Beilstein J. Nanotechnol.2017,8, 1043–1048, doi:10.3762/bjnano.8.105
, Saudi Arabia 10.3762/bjnano.8.105 Abstract Flyash from power plants is very toxic because it contains heavy metals. In this study flyash was treated with a thermal plasma. Before their treatment, the flyash was analyzed by many technics such as X-ray fluorescence, CHN elemental analysis, inductively
coupled plasma atomic emission spectroscopy and scanning electron microscopy. With these technics, the composition, the chemical and physical proprieties of flyash are determined. The results obtained by these analysis show that flyash is mainly composed of carbon, and it contains also sulfur and metals
such as V, Ca, Mg, Na, Fe, Ni, and Rh. The scanning electron microscopy analysis shows that flyash particles are porous and have very irregular shapes with particle sizes of 20–50 μm. The treatment of flyash was carried out in a plasma reactor and in two steps. In the first step, flyash was treated