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Leaching of Cadmium, Tellurium and Copper from Cadmium ...

Leaching of Cadmium, Tellurium and Copper from Cadmium Telluride Photovoltaic Modules Progress Report February 3, 2004 W. Wang and V.M. Fthenakis National Photovoltaic EHS Assistance Center Environmental Sciences Department Brookhaven National laboratory Upton NY 11973 Brookhaven National Laboratory Upton, New York 11973-5000 Under Contract

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LEACHING OF CADMIUM, TELLURIUM AND COPPER FROM

Separating the metals from the Limestone is the first step in recycling end-of-life cadmium telluride photovoltaic modules and manufacturing scrap. We accomplished this by leaching the metals in solutions of various concentrations of acids and hydrogen peroxide. A

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Extraction and separation of Cd and Te from cadmium ...

The extraction and separation of cadmium, tellurium, and copper from CdTe PV module scrap was investigated. Several leaching technologies were assessed and the extraction of CdTe from samples of PV modules was optimized for maximum efficiency and minimum cost.

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System and method for separating tellurium from cadmium ...

The cadmium and the tellurium can be extracted from the fragments at ambient temperature. The leaching agent can have a pH of less than 6 and can include a sulfuric acid. The concentration of the sulfuric acid can be at least 0.5 M. The

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Leaching of cadmium and tellurium from cadmium telluride ...

15/08/2017  Leaching of cadmium and tellurium from cadmium telluride (CdTe) thin-film solar panels under simulated landfill conditions. Ramos-Ruiz A(1), Wilkening JV(1), Field JA(1), Sierra-Alvarez R(2). Author information: (1)Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA. (2)Department of

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Extraction and separation of Cd and Te from cadmium ...

leaching 4–6; and (4) leaching with sulfuric acid/hydrogen peroxide.7–9 The first method failed to separate Cd from Fe (tellurium was not leached into solution). Oxygen-pressure leaching separated them to a significant degree, but the residues contained 4–7% of cadmium mixed with tellurium and sulfur. Further, due to the high

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Leaching of Cadmium, Tellurium and Copper from Cadmium ...

Leaching of Cadmium, Tellurium and Copper from Cadmium Telluride Photovoltaic Modules Progress Report February 3, 2004 W. Wang and V.M. Fthenakis National Photovoltaic EHS Assistance Center Environmental Sciences Department Brookhaven National laboratory Upton NY 11973 Brookhaven National Laboratory Upton, New York 11973-5000 Under Contract No. DE-AC02

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Leaching of cadmium and tellurium from cadmium telluride ...

15/08/2017  A crushed non-encapsulated CdTe thin-film solar cell was subjected to two standardized batch leaching tests (i.e., Toxicity Characteristic Leaching Procedure (TCLP) and California Waste Extraction Test (WET)) and to a continuous-flow column test to assess cadmium (Cd) and tellurium (Te) dissolution under conditions simulating the acidic- and the methanogenic phases of municipal solid

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Extraction and separation of Cd and Te from cadmium ...

01/06/2006  The extraction and separation of cadmium, tellurium, and copper from CdTe PV module scrap was investigated. Several leaching technologies were assessed and the extraction of CdTe from samples of PV modules was optimized for maximum efficiency and minimum cost. A dilute aqueous solution of hydrogen peroxide and sulfuric acid was sufficient to completely leach out cadmium and tellurium

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Leaching of cadmium and tellurium from cadmium telluride ...

15/08/2017  Leaching of cadmium and tellurium from cadmium telluride (CdTe) thin-film solar panels under simulated landfill conditions. Ramos-Ruiz A(1), Wilkening JV(1), Field JA(1), Sierra-Alvarez R(2). Author information: (1)Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA. (2)Department of Chemical and

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Assessing metal leaching from PV modules dumped in ...

04/12/2019  In CdtE modules, copper, tellurium and cadmium had the largest concentration of metals. “Cd [cadmium] and Cu [copper] have been shown to be highly toxic for aquatic organisms,” states the ...

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Leaching of cadmium and tellurium from cadmium telluride ...

Leaching of cadmium and tellurium from cadmium telluride (CdTe) thin-film solar panels under simulated landfill conditions Author: Ramos-Ruiz, Adriana, Wilkening, Jean V., Field, James A., Sierra-Alvarez, Reyes Source: Journal of hazardous materials 2017 v.336 pp. 57-64 ISSN: 0304-3894 Subject: United States Environmental Protection Agency, cadmium, drinking water, landfills, leachates ...

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Cadmium telluride - Wikipedia

Cadmium telluride (CdTe) is a stable crystalline compound formed from cadmium and tellurium. It is mainly used as the semiconducting material in cadmium telluride photovoltaics and an infrared optical window. It is usually sandwiched with cadmium sulfide to form a p–n junction solar PV cell. Typically, CdTe PV cells use a n-i-p structure.

