota's clean water in decades. Before a copper-sulfide mine in Minnesota could be permitted, the Prove It First Law would require independent scientific proof that a copper-sulfide mine has operated elsewhere in the United States for at least ten years without causing pollution and that the ...

Reversible Copper Sulfide Conversion in …

Representative Na + cation solvated species in the diluted (1 m) and concentrated ... In the first 50 cycles, the characteristic features of copper sulfide entirely disappear in 3.3 m NaFSI-PC and 3.3 m NaFSI …

Copper (I) sulfide: A two-dimensional …

Abstract. Twodimensional (2D) semiconductor with suitable direct band gap, high carrier mobility, and. excellent openair stability is especially desirable for material applications. …

Copper Sulfide

The common route for turning copper sulfide ores into metal is high temperature oxidation of sulfides to produce an impure liquid copper that is cast into slab-like anodes. Principal …

Copper Tubing Evaluation in A Natural Gas Environment

criteria shown in Section 2.5 would determine suitability for use of copper tubing in gas stream having similar chemistry. 2.0 SCOPE OF WORK 2.1. Design and Set-up of Copper Tubing Test Rack Assembly The copper tubing test rack assembly was designed to simulate flow conditions that are representative of a typical full-scale residential house …

Copper sulfide nanoparticles as a photothermal switch for …

Here we show that coupling of copper sulfide (CuS) nanoparticles to antibodies targeting TRPV1 act as a photothermal switch for TRPV1 signaling in vascular smooth muscle cells (VSMCs) using near-infrared light. Upon irradiation, ... a Representative TEM images of VSMCs incubated with 0.4 mg mL −1 of CuS-TRPV1 or …

Copper Sulfide Nanoparticles as a New Class of …

Copper Sulfide Nanoparticles as a New Class of Photoacoustic Contrast Agent for Deep Tissue Imaging at 1064-nm. ... Representative in vivo PAT images of a mouse brain. Images were acquired using laser light (A) at a wavelength of 532 nm without contrast agent, (B) at 1064 nm 24 h after intracranial injection of 15 μl of CuS NP …

(a-h) Crystal structures of some representative …

(a-h) Crystal structures of some representative copper sulfide phases. Each crystal phase is shown by its mineral name and composition. Blue and yellow spheres represent …

Boundary Waters Permanent Protection Bill introduced in …

Ely, MN-- This week, the Boundary Waters Permanent Protection Bill (S.F. 167/H.F. 329) was introduced in both the Minnesota House and Senate by chief authors Representative Sandra Feist and Senator Kelly Morrison.The bill extends the existing permanent state ban on mining in the Boundary Waters Canoe Area Wilderness …

Copper Systematics in Arc Magmas and Implications for …

One element that may provide insight into the entire redox history of magmas is copper (Cu). In the range of oxygen fugacities (fO 2) typical of most igneous rocks, the valence state of Cu remains +1.However, its solid/melt partitioning behavior depends on the speciation of sulfur (S) (11, 12), which itself is redox-sensitive.At fO 2 values of ΔFMQ = …

Synthesis and tribological property study of oleic acid-modified copper

Oleic acid-modified copper sulfide nanoparticles were prepared by means of a surface modification technique in absolute alcohol–distilled water mixed solution. Through varying the mole ratio of surface modifier to copper sulfide, a series of nanoparticles were prepared with the mole ratio of 0.5:1, 1:1, 2:1, 3:1.

Sulfide Minerals

The sulfide minerals represent higher temperatures and a slightly deeper setting than the sulfate minerals, which reflect the oxygen-rich environment near the Earth's surface. Sulfides occur as primary …

Three-Fold Coordination of Copper in Sulfides: A …

By precession-assisted 3D electron diffraction analysis, we find very high anisotropic thermal vibration of copper attributed to its 3-fold coordination, with an …

Copper sulfide nanostructures: synthesis and …

Synthetic methods for the production of copper sulfide nanoparticles. This review article includes a study of a wide range of nanostructures, including 3D nanomaterials, 2D nanoplates and nanofilms, and 1D …

Cuprous or cupric? How substrate polarity can select for …

Copper sulfide is a low-cost, environmental-friendly semiconductor that has many applications due to its non-toxic properties 1–3 and abundance. 1,4,5 Applications of copper sulfide include in thermoelectrics, 1,5 solar cells, 6,7 energy storage, 8,9 photocatalysis, 10 biotechnology, 11–13 and nanoelectronics. 14,15 One important …

Leaching analysis of copper and cobalt from sulfide ores in …

The ANOVA indicates that the quadratic model is representative and the R 2 value of 0.92 is valid. ... it is well known that chalcopyrite and other copper sulfide minerals such as enargite are ...

Sulfide mineral | Definition, Examples, Identification, & Facts

sulfide mineral, any member of a group of compounds of sulfur with one or more metals. Most of the sulfides are simple structurally, exhibit high symmetry in their crystal forms, and have many of the properties of metals, including metallic lustre and electrical conductivity. They often are strikingly coloured and have a low hardness and a high ...