Method for screening Cu Zn or Pb phytotoxicity on
Figure 2. Shoot and root biomass of switchgrass cv. Cave -in Rock plants after 56 days of growth in substrate spiked with Cu a, Zn b, or Pb c. a b c Cu gg 0 150 275 525 Zn gg 0 300 550 1050 Pb gg 0 1000 2000 4000
Phytoextraction of zinc copper nickel and lead from a
Abstract. In a pot culture experiment, five different species of Brassica Brassica juncea, Brassica campestris, Brassica carinata, Brassica napus, and Brassica nigra were grown for screening possible accumulators of heavy metals, viz. Zn, Cu, Ni, and Pb. The plants were grown to maturity in a soil irrigated with sewage effluents for more than two decades in West Delhi, India.
Application of Fly Ash and Slag Generated by Incineration
Results show that C30 concrete optimum replacement rates of fly ash and slag are 30 and 20, which can meet the minimum strength requirement. The leaching concentrations of Cu, Zn, Pb, Cr, and Cd in MSWI concrete samples are determined to be less than the identification value of
Preparation of Black Ceramic Tiles Using Waste Copper Slag
Copper slag and stainless steel slag of Electric Arc Furnace EAF are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu. The transition metal elements in the waste slags, such as Cr and Fe, can be recycled as the coloring ions in the black ceramic tile. In this study, the FeCr molar ratio in the raw materials of copper slag and ...
Shortterm leaching study of heavy metals from LD slag of
Mar 15, 2016 As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Se, V and Zn were leached from LD slag from three major steel industries i.e. Roulkela, Bokaro and Tata Steel Plants of India and were analysed by inductively coupled plasma optical emission spectrometer ICP-OES.
Characteristics and environmental aspects of slag A
Jun 01, 2015 Zinc slag contains comparable amounts of Ni, Pb, and Zn to Cu slag but the As, Cd, Co, and Cu contents do not reach the maximum values found in Cu slag. Elements that commonly exceed environmental soil screening levels in Zn slag include As, Cr, Pb, and Zn . Nickel sulfide slag contains Co in concentrations that exceed the industrial soil ...
PYROMETALLURGICAL SLAGS AS A POTENTIAL
Cu from 7,48 to 64,95 , and change in a broad range. This slags show significant heterogeneity, caused by inter-metallic phases Zn - Pb, Cu - Zn, Cu - Pb formed on the surface thereof. It is so possible that slag can be a potential source of this metals recovery.
Characteristics and environmental aspects of slag a review
The concentrations of some elements exceed generic USEPA soil screening levels for human contact based on multiple exposure pathways these elements include Al, Cr, Cu, Fe, Mn, Pb, and Zn based on bulk chemical composition. Each slag type usually contains a specific suite of elements that may be of environmental concern.
An overview of recovery of metals from slags ScienceDirect
Jan 01, 2003 For example, in the leaching of a brass smelting slag containing 6.3 Cu free metal, 14.4 Cu oxide form, 11.35 Zn oxide form and 1.33 Pb oxide form with hydrochloric acid or ammonia, addition of H 2 O 2 greatly increased the extent of metal extraction, especially in the hydrochloric acid leaching, as shown in Fig. 3, Fig. 4 Basir et ...
Blast Furnace Slag Cement an overview ScienceDirect Topics
Test in nitric acid NEN 7345, 1993 Ba, Zn, Pb, Cr and Cd show concentrations below detectable limits. Comparing the different matrices, there is a lower release of Zn and Cr matrices with Portland cement and with blast furnace slag gepolymers, a fact probably related to the high alkalinity of the calcium-containing matrices.
THE EFFECT OF COPPER CONTENT IN THE MATTE ON
experiment, samples of slag and matte were gathered in order to determine the contents of Cu, Au, Ag, Pb, Zn, Ni, As, Sb, Se and Bi with the aim to determine their distribution coefficients between these phases. Matte quality, determined by the contents of copper in the matte, ranged from 36.31 Cu to 42.12 Cu, in the investigated system.
Chemical and mineralogical evaluation of slag products
Slag products from pyrolysismelting plants were sampled for the purpose of detailed phase analysis and characterization of heavy metal-containing phases using optical microscopy, electron probe microanalysis EPMA, XRF and XRD. ... Elevated concentrations of Zn, Cr, Cu, Pb and Ba were recorded in the bulk composition. Cu, Pb and Ba behave as ...
Pyrometallurgical Refining of Copper in an Anode Furnace
In the slag the different metals M e.g. Cu, Ni, Zn, Pb, Sn etc. exist in the form of oxides, as demonstrated by the reaction in equation 2. Equation 3 shows the corresponding equilibrium
mobile cu zn pb and screening operation
Mobile forms and migration ability of Cu, Pb and Zn in . 612016 The total concentrations of Cu, Pb and Zn and their bioavailability were studied in forest soil and vegetative communities grass and wild strawberries collected from two areas A and B Two single extraction methods were used for the evaluation of the availability of Cu, Pb and Zn in forest soils The total metal concentrations ...