The present research extended investigations into the immobilization mechanism of metal ions as well as the leaching characteristics of Pb, Cu and Zn from …
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The concentration and speciation of Cu, Pb and Zn in soil samples collected around the lead–zinc smelting plant of Baoji, NW China, were determined using X-ray fluorescence spectrometry and the modified European Community Bureau of Reference sequential extraction procedure. The single pollution index (PI) and the integrated …
Spontaneously growing native plants were analyzed to study the accumulation of Cd, Cr, Cu, Zn, Pb, Fe and P in shoots and roots and other plant species demonstrated to grow well in metal contaminated soil taking up only low concentrations of metals, and, therefore, they are good candidates for phytostabilization. Expand
Within the scope Cu, Pb, Zn and Fe distributions were assessed. Finally, the models for ball mills and cyclones were developed via the perfect mixing approach and the efficiency curve approach respectively. ... Optimization of regrinding ball mills at Carol pellet plant of the Iron Ore Company of Canada. Miner. Metall. Process, 7 (1990), pp ...
In this study, the effects of industrial and urban pollution on Pb, Al, Cd, Cu, and Zn accumulation, peroxidase activity, and pigment and protein contents were investigated in shrub and tree leaves in Antakya, Turkey. We determined that industrial and traffic activities produce the most plant-incorporated air pollutants in Antakya City. Cu …
Semantic Scholar extracted view of "The plant P1B‐type ATPase AtHMA4 transports Zn and Cd and plays a role in detoxification of transition metals supplied at elevated levels" by R. Mills et al. ... supporting a role for OsHMA9 in Cu, Zn, and lead efflux from the cells. Expand. 206. ... a P1B-type ATPase of the Zn/Co/Cd/Pb subclass. R. …
To investigate the adsorption capacity of BCs for Pb, Cd, Cu, and Zn, adsorption batch experiments were conducted. Analytical grade Pb(NO 3) 2, Cd(NO 3) 2, Cu(NO 3) 2, Zn(NO 3) 2 were used as source …
Total Zn, Pb, and Cd concentrations were 568.42, 472, and 6.85 mg kg −1, respectively, which far exceeded their background values (20, 95, and 0.3 for Pb, Zn, and Cd, respectively) 75 and the ...
Cu-Pb-Zn polymetallic sulfide ores are valuable resources in the mining industry. ... Xinhai provides ore processing plant and full set equipment: Ball mill, Hydrocyclone, Flotation, Washing plant ...
At a milling speed of 500 rpm, and BPR 12, the leaching concentrations of Pb, Cu and Zn decreased with increasing milling time as shown in Fig. 2.The leaching concentrations of Pb, Cu and Zn in untreated soil were 13.92 mg·L −1, 2.71 mg·L −1, and 114.31 mg·L −1, which were 273 times, 2.6 times, and 113 times higher than the Class …
This article will review advances in the beneficiation of Cu–Co minerals in the DRC, including developments in the flotation of oxidised Cu–Co ores after …
Unlike Cr, Cu, Cd, and Pb, the maximum Zn concentration was not found in plants at site HN-4 or HN-5, but in A. philoxeroides (365 mg kg −1) at site HN-3. Furthermore, Z. candida and C. dactylon at site HN-2 and even C. rotundus at Site HN-6 contained Zn concentrations greater than 200 mg kg −1, exceeding the highest Zn …
We determined the uptake of Sb, Pb, Cu, Zn and Cd in the aboveground biomass of nine plant species growing on a calcareous (Chur) and a weakly acidic …
A floatation plant treats feed whose grade is 0.8 . The plant produces concentrate and tailings. The copper grade of concentrate is 26% and that of tailings is 0.16%. Calculate: % Cu. F. Lmass of feed,M. C. Lmass of concentrate . T. M. F. M. C. M. T. M. F. f LM. C. c Et HM. T (2) By 1 and 2 we get M. F. M. C. a)
In the former Katanga region of the Democratic Republic of Congo (DRC), the hydrometallurgical processing of copper-cobalt oxide ores enables producing copper as …
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Pb-affected plants show significant retardation in physiological attributes such as seed germination, sapling development, plant growth, transpiration rate, cell division, lamellar chloroplast functions, and chlorophyll production (Table 1) [15, 16].In biochemical effects, Pb causes high production of reactive oxygen species (ROS) like …
Samples of soil, water and plants were analysed for total Zn, Cu, Pb and Ni concentrations using flame atomic absorption spectrophotometry. The trace metal concentrations in soil were the highest ...
traffic activities produce the most plant-incorporated air pollutants in Antakya City. Cu and Al amounts were high in plants in the urban street location and Cd, Pb, and Zn amounts where high for all plants in the industrial site. Acer negundo L. showed maximum Pb and Zn accumulation at the industrial site and Al accumulation for the urban ...
In order to assess their practical capability for the absorption and accumulation of Pb, Zn, and Cu, five common crop plants, i.e. maize (Zea mays), sunflower (Helianthus annuus), canola (Brassica ...
Standard solutions of Cd, Cr, Cu, Pb, Ni and Zn were prepared by dilution of certified standard solutions (1000 mg/L) Fluka Kamika ( CH-9471, Buchs, Switzerland). 99.99% pure argon, used as sheath gas for the atomizer and for internal purge. Due to unavailable certified samples of sediment, we check the reproducibility of …
The pairs of Cu–Zn (0.486) and Zn–Pb (0.423) showed high and significant correlations at 99 and 95 % confidence levels, respectively. Furthermore, the linear correlation for soil to leaf transfer showed that between Cd in soil and leaf, there is a high and significant correlation (0.560) at 99 % confidence level.
DOI: 10.1016/S0098-8472(02)00002-3 Corpus ID: 83738999; Accumulation properties of As, Cd, Cu, Pb and Zn by four wetland plant species growing on submerged mine tailings @article{Stoltz2002AccumulationPO, title={Accumulation properties of As, Cd, Cu, Pb and Zn by four wetland plant species growing on submerged mine tailings}, author={Eva …
DOI: 10.1016/J.SCITOTENV.2006.01.016 Corpus ID: 2878125; Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site. @article{Yoon2006AccumulationOP, title={Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site.}, author={Joonki Yoon and Xinde Cao and …
High levels of Zn (1453.3 ± 220.3 μg g⁻¹) were found in plant tissue compared to Pb (277.2 ± 18.0 μg g⁻¹) and Cu (255.3 ± 25.6 μg g⁻¹). Toxicological endpoints correlated with metal ...
1.. IntroductionThe accumulation of heavy metals in agricultural soils is of increasing concern because of food safety issues, potential health risks, and its detrimental effects on soil ecosystems (McLaughlin et al., 1999, Cui et al., 2004).Hg, Pb and Cd are of great concern because of their toxicity to human health and other organisms, whereas …
sensitive use according to Romanian legislation, 1.5 times in case of Cu and Cd, 3 times in case of Zn and 18 times in case of Pb. Tab. 1. Descriptive statistics of total, water and DTPA extractable Cu, Pb, Zn and Cd in soil Cu Pb Total DTPA Water Total DTPA Water (mg kg-1) Min 38.1 6.5 1.4 87.8 0.1 0.7 Max 1770 187 147 23300 753 16.2
Using plant tissues for sample col- ... Ni, Pb and Cu kg-1, or 10,000 mg Zn and Mn kg, ... a fine powder in a Retsch CroMill cryogenic ball mill. The CroMill was designed for grinding using
