3 edition of Results of Epa Extraction Procedure Toxicity Test Applied to Copper Reverberatory Slags. found in the catalog.
Results of Epa Extraction Procedure Toxicity Test Applied to Copper Reverberatory Slags.
United States. Bureau of Mines.
|Series||Report of investigations (United States. Bureau of Mines) -- 8648|
|Contributions||Johnson, E., Oden, L., Sanker, P.|
concentrated acidic copper solution from which metallic copper can be plated out. Your group is to test the licensed process, determine equilibrium data, and determine the effect of major process variables such as feed rates, residence times, feed concentrations, and stirring. levels. tion fluid for the TCLP test, a preliminary test was per-formed to measure the pH of the CRTs samples (5 g of CRT sample mL of reagent water) (16). Since the pH of all samples was less than 5, TCLP extraction fluid #1 was selected. Two thousand grams of extraction fluid ( mL of glacial acetic acid in mL reagent water per mL ofCited by:
The results indicate that a reductive roast prior to leaching is necessary to obtain high extractions. In order to better understand the leaching characteristics of the flue dust, attempts were made to synthesize and study the leaching of the main copper-bearing constituent, cufeo2. V FINAL REPORT PROJECT TITLE: Characterization of Lead Leachability from Cathode Ray Tubes Using the Toxicity Characteristic Leaching Procedure PRINCIPAL INVESTIGATORS: Timothy G. Townsend AFFILIATION: Department of Environmental Engineering Sciences, University of Florida COMPLETION DATE: December PHONE NUMBER: () KEY WORDS CRT, lead, Cited by:
METHOD for SEQUENTIAL AND RESIDUAL COPPER ANALYSIS PURPOSE: To determine, through sequential dissolution, the probable copper distribution by copper mineral in a sample. SCOPE: Matrix: Copper ores Analyte: Copper (Cu) Range. When reviewing Methods of Eliminating Copper from Gold Ores we see that several methods have been suggested to eliminate copper from ores prior to cyanidation. Preliminary extraction of the copper with sulphuric or sulphurous acids may be applicable to ores containing oxidized copper minerals such as malachite, azurite and chrysocolla but these acids have but little effect on sulphide copper.
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As part of its effort to reduce the environmental impact associated with mining and metallurgical operations, the Bureau of Mines used a modified form of the Environmental Protection Agency's extraction procedure toxicity test on copper reverberatory slags that contained low, medium, and high levels of the impurity elements as, pb, sb, bi, and zn.
Results of EPA extraction procedure toxicity test applied to copper reverberatory slags. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Johnson, E.A. (Elizabeth Ann), Results of EPA extraction procedure toxicity test applied to copper reverberatory slags.
EXTRACTION PROCEDURE (EP) TOXICITY TEST METHOD AND STRUCTURAL INTEGRITY TEST SCOPE AND APPLICATION This method is used to determine whether a waste exhibits the characteristic of Extraction Procedure Toxicity. The procedure may also be used to simulate the leaching which a waste may undergo if disposed of in a sanitary landfill.
The effect of the slag particle size on copper and iron dissolution is shown in Fig. particle sizes 40 μm, the extraction of copper decreases slightly in the Refimet slag and Cited by: The results obtained through use of 2 widely employed leaching methods are reviewed in this investigation.
The investigation compared the Extraction Procedure Toxicity Test (EPTox) promulgated to extract leachable organics and metals from solid wastes, and the Toxicity Characteristic Leaching Procedure (TCLP) that was proposed to replace EPTox.
METHOD TOXICITY CHARACTERISTIC LEACHING PROCEDURE SCOPE AND APPLICATION The TCLP is designed to determine the mobility of both organic and inorganic analytes present in liquid, solid, and multiphasic wastes.
If a. the Toxicity Characteristic Leaching Procedure (TCLP). Given Congressional concerns, EPA's primary focus in developing the TCLP was to satisfy two objectives: 1) to create a test that would generate replicable results for organics, and 2) to create a test that would yield the same results for inorganics as the original EP Size: KB.
Stability of copper smelter slag in sea water Results of EPA extraction procedure toxicity test applied to copper reverberatory slags (As Bi Pb Sn Zn). P.E. Sanker; The copper.