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CiteSeerX — RECYCLING OF CdTe PHOTOVOLTAIC MODULES ...

Low concentration sulfuric acid solutions were effective in totally leaching cadmium and tellurium out of the Limestone matrix. We used ion exchange columns in series to separate copper and tellurium from cadmium in solution. Subsequently, we recovered Cd and Te from the corresponding solutions with electrowinning and reactive precipitation respectively. Electrowinning produced cadmium sheets of ...

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Dissolution kinetics of tellurium from gold concentrate ...

The cadmium telluride ... refining of blister copper, and the remainder as a by-product of bismuth and lead processing (Makuei and Senanayake, 2018). Due to heavy losses of tellurium during mineral processing and smelting, the current routes for tellurium production as a metallurgical by-product cannot meet the demand. Therefore, the direct recovery of tellurium from tellurium-bearing ores has ...

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Cadmium and its compounds - Substances restricted under ...

Consists primarily of cadmium, cobalt, copper, lead, manganese, nickel, thallium, tin and zinc. 293-311-8 : 91053-46-2 : Expert judgement : Fatty acids, castor-oil, hydrogenated, cadmium salts: 294-296-0 : 91697-35-7 : Expert judgement : Fatty acids, C8-10-branched, cadmium salts: 296-092-7 : 92257-06-2 : Expert judgement : Leach residues, zinc refining flue dust, cadmium-thallium ppt. Sponge ...

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(PDF) Tellurium; Supply and Applications

Tellurium production is limited mainly to that obtained from the treatment of electrolyte muds from copper refineries. However, there are several other sources from which the precious metal ...

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Leaching of cadmium and tellurium from cadmium telluride ...

Leaching of cadmium and tellurium from cadmium telluride (CdTe) thin-film solar panels under simulated landfill conditions Author: Ramos-Ruiz, Adriana, Wilkening, Jean V., Field, James A., Sierra-Alvarez, Reyes Source: Journal of hazardous materials 2017 v.336 pp. 57-64 ISSN: 0304-3894 Subject: United States Environmental Protection Agency, cadmium, drinking water,

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CiteSeerX — RECYCLING OF CdTe PHOTOVOLTAIC MODULES ...

Low concentration sulfuric acid solutions were effective in totally leaching cadmium and tellurium out of the Limestone matrix. We used ion exchange columns in series to separate copper and tellurium from cadmium in solution. Subsequently, we recovered Cd and Te from the corresponding solutions with electrowinning and reactive precipitation respectively. Electrowinning produced cadmium

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Cadmium telluride photovoltaics - Wikipedia

Cadmium telluride (CdTe) photovoltaics describes a photovoltaic (PV) technology that is based on the use of cadmium telluride in a thin semiconductor layer designed to absorb and convert sunlight into electricity. Cadmium telluride PV is the only thin film technology with lower costs than conventional solar cells made of crystalline silicon in multi-kilowatt systems.

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The polarographic determination of copper, cadmium ...

The polarographic determination of copper, cadmium, thallium, lead, tellurium and iron in selenium . E. L. Bush Abstract. The first page of this article is displayed as the abstract. ...

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Dissolution kinetics of tellurium from gold concentrate ...

The cadmium telluride ... refining of blister copper, and the remainder as a by-product of bismuth and lead processing (Makuei and Senanayake, 2018). Due to heavy losses of tellurium during mineral processing and smelting, the current routes for tellurium production as a metallurgical by-product cannot meet the demand. Therefore, the direct recovery of tellurium from tellurium

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SU1241998A3 - Method of extracting zinc,copper and cadmium ...

1464447 Recovering zinc, copper and cadmium; jarosites OUTOKUMPU OY 11 Feb 1974 [12 Feb 1973] 6077/74 Heading C1A Zinc calcine is subjected to "neutral leaching" with a deficiency of sulphuric acid to dissolve substantially all non-ferrous metal oxides and leave ferrites; the solution is separated and Zn, Cu and Cd are recovered therefrom; the residue is treated at

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The perculiarities of tellurium behaviour in the process ...

Oxidative pressure leaching of the material for 1 hour at 105–120 oС, 0.1–0.3 MPa oxygen partial pressure, S:L = 5–6, and ~100 g/dm3 solution initial acidity ensures extraction in the solution about 95–98% of copper and 40–65% of tellurium. The tellurium extraction depends on mass exchange conditions, and is independent of the temperature and oxygen partial pressure. The

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The Life Cycle of Copper, its Co-Products and By-Products

THE LIFE CYCLE OF COPPER, ITS CO-PRODUCTS AND BYPRODUCTS Robert U. Ayres and Leslie W. Ayres Center for the Management of Environmental Resources INSEAD, Boulevard de Constance F-77305 Fontainebleau Cedex France and Ingrid Råde Physical Resource Theory Department School of Physics Chalmers University of Technology Gothenburg Sweden With

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Optimized Leaching Conditions for Selenium from Sar ...

