Effect of High-Voltage Nanosecond Pulses and Dielectric Barrier Discharges on the Structural State and Physicochemical Properties of Ilmenite Surfaces

2021 ◽  
Vol 85 (9) ◽  
pp. 974-978
Author(s):  
I. Zh. Bunin ◽  
V. A. Chanturiya ◽  
N. E. Anashkina ◽  
E. V. Koporulina ◽  
G. K. Khachatryan
Keyword(s):  
Physicochemical Properties ◽  
High Voltage ◽  
Structural State ◽  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Nanosecond Pulses ◽  
Barrier Discharges

scholarly journals Comparative study on high-voltage nanosecond pulses and dielectric barrier discharge effects on surface morphology and physico-chemical properties of natural pyrrhotite

2021 ◽  
Vol 2064 (1) ◽  
pp. 012056
Author(s):  
I Zh Bunin ◽  
I A Khabarova
Keyword(s):  
Surface Morphology ◽  
Physicochemical Properties ◽  
Dielectric Barrier Discharge ◽  
High Voltage ◽  
Electrode Potential ◽  
Barrier Discharge ◽  
Analytical Electron Microscopy ◽  
Temperature Plasma ◽  
Dielectric Barrier ◽  
Nanosecond Pulses

Abstract In this paper we used analytical electron microscopy, potentiometric titration (electrode potential), sorption and flotation measurements and other methods to study changes in the surface morphology, electrochemical, and physicochemical properties of the natural pyrrhotite exposed to nonthermal action of the repetitive nanosecond high-power electromagnetic pulses and low-temperature plasma of dielectric barrier discharge in air at atmospheric pressure. As a result of exposure to high-voltage nanosecond pulses, a sharp shift in the electrode potential of pyrrhotite to the region of negative values caused a decrease in the sorption of the anionic collector on the mineral, a decrease in the hydrophobicity of the surface and flotation of the mineral was due to an increase in the content of oxidized ferric iron on the mineral surface. Dielectric barrier discharge treatment caused the shift of the electrode potential to the region of negative values (–60 mV) in the range of pH 9.7-12, which causes the effect of a decrease in the sorption and flotation activity of pyrrhotite. The advantages of using the short-term (10-30 seconds) energy impacts for structural and chemical modification of the surface and physicochemical properties of sulfide minerals of iron are shown.

Analysis of parameters of coaxial dielectric barrier discharges in argon flow at atmospheric pressure

2021 ◽  
Vol 129 (15) ◽  
pp. 153305
Author(s):  
Hui Li ◽  
Chengxun Yuan ◽  
Anatoly Kudryavtsev ◽  
Aleksandr Astafiev ◽  
Evgeny Bogdanov ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Argon Flow ◽  
Barrier Discharges

Degradation of glucocorticoids in water by a synergistic system of peroxymonosulfate, microbubble and dielectric barrier discharges

2021 ◽  
Vol 42 ◽  
pp. 102175
Author(s):  
Andere Clement Miruka ◽  
Ai Zhang ◽  
Qiancheng Wang ◽  
Dahai Zhu ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Barrier Discharges
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