Due to this variability in recovery (extraction effi- ciency) it is recommended that the intent of the EP toxicity test be emphasized, i.e., that it is an indicator of the concentration of mobile metal species not a total extraction procedure. GOVERNMENT PRINTING OFFICE/l 16/ Comparison of the extraction procedure toxicity test (EP) and the toxicity characteristic leaching procedure (TCLP) for the analysis of trace organic compounds in land applied municipal wastewater sludges.
View/ Open. LDV_Cpdf (Mb) Downloads: Date Author: Sheryl A Chestnutt. Introduction. A large number of parameters influence the leaching behaviour of solid waste materials. In addition to the chemical composition of the waste and the leaching solution, liquid-to-solid (L/S) ratio, leaching time, the pH and the grain size of the material are the most important factors.Testing of the leaching behaviour of solid waste is mandatory in the EU countries Cited by: leaching of copper from copper slag is shown in Figure 1.
RESULTS AND DISCUSSION Table I gives the chemical composition of the copper slag; the results are obtained by using X-ray fluorescence analysis. It can be observed from the analysis that iron, silicon and calcium are the major constituents.
Table I. Chemical analysis of copper Size: KB. ituses to assess extractable organics produces results comparable to the proposed Toxicity Characteristic Leaching Procedure (TCLP) recommended by the United States Environmental Protection Agency (EPA).
The method currently in use is the Extraction Procedure (EP). EP TEST RESULTS FOR DOPED COPPER REVERBERATORY SLAG SYSTEMS As in Slag, % ' Extraction Solution Analysis, mg/L As" Cdb Cr" Pbb Zn 0.
Copper is an essential mineral that the body incorporates into enzymes play a role in the regulation of iron metabolism, formation of connective tissue, energy production within cells, the production of melanin (the pigment that produces skin color), and the function of the nervous test measures the amount of copper in the blood, urine, or liver (hepatic).
The TCLP, acid leaching and multiple extraction test results carried out on a large number of slag samples of varying compositions derived from the use of several copper concentrates indicate poor.
Among these extraction methods, the Toxicity Characteristic Leaching Procedure (TCLP) was designed by the US EPA (; ) in order to ascertain the leachability potential of hazardous and toxic chemicals from solid waste under typical environmental conditions (Chang et al.
; US EPA ; Halim et al. ).Cited by: 2. EPA R NTIS PB TECHNICAL RESOURCE DOCUMENT EXTRACTION AND BENEFICIATION OF ORES AND MINERALS VOLUME 1 LEAD-ZINC June U.S. Environmental Protection Agency Office of Solid Waste Special Waste Branch File Size: KB. Prepare by dilution mL each of copper standard solutions with concentrations approximately 5, 10, 15, and 25 mg/L.
Extraction. The extraction procedure is the same for the sample, standards and blank (water). With a volumetric pipet, transfer 10 mL aliquots of the solution to a separatory funnel. The State of California uses TCLP concerning toxicity and it applies an additional set of leaching procedures as defined in Titles 22 and 26 of the California Code of Regulation called the Waste Extraction Test [WET].
The results of the California WET tests are compared to their respective regulatory limit's Total Threshold Limit Concentrations. test initiation and is analyzed addition to the test solution and the acid strip. The combined results are presented in units of normalized mass loss (g/m*). B. Toxicity Characteristic Leaching Procedure Two types of samples were tested from the ceramic waste form product produced: samples from the ceramic waste form material andCited by: 1.RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND LEACHING Kiraz, Emirhan M.S., Department of Mining Engineering Supervisor: Prof.
Dr. Mustafa Ümit Atalay December65 pages The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H 2 SO 4) Size: 2MB.The copper solvent extraction produces acid in the aqueous phase, as shown in equation 1.
+ +↔ + + 2RHOrg Cuaq R2CuOrg 2Haq 2 (Eq. 1) For each mole of copper removed from the aqueous it is replaced with 2 moles of protons, the equivalent acidity of 1 mole of sulphuric acid. In low tenor copper solutions this is insignificant because the change in.