Recycling of powdered building wastes in environmental technologies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919749" target="_blank" >RIV/60461373:22310/19:43919749 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

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

—

OECD FORD obor

20501 - Materials engineering

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

SGEM 2019, 19th UInternational Multidisciplinary Scientific Geoconference

ISBN

978-619-7408-98-0

ISSN

—

e-ISSN

1314-2704

Počet stran výsledku

6

Strana od-do

121-126

Název nakladatele

SGEM International Multidisciplinary Scientific Geoconference

Místo vydání

Vienna

Místo konání akce

Vienna

Datum konání akce

9. 12. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—