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| Description
| - In this study, we focused on the degradation ability of pure and stabilized nanoscale zerovalent iron particles (NZVI) by silica stabilizator for remediation purposes. We studied the degradation of selected chlorinated ethylenes by the aqueous suspension of iron nanoparticles Nanofer 25. The main problem of iron nanoparticles is their instability in an aqueous solution which leads to aggregation. Previous studies showed that silica compounds provided successful stabilization of nanoparticles. Our nanoparticles were stabilized by a water glass solution. The water glass was simply mixed with the nanoiron suspension. Batch experiments ideally simulated conditions of remediation in contaminated aquifer. The applied concentration of the chlorinated ethylenes (? 0.1mM) and the excess of iron nanoparticles corresponded to the usual values at decontaminated sites. The degradation ability of the pure suspension was verified. At the same time, the effect of the silica stabilizer on the degradation ability was identified. The kinetic parameters were evaluated to assess the degradation ability of both suspensions. Nanofer 25 was characterized by BET and the determination of a content of zerovalent metal. We found that the pure suspension Nanofer 25 reduced less chlorinated ethylenes effectively. At the beginning, the silica compound supported the degradation of the contaminants; however, the degradation of the higher chlorinated ethylenes stopped prematurely and the concentrations remained constant until the end of the experiment. Experiments with stabilized iron nanoparticles showed partially limited degradation of the higher chlorinated contaminants.
- In this study, we focused on the degradation ability of pure and stabilized nanoscale zerovalent iron particles (NZVI) by silica stabilizator for remediation purposes. We studied the degradation of selected chlorinated ethylenes by the aqueous suspension of iron nanoparticles Nanofer 25. The main problem of iron nanoparticles is their instability in an aqueous solution which leads to aggregation. Previous studies showed that silica compounds provided successful stabilization of nanoparticles. Our nanoparticles were stabilized by a water glass solution. The water glass was simply mixed with the nanoiron suspension. Batch experiments ideally simulated conditions of remediation in contaminated aquifer. The applied concentration of the chlorinated ethylenes (? 0.1mM) and the excess of iron nanoparticles corresponded to the usual values at decontaminated sites. The degradation ability of the pure suspension was verified. At the same time, the effect of the silica stabilizer on the degradation ability was identified. The kinetic parameters were evaluated to assess the degradation ability of both suspensions. Nanofer 25 was characterized by BET and the determination of a content of zerovalent metal. We found that the pure suspension Nanofer 25 reduced less chlorinated ethylenes effectively. At the beginning, the silica compound supported the degradation of the contaminants; however, the degradation of the higher chlorinated ethylenes stopped prematurely and the concentrations remained constant until the end of the experiment. Experiments with stabilized iron nanoparticles showed partially limited degradation of the higher chlorinated contaminants. (en)
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| Title
| - Effect of silica stabilization on the degradation ability of zerovalent iron nanoparticles.
- Effect of silica stabilization on the degradation ability of zerovalent iron nanoparticles. (en)
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| skos:prefLabel
| - Effect of silica stabilization on the degradation ability of zerovalent iron nanoparticles.
- Effect of silica stabilization on the degradation ability of zerovalent iron nanoparticles. (en)
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| skos:notation
| - RIV/60461373:22320/11:43891984!RIV12-MSM-22320___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22320/11:43891984
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - zerovalent iron nanoparticles, chlorinated ethylenes, silica, stabilization, in-situ remediation (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Honetschlägerová, Lenka
- Janouškovcová, Petra
- Kochánková, Lucie
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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