EPI-type zeolite synthesis from Greek sulphocalcic fly ashes promoted by H2O2 solutions

Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash

“…The double ring of secondary building unit (SBU) is observed to be present in the zeolite structure in the CFA, corresponding to infrared frequency, equal to 570 cm -1 . Based on the FT-IR spectrum, it can be observed that there is presence of pore openings corresponding to frequency range from 450 to 400 cm -1 in the CFA which can be attributed to the dissolution of the minerals (viz., quartz and mullite) present in the fly ash 30 . The surface functional groups from IR spectra, the broad bands provide information about the nature of the surface oxides.…”

Mineralogical Composition of Suspended Particles Pm10 in the Ptolemais-Kozani Area, Macedonia, Greece

“…The amorphous materials (organic and inorganic) are contained in the: a) mined lignite, b) fly ash, c) bottom ash, d) stack-gas ash and e) various industrial materials used by man (e.g., Kantiranis et al, 2004Kantiranis et al, , 2005Kantiranis et al, , 2006. Table 1: a) The fly ash and the bottom ash contain mainly the minerals anhydrite, calcite, quartz, mica + clays and feldspars, b) The stack-gas ash contains mainly calcite and gypsum, c) The mined lignite contains the minerals calcite, mica + clays, quartz, feldspars and gypsum, d) The rocks, sediments, intermediate steriles, soils and building materials of the FlorinaPtolemais-Kozani basin contain the minerals calcite, mica + clays, quartz and feldspars (e.g., Filippidis et al, , 1996Filippidis et al, , 1997Kassoli-Fournaraki et al, 1992, 1993Triantafyllou et al, 2000;Kolovos et al, 2002;Mouhtaris et al, 2003;Kantiranis et al, 2004Kantiranis et al, , 2005Kantiranis et al, , 2006)and e) The minerals calcite, mica + clays, quartz, feldspars and gypsum, identified as suspended particles in the Canary Islands (Spain) and the city of Volos (Greece), originate from Sahara (Africa) (e.g., Alastuey et al, 2005;Kandler et al, 2007;Coz et al, 2009;Remoundaki et al, 2011;Kantiranis et al, 2012).…”

“…The semi-quantitative estimation of the percentage of total amorphous materials was achieved by comparing the area of each broad background hump, which represented the amorphous materials in each sample, with the analogous area of standard mixtures of minerals with different contents of natural amorphous material, scanned under the same conditions. The XRPD method is a very good, effective and useful tool for the determination of the percentage of amorphous materials contained in a natural or synthetic sample (Kantiranis et al, 2004(Kantiranis et al, , 2005(Kantiranis et al, , 2006.…”

The Mineralogical Composition of Thrace Zeolitic Rocks and Their Potential Use as Feed Additives and Nutrition Supplements

“…Semiquantitative estimates of the abundance of the mineral phases were derived from the XRD data, using the intensity (counts) of certain reflections, the density and the mass absorption coefficient of the identified minerals for CuKα radiation, the software MAUD-Material Analysis Using Diffraction with the RIETVELD method. The semi-quantitative estimation of the percentage of total amorphous materials was achieved by comparing the area of each broad background hump, which represents the amorphous materials in each sample, with the analogous area of standard mixtures of minerals with different contents of natural amorphous material, scanned under the same conditions Kantiranis et al, 2004Kantiranis et al, , 2005Kantiranis et al, , 2006b). …”