Adsorption of Divalent Copper, Zinc, Cadmium and Lead Ions from Aqueous Solution by Waste Tea and Coffee Adsorbents

2006 ◽  
Vol 27 (1) ◽  
pp. 25-32 ◽  
Author(s):  
H. Djati Utomo ◽  
K.A. Hunter
Keyword(s):  
Aqueous Solution ◽  
Lead Ions ◽  
Divalent Copper ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Waste Tea ◽  
Cadmium And Lead

scholarly journals Environmental Impacts of an Old Mine Tailings Deposit – Metal Concentrations and Water Pathways

1987 ◽  
Vol 18 (4-5) ◽  
pp. 301-312 ◽  
Author(s):  
P. Sandén ◽  
S. Karlsson ◽  
U. Lohm
Keyword(s):  
Environmental Impacts ◽  
Mine Tailings ◽  
Water Bodies ◽  
Contaminated Water ◽  
Surrounding Area ◽  
Metal Concentrations ◽  
Principal Source ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead

Variations in metal concentrations in a heavily polluted stream receiving acidic leachates from an old mine tailings deposit are analysed from a hydrological perspective. From an extensive data material, collected during three years, the variations in concentrations of four metals (copper, zinc, cadmium and lead) are discussed. The deposit is the principal source for these metals in the watershed. The variation in metal concentrations in the vicinity of the deposit can to a large extent be explained by simple dilution of contaminated water with uncontaminated water from the surrounding area. Further downstream the deposit, other processes become increasingly important for the metal concentrations in the water bodies.

Influence of Nitrilotriacetate on the Elimination of Metal Ions by Coprecipitation with Ferric Hydroxide

1987 ◽  
Vol 19 (5-6) ◽  
pp. 1013-1019 ◽  
Author(s):  
F. H. Frimmel ◽  
J. Geywitz
Keyword(s):  
Conditional Distribution ◽  
Ferric Hydroxide ◽  
Distribution Coefficients ◽  
Metal Species ◽  
Batch Experiments ◽  
Reaction Conditions ◽  
Low Concentrations ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead

The elimination of dissolved copper, zinc, cadmium and lead by coprecipitation with iron(III) hydroxide was investigated. The reaction conditions of the batch experiments were adopted from water treatment. Conditional distribution coefficients show the order Cd < Zn < Cu < Pb for increasing interaction of the metals with the ferric hydroxide. The presence of nitrilotriacetate (NTA) decreases the efficiency of the metal elimination. NTA is also able to remobilize metals from the metal enriched precipitation. There is a significant effect, even at low concentrations of a few µmol/l. Remobilization of Cu, Zn and Cd increases, remobilization of Pb decreases with reaction time. The “ageing” of the precipitation plays an important role for the yield of the reactions. From a broad application of NTA in detergents an increase of the concentration of dissolved metal species has to be expected.

Copper, Zinc, Cadmium, and Lead in Sheep Grazing in North Greece

1999 ◽  
Vol 62 (6) ◽  
pp. 691-699 ◽  
Author(s):  
N. Zantopoulos ◽  
V. Antoniou ◽  
E. Nikolaidis
Keyword(s):  
Sheep Grazing ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead

scholarly journals Determination of some heavy metal levels in soft drinks from Turkey using ICP/OES method

2010 ◽  
Vol 28 (No. 3) ◽  
pp. 213-216 ◽  
Author(s):  
M. Bingöl ◽  
G. Yentür ◽  
B. Er ◽  
A.B. Öktem
Keyword(s):  
Heavy Metals ◽  
Soft Drinks ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Metal Levels ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Arsenic Copper ◽  
Cadmium And Lead

Total number of 104 canned soft drinks collected from several regions in Turkey were analysed. The purpose of this study was to determine the levels of heavy metals in the drinks commonly consumed in Turkey. Quantitative determination of heavy metals: arsenic, copper, zinc, cadmium, and lead in all samples was carried out by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry) method. The mean levels (± SE) of arsenic, copper, zinc, cadmium, and lead were found to be 0.037 ± 0.002 mg/kg, 0.070 ± 0.009 mg/kg, 0.143 ± 0.012 mg/kg, 0.005 ± 0.0003 mg/kg, and 0.029 ± 0.002 mg/kg, respectively, in soft drinks. Our data revealed that arsenic, copper, zinc, cadmium, and lead mean levels found in all soft drinks, collected from several regions in Turkey, were within the Turkish Food Codex (TFC) values.

scholarly journals Environmental Impacts of an Old Mine Tailings Deposit — Metal Adsorption by Particulate Matter

1987 ◽  
Vol 18 (4-5) ◽  
pp. 313-324 ◽  
Author(s):  
S. Karlsson ◽  
P. Sandén ◽  
B. Allard
Keyword(s):  
Mine Tailings ◽  
Time Series Data ◽  
Environmental Water ◽  
Solution Phase ◽  
Series Data ◽  
Particulate Metal ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead ◽  
Analysis Of Time Series

The distribution of metals (aluminum, manganese, iron, copper, zinc, cadmium and lead) between suspended particles and solution phase has been studied by analysis of time series data in a stream receiving leachates from a mine tailings deposit. A precipitation of aluminum and iron takes place when the acidic effluents are neutralized by unpolluted groundwater, while the other dissolved elements never reach saturation. The particulate fraction is largely amorphous. A transfer of dissolved elements from the solution phase to the particle phase, increasing in the order zinc < cadmium < copper < lead with increasing pH, is observed. This removal of metals from the aqueous phase appears to be due to sorption processes rather than to coprecipitation. The formation of a particulate metal fraction could be the means for long-range transportation and redistribution of metals in environmental water systems.

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