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Mineralogical study of zeolites from Pentalofos area, Thrace, Greece

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Mineralogical study of zeolites from Pentalofos area, Thrace, Greece (EN)
Perraki, Th (EN)
Orfanoudaki, A (EN)
journalArticle (EN)
2014-03-01T01:21:03Z
2004 (EN)
The zeolites of the Pentalofos area, Thrace, Greece, were studied by optical microscopy, X-ray diffraction (XRD) and Fourier Transform IR (FTIR) spectroscopy, in combination with thermoanalytical methods (thermogravimetric analysis (TG/ DTG) and differential thermal analysis (DTA)). Their main mineral constituent (>90%) is "heulandite type-II", an intermediate type of the isomorphous series heulandite-clinoptilolite end members. Feldspars, muscovite, biotite, quartz, and cristobalite were also detected. Traces of smectite were found in only few samples. The cation exchange capacity (CEC) of the Pentalofos zeolites (119 to 152 meq/100 g), as well as their low temperature dehydration behavior (during heating up to 350 degreesC, 15 of similar to 22 molecules H2O are removed) are also characteristic for an intermediate member of the heulandite-clinoptilolite zeolite ("heulandite type-II"). These properties make them a powerful toot in the decontamination of waters and soils, in agriculture, in cement industry, etc. Moreover, this zeolite deposit is of a great economic interest, considering that it is the richest among the zeolite formations in Northeastern Greece (4.7 x 10(6) tons, with a zeolite content higher than 90%). (C) 2003 Elsevier B.V. All rights reserved. (EN)
Mineralogy (EN)
cation exchange capacity (EN)
Eurasia (EN)
Mineralogy (EN)
mineralogy (EN)
XRD (EN)
Dehydration (EN)
Zeolites (EN)
Positive ions (EN)
pollutant removal (EN)
X ray diffraction analysis (EN)
Optical microscopy (EN)
heulandite (EN)
TG/DTG/DTA (EN)
FTIR (EN)
Cements (EN)
Ion exchange (EN)
CEC (EN)
Thrace (EN)
Heulandite (EN)
Thermogravimetric analysis (EN)
Cation exchange capacity (CEC) (EN)
Differential thermal analysis (EN)
Isomorphous materials (EN)
zeolite (EN)
Fourier transform infrared spectroscopy (EN)
Applied Clay Science (EN)
English
ELSEVIER SCIENCE BV (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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