Optimized Leaching Conditions for Selenium from Sar-Cheshmeh Copper Anode Slimes Abdollahy, ... cadmium, cobalt and manganese. In the periodic table, selenium is located between sulphur and tellurium, therefore it shares characteristics of both elements. Selenium's proximity to tellurium results in important separation problems when these two element co

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CiteSeerX — RECYCLING OF CdTe PHOTOVOLTAIC MODULES ...

Low concentration sulfuric acid solutions were effective in totally leaching cadmium and tellurium out of the Limestone matrix. We used ion exchange columns in series to separate copper and tellurium from cadmium in solution. Subsequently, we recovered Cd and Te from the corresponding solutions with electrowinning and reactive precipitation respectively. Electrowinning produced cadmium

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Cadmium: processing-Metalpedia

In the hydrometallurgical process, zinc, copper and cadmium are dissolved in the sulfuric acid leach of the roasted zinc ore. The copper and cadmium are among the most common interfering impurities that are removed before the purified solution is subjected to electrolysis for zinc recovery. Copper is precipitated from the solution using a determined amount of zinc dust. Most of the cadmium

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The polarographic determination of copper, cadmium ...

The polarographic determination of copper, cadmium, thallium, lead, tellurium and iron in selenium . E. L. Bush Abstract. The first page of this article is

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Cadmium Telluride Department of Energy

High absorption: Cadmium telluride is a direct-bandgap material with bandgap energy of about 1.45 defined (eV), which is well matched to the solar spectrum and nearly optimal for converting sunlight into electricity using a single junction. Low-cost manufacturing: Cadmium telluride solar cells use low-cost manufacturing technology to produce low-cost cells. Production. The most

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The perculiarities of tellurium behaviour in the process ...

Oxidative pressure leaching of the material for 1 hour at 105–120 oС, 0.1–0.3 MPa oxygen partial pressure, S:L = 5–6, and ~100 g/dm3 solution initial acidity ensures extraction in the solution about 95–98% of copper and 40–65% of tellurium. The tellurium extraction depends on mass exchange conditions, and is independent of the temperature and oxygen partial pressure. The

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SU1241998A3 - Method of extracting zinc,copper and cadmium ...

1464447 Recovering zinc, copper and cadmium; jarosites OUTOKUMPU OY 11 Feb 1974 [12 Feb 1973] 6077/74 Heading C1A Zinc calcine is subjected to "neutral leaching" with a deficiency of sulphuric acid to dissolve substantially all non-ferrous metal oxides and leave ferrites; the solution is separated and Zn, Cu and Cd are recovered therefrom; the residue is treated at

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US5779877A - Recycling of CIS photovoltaic waste - Google ...

A method for extracting and reclaiming metals from scrap CIS photovoltaic cells and associated photovoltaic manufacturing waste by leaching the waste with dilute nitric acid, skimming any plastic material from the top of the leaching solution, separating Limestone substrate from the leachate, electrolyzing the leachate to plate a copper and selenium metal mixture onto a first

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Long-term leaching of photovoltaic modules - IOPscience

05/07/2017  In order to identify the leaching mechanisms as well as potential weak spots in the modules, we analyze not only leaching of toxic substances like cadmium (Cd), lead (Pb), and selenium (Se), but also other elements: silver (Ag), zinc (Zn), tellurium (Te), indium (In), gallium (Ga), aluminum (Al), molybdenum (Mo), nickel (Ni), and copper (Cu). To obtain module

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The Life Cycle of Copper, its Co-Products and By-Products

THE LIFE CYCLE OF COPPER, ITS CO-PRODUCTS AND BYPRODUCTS Robert U. Ayres and Leslie W. Ayres Center for the Management of Environmental Resources INSEAD, Boulevard de Constance F-77305 Fontainebleau Cedex France and Ingrid Råde Physical Resource Theory Department School of Physics Chalmers University of Technology Gothenburg Sweden With

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Recycling of CdTe photovoltaic waste - Drinkard Metalox, Inc.

This process was based upon leaching the scrap in an acidic ferric chloride solution. In order to achieve efficient extraction of the cadmium and tellurium from the scrap the process required a pressure autoclave at 400 psig at 110° C. under an oxygen atmosphere. These extreme conditions make this process unattractive to scale up to in-situ ...

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