Zeolites formation by hydrothermal alkali activation of coal fly ash from thermal power station “Maritsa 3”, Bulgaria

A Shoumkova, V Stoyanova - Fuel, 2013 - Elsevier
Fly ash from lignite coal burning was subjected to a hydrothermal activation with NaOH and
KOH (1.5÷ 12.5 m) under different heating regimes to investigate zeolites formation …

[PDF][PDF] A comparative study on the zeolitization of coal fly ash from TPP “Maritsa 3” with KOH and NaOH

A Shoumkova, V Stoyanova, T Tsacheva… - 11th International …, 2011 - researchgate.net
ABSTRACT A comparative study on the zeolitization of coal fly ash from thermo-power plant
“Maritsa 3”(Dimitrovgrad) with KOH and NaOH solutions of different concentrations has been …

Heavy and toxic elements distribution in magnetically separated fractions from coal fly ashes

A Shoumkova, V Stoyanova - … Scientific GeoConference: SGEM, 2010 - search.proquest.com
The analytical results for the concentration of about 50 elements in magnetic fractions,
obtained by wet low intensity magnetic separation of fly ashes from six coal burning power …

SEM-EDX identification of particles from fog in an industrially polluted region of Czech Republic

V Stoyanova, A Shoumkova, J Fisak… - International …, 2010 - search.proquest.com
The properties of individual particles, rather than bulk aerosol characteristics, determine the
environmental and health impact of the atmospheric pollutants. Single particles have been …

[PDF][PDF] CHARACTERIZATION AND ENVIRONMENTAL IMPACT OF FINE FLY ASH PARTICLES

V Stoyanova, A Shoumkova, A Miteva - SES 2017 - space.bas.bg
Fine dust and ash particles (less than 10 μm) pose a serious risk to the environment and
human health. A few million tons are only the fly ashes generated annually by the thermal …