Nanobiotechnology and chemical technology
Prospects of extraction of nanoparticles of noble and rare earth elements from coal ash
A.A. Khlopytskyi1, A.S. Savenkov2, A.S. Didkovska1, Y.O. Derevianko1, 
Y.V. Oksamytna1
1 Department of Inorganic matters technology and ecology, Ukrainian State University of Chemical Technology. 8 Gagarin Ave., Dnipropetrovsk, Ukraine. 
E-mail: email.of. corresponding_hapits@yandex.ua
2 Department of Chemical technology of inorganic substances, catalysis and ecology, National Technical University "Kharkiv Polytechnic Institute", 21 Kirpichev Str., Kharkiv, Ukraine.

Тhe development of society and increased production, leads to an increase in the amount of waste. Particular attention is paid to slag waste, since nowadays most of the electricity produced at power plants [1]. Every year in our country more than 8 million tons of coal ash are produced, a huge amount of which is processed without a useful purpose.
Since coal is a natural sorbent, it contains a lot of impurities of components of particular interest, nanoparticles of rare earth elements and noble metals. As a result of coal combustion, their content often increases by 5-6 times. With development of knowledge-intensive industries and technology development, the demand for these materials is growing every day. The isolation of nanoparticles of rare earth and noble metals from the waste of thermal power plants can serve as an alternative to natural elements whose resources are constantly decreasing. In our time, most of the coal ash is used as a filler in the construction industry, but the most promising direction is still the removal of nanoparticles of valuable components from slag [2].
Such metals as terbium, europium, neodymium, yttrium and dysprosium are in great demand. These elements are widely used in electronics, medicine, atomic energy, aerospace, and others. Therefore, removing them from waste will significantly reduce the cost of producing certain products and save natural resources.
1.	Hlopitskiy A. A. Status, problems and prospects of processing of ash and slag waste of thermal power plants of Ukraine // Scientific Journal "ScienceRise".-2014.-Vol.4/2(4).-P. 23-28.
2.	Hlopitskiy А.A. Study of Complex Recovery of Solid Slag Waste from Thermal Power Plants in Target Components // Chemical and Materials Engineering, 2015.–Vol.3(1).-P. 1-5.