Morphology and trace element contents of the fly ash from main and Northern lignite fields, Ptolemais, Greece

ESEM–EDX characterisation of airborne particles from an industrialised area of northern Greece

“…iron-rich Xy ash spheres). Images of Xy ash particles of the same region have been published previously (Georgakopoulos et al 1994;FernandezTuriel et al 2004;Iordanidis et al 2005). In this study, Wne dense spherical particles composed of aluminoslilicates ( Fig.…”

Properties and microstructure of lightweight aggregate produced from lignite coal fly ash and recycled glass

“…This work has characterized FA (Filippidis and Georgakopoulos 1992;Georgakopoulos et al 1994;Sakorafa et al 1996;Fytianos et al 1998;Georgakopoulos et al 2002;Arditsoglou et al 2004;Karangelos et al 2004;Koukouzas et al 2006;Skodras et al 2007) and assessed potential applications including use in cement and concrete (Papayianni and Valiasis 1991;Kouloumbi and Batis 1992;Papayianni 1993;Kouloumbi et al 1994;Malami et al 1994 There is a limit to the amount of glass cullet that can be re-used in glass production due to contamination by impurities, and therefore there is a surplus of green cullet in Greece ( 1993;Swan et al 2001;Huang et al 2007) and glass (Ducman et al 2002). Pumice is quarried primarily from the island of Gialli and this is currently the major type of lightweight aggregate used in Greece, with an annual production of ~800,000 tonnes.…”

Effects of leachant temperature and pH on leachability of metals from fly ash. A case study: Can thermal power plant, province of Canakkale, Turkey

“…The leached heavy metals from fly ash may become a hazard to the environment because of their contribution to the formation of toxic compounds. This process can lead to health, environmental and land-use problems (Davison et al 1974;Kaakinen et al 1975;Klein et al 1975;Campbell et al 1978;Wangen and Williams 1978;Gehrs et al 1979;Hansen and Fisher 1980;Hulett et al 1980;Inyang 1992;Georgakopoulos et al 1994;Fernandez-Turiel et al 1994;Laumakis et al 1996;McMurphy et al Güleç et al 2001;Georgakopoulos et al 2002a;Georgakopoulos et al 2002b;Mandal and Sengupta 2002;Baba 2000;Baba 2003;Baba et al 2003;Baba and Kaya 2004).…”