Recycling of powdered building wastes in environmental technologies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00354661" target="_blank" >RIV/68407700:21110/19:00354661 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2019V/4.2/S04.017" target="_blank" >https://doi.org/10.5593/sgem2019V/4.2/S04.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2019V/4.2/S04.017" target="_blank" >10.5593/sgem2019V/4.2/S04.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Recycling of powdered building wastes in environmental technologies

Popis výsledku v původním jazyce

Concrete slurry waste (CSW) from the production of prestressed poles production in original and Fe-modified form (CSWFe) was studied as potential adsorbent of environmentally risk cations (Cd2+, Pb2+) and oxyanions (AsO43- and CrO42-) from contaminated waters. Structural, surface and chemical properties of adsorbents were characterized by Powder X-ray diffraction (XRD), X-ray fluorescence (XRF), Specific surface area (SBET) and Scanning electron microscopy (SEM). Adsorption experiments ran in a batch manner at laboratory temperature (20°C) with the model solutions of toxic ions. The modification of CSW with FeII increased its adsorption selectivity to anions about 20% at a lower sorbent consumption. The cations (Pb2+ and Cd2+) were adsorbed quantitatively (~100%) on CSW at the sorbent consumption of 10 - 120 g per 1 g of contaminant. The adsorption of AsO43- and CrO42- on CSWFe reached > 95% for AsO43-and 40-60% for CrO42-, at the sorbent consumption of 80 - 200 g per 1 g of contaminant.

Název v anglickém jazyce

Recycling of powdered building wastes in environmental technologies

Popis výsledku anglicky

Concrete slurry waste (CSW) from the production of prestressed poles production in original and Fe-modified form (CSWFe) was studied as potential adsorbent of environmentally risk cations (Cd2+, Pb2+) and oxyanions (AsO43- and CrO42-) from contaminated waters. Structural, surface and chemical properties of adsorbents were characterized by Powder X-ray diffraction (XRD), X-ray fluorescence (XRF), Specific surface area (SBET) and Scanning electron microscopy (SEM). Adsorption experiments ran in a batch manner at laboratory temperature (20°C) with the model solutions of toxic ions. The modification of CSW with FeII increased its adsorption selectivity to anions about 20% at a lower sorbent consumption. The cations (Pb2+ and Cd2+) were adsorbed quantitatively (~100%) on CSW at the sorbent consumption of 10 - 120 g per 1 g of contaminant. The adsorption of AsO43- and CrO42- on CSWFe reached > 95% for AsO43-and 40-60% for CrO42-, at the sorbent consumption of 80 - 200 g per 1 g of contaminant.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

<a href="/cs/project/GA19-11027S" target="_blank" >GA19-11027S: Betonárenský kal - nebezpečný odpad nebo druhotná surovina?</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

19th International Multidisciplinary Scientific Geoconference SGEM 2019

ISBN

978-619-7408-89-8

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

6

Strana od-do

121-126

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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