Study of Phosphate Retention on Model of Amorphous Blast Furnace Slags

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F17%3A10236007" target="_blank" >RIV/61989100:27350/17:10236007 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27360/17:10236007

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Study of Phosphate Retention on Model of Amorphous Blast Furnace Slags

Original language description

The sol-gel method was chosen for the preparation of model amorphous blast furnace slag (SG). The amorphous structure of the prepared slag was verified by X-ray diffraction and the specific surface was determined using SBET. Model slag was tested as a sorbent of phosphates from water solutions. The obtained results were compared with the results of the real blast furnace slag of the same composition (BFS). It was found that phosphate retention was accomplished by the same mechanisms as in the case of BFS. The higher value of theoretical adsorption capacity of the model slag, which was 44.05 mg P/g, was caused by a different method of preparation. It turned out that the sol-gel method was suitable for the efficient preparation of model slags of desired composition. The existence of the hydroxyapatite phase (HAp) in the adsorbent product was proven by the FTIR analysis. The main retention mechanism is probably the precipitation of Ca-phosphates. The sections of the phase diagram of the CaO-Al2O3-SiO2 system were prepared by the sol-gel method in order to assess the influence of acid-base properties on the adsorption capacity of slags. Excellent linear dependence of the theoretical adsorption capacity of phosphorus on the optical basicity of model slags was found that enabled an estimation of their sorption capacity.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

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

Name of the periodical

Hutnické listy

ISSN

0018-8069

e-ISSN

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Volume of the periodical

LXX

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

28-32

UT code for WoS article

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EID of the result in the Scopus database

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