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Remediation of heavy metals from soil using quartz sand functionalized with organic amino silanes

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Grzesiak P., Łukaszyk J., Schroeder G., Kurczewska J.
Polish Journal of Chemical Technology
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2013
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vol. 15
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issue 4
116-120
EN
The results of the research studies concerning the binding of heavy metals (HMs) by quartz sand functionalized with amino silanes have been described. The studies have been carried out on soils sampled from the areas affected by emissions from Copper Smelter and Refinery. The research aims to increase the food safety in the areas of industrial impact. The presence of polyamine chain in the hybrid materials obtained enables a binding of heavy metals (nickel, copper, cobalt). The best results are observed for the hybrid material having four amine groups (four coordination centers) per molecule. For this material the highest content after two extraction cycles (pH 7.0 and 5.0) is observed for copper (98.2%), but for other ions (nickel, cobalt) it is at least 85% of the initial amount of components available for plants.
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The dependance of an activity of vanadium catalysts on a carrier regeneration method and an active phase composition

100%
Grzesiak P., Grobela M., Hłyń T., Łukaszyk J.
Polish Journal of Chemical Technology
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2013
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vol. 15
|
issue 4
107-110
EN
The results of the research studies concerning the reaction rate of SO2 oxidation on the vanadium catalysts have been described. A carrier of the active phase - silica has been regenerated from spent vanadium mass by leaching with H2SO4 solution. The dependence of the oxidation reaction rate on the method of treating a catalyst carrier as well as the composition of an active phase of the new catalyst systems has been also presented.
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Binding of Industrial Deposits of Heavy Metals and Arsenic in the Soil by 3-Aminopropyltrimethoxysilane

100%
Grzesiak P., Łukaszyk J., Schroeder G., Kurczewska J.
Polish Journal of Chemical Technology
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2014
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vol. 16
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issue 2
12-15
EN
The results of the research studies concerning binding of heavy metals and arsenic (HM+As), occurring in soils affected by emissions from Głogów Copper Smelter and Refinery, by silane nanomaterial have been described. The content of heavy metals and arsenic was determined by AAS and the effectiveness of heavy metals and arsenic binding by 3-Aminopropyltrimethoxysilane was examined. The total leaching level of impurities in those fractions was 73.26% Cu, 74.7% – Pb, 79.5% Zn, 65.81% – Cd and 55.55% As. The studies demonstrated that the total binding of heavy metals and arsenic with nanomaterial in all fractions was about as follows: 20.5% Cu, 9.5% Pb, 7.1% Zn, 25.3% Cd and 10.89% As. The results presented how the safety of food can be cultivated around industrial area, as the currently used soil stabilization technique of HM by soil pH does not guarantee their stable blocking in a sorptive complex.
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