Processing of industrial waste by plasma-chemical method

In this paper, the results of the processing of magnesium fluoride by plasma-chemical method to obtain periclase and a solution of hydrogen fluoride (hydrofluoric acid) were presented. For the industrial implementation of plasma technologies, it is necessary to study the main parameters of plasma processes for obtaining reducing gases and processing metal oxides with them, to solve the issues of their hardware design, to increase the service life of plasma torches for their use in continuous metallurgical processes. The purpose of this work was to determine the conditions for the plasma-chemical process of processing magnesium fluoride. Thermal analysis of magnesium fluoride on a TGA/DSC2 thermogravimetric analyzer was performed. Thermogravimetric analysis showed that in the temperature range under consideration the process is endothermic, and at a temperature of ~1280°C a phase transition of the 1st kind is observed due to the melting of magnesium fluoride. The fractional composition of MgF2 and MgO powders was studied using the Analysette-22 Nanotech laser diffraction analyzer. The results of the evaluation of the fractional composition of powders have a significant difference. At the same time, the convergence of the data obtained using laser diffraction and electron microscopy methods was found.

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Ecological Assessment of Particulate Material (PM5 and PM10) in Urban Habitats

Atmosphere ◽

10.3390/atmos11060559 ◽

2020 ◽

Vol 11 (6) ◽

pp. 559 ◽

Cited By ~ 1

Author(s):

Edina Simon ◽

Vanda Éva Molnár ◽

Béla Tóthmérész ◽

Szilárd Szabó

Keyword(s):

Gravimetric Method ◽

Diffraction Method ◽

Biological Indicators ◽

Laser Diffraction ◽

Particulate Material ◽

Diffraction Measurement ◽

Tree Leaves ◽

Dust Deposition ◽

Positive Correlation ◽

Significant Difference

Trees are especially useful biological indicators. We tested the suitability of tree leaves (Common Lime) to assess PM5 and PM10 deposition in the three summer months of 2018 in Debrecen city, Hungary. We also tested the usefulness of the cheap and simple gravimetric method to assess the PM deposition, and compared to the expensive, but standard laser diffraction method. We found significant differences between the concentrations of PM10 deposited on tree leaves, and on dust traps. A significant difference was found in the concentration of PM5 only in July. A significant difference was also found in the concentration of PM10 among months based on leaves and dust traps. For PM5 there was a significant difference among months based on leaves deposition. We found a significant positive correlation between the PM10 concentration deposited on leaves and on dust traps. A positive correlation was found between the concentration of PM based on the gravimetric and laser diffraction measurement methods. Our findings pointed out the particulate material’s washing by rain from leaves; thus, dust deposition on the surface of leaves is limited. Our results demonstrated that trees play an important role in the mitigation of air pollution, and they are a useful indicator of PM deposition for biomonitoring studies.

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Pt/C Powders Synthesized by Plasma Chemical Method and their use as Fuel Cell Electrode Catalyst

ECS Meeting Abstracts ◽

10.1149/ma2006-02/1/19 ◽

2006 ◽

Keyword(s):

Fuel Cell ◽

Chemical Method ◽

Plasma Chemical ◽

Fuel Cell Electrode ◽

Cell Electrode

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Optical properties of SixTiyCzOw composite nanopowder obtained by pulsed plasma chemical method

Journal of Physics Conference Series ◽

10.1088/1742-6596/1115/2/022029 ◽

2018 ◽

Vol 1115 ◽

pp. 022029

Author(s):

G Kholodnaya ◽

F Konusov ◽

R Sazonov ◽

D Ponomarev ◽

M Kaikanov

Keyword(s):

Optical Properties ◽

Chemical Method ◽

Pulsed Plasma ◽

Plasma Chemical

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Plasma-chemical method for producing metal oxide powders and their application

Journal of Physics Conference Series ◽

10.1088/1742-6596/652/1/012027 ◽

2015 ◽

Vol 652 ◽

pp. 012027 ◽

Cited By ~ 2

Author(s):

I Zhukov ◽

S Vorozhtsov ◽

V Promakhov ◽

I Bondarchuk ◽

A Zhukov ◽

...

Keyword(s):

Metal Oxide ◽

Chemical Method ◽

Plasma Chemical ◽

Oxide Powders

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Pyrolysis of vacuum resid by the plasma chemical method

Chemistry and Technology of Fuels and Oils ◽

10.1007/s10553-006-0051-x ◽

2006 ◽

Vol 42 (3) ◽

pp. 172-175

Author(s):

G. G. Garifzyanova ◽

G. G. Garifzyanov

Keyword(s):

Chemical Method ◽

Vacuum Resid ◽

Plasma Chemical

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Obtaining the nanosized particles from aqueous solution of silver by plasma chemical method

Technology audit and production reserves ◽

10.15587/2312-8372.2015.47714 ◽

2015 ◽

Vol 4 (4(24)) ◽

pp. 30

Author(s):

Ольга Вячеславовна Сергеева ◽

Александр Андреевич Пивоваров

Keyword(s):

Aqueous Solution ◽

Chemical Method ◽

Nanosized Particles ◽

Plasma Chemical

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Plasma way to obtain ultrafine iron and aluminum oxides

Applied Physics ◽

10.51368/1996-0948-2021-3-00-71 ◽

2021 ◽

pp. 66-71

Author(s):

Alekcey Safronov ◽

Vladimir Kuznetsov ◽

Juliy Dudnik ◽

Vasiliy Shiryaev ◽

Olga Vasilieva

Keyword(s):

Chemical Synthesis ◽

Metal Oxides ◽

Experimental Studies ◽

Ultrafine Powders ◽

Plasma Chemical ◽

Aluminum Oxides ◽

Plasma Chemical Synthesis ◽

Plasma Torches ◽

Nanosized Oxide ◽

Iron And Aluminum Oxides

The paper deals with two plasma-chemical synthesis installations based on alternating cur-rent plasma torches with power up to 30 kW, which can be used for production of ultrafine (nanosized) oxide and carbide materials. Some results obtained during experimental studies on the production of ultrafine powders of metal oxides (iron and aluminum) are presented.

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