- Tytuł:
- Pyromorphite formation from montmorillonite adsorbed lead
- Autorzy:
-
Bajda, T.
Marchlewski, T.
Manecki, M. - Powiązania:
- https://bibliotekanauki.pl/articles/2086540.pdf
- Data publikacji:
- 2011
- Wydawca:
- Polskie Towarzystwo Mineralogiczne
- Tematy:
-
sorption
desorption
immobilization
crystallization
apatite
smectite - Opis:
- The reaction of Pb-adsorbed montmorillonite with aqueous solutions of PO4 and Cl ions results in the decrease in phosphate concentration associated with the formation of a new phase – pyromorphite Pb5(PO4)3Cl. Pyromorphite crystals range in size from hundreds of nm to several tens of μm, depending on the PO4, K, and Ca concentrations in the reacting system. A strong ion-exchange effect of K+ and Ca2+ cations on desorption of Pb2+ from Pb-adsorbed montmorillonite was observed. Also, a high concentration of cations leads to a rapid desorption of Pb and the formation of fine pyromorphite crystals. In contrast, low PO4, K and Ca concentrations result in the formation of relatively large euhedral crystals. Final Pb concentrations are much lower in experimental sets than in control experiments with no phosphate present.
- Źródło:
-
Mineralogia; 2011, 42, 2/3; 75--91
1899-8291
1899-8526 - Pojawia się w:
- Mineralogia
- Dostawca treści:
- Biblioteka Nauki
Artykuł