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Czasopismo
2009 | 7 | 4 | 745-751
Tytuł artykułu

Synthesis of hydroxyapatite by using calcium carbonate and phosphoric acid in various water-ethanol solvent systems

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The purpose of the present study is to synthesize hydroxyapatite by using CaCO3 and H3PO4 in various water-ethanol solvent systems. It was observed from experiments that formation of ammonium phosphate compounds hindered the formation of calcium phosphates in ethanol medium. Although the reactivity was better in aqueous medium, the carbonate contents of the products obtained were above 8.5%. Best results with a carbonate content as low as 3.82% was obtained in 50% ethanol containing mixed-aqueous medium at 80°C and the FTIR analysis showed that the product was a carbonated apatite with a calculated composition of 14CaO·4.2P2O5·CO3·7.2H2O. The amorphous and porous phosphate compound obtained with a BET surface area of 106.6 m2 g−1 seems to be useful as adsorbent in wastewater treatment. Upon sintering of the amorphous product at 750°C, crystalline hydroxyapatite with a BET surface area of 25.9 m2 g−1 is obtained that may be used in biomedical applications. [...]
Słowa kluczowe
EN
Wydawca

Czasopismo
Rocznik
Tom
7
Numer
4
Strony
745-751
Opis fizyczny
Daty
wydano
2009-12-01
online
2009-10-06
Twórcy
autor
  • Faculty of Engineering, Chemical Engineering Department, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey, aengin@aku.edu.tr
  • Faculty of Engineering, Mining Engineering Department, Hacettepe University, 06800, Beytepe, Ankara, Turkey
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0063-6
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