Influence of Contaminants on Arc Properties during Treatment of Polluted Soils in Electric Arc Plasma

AbstractOne of the most effective method of contaminated soil utilization is thermal plasma arc treatment. Assuming that electric arc is immersed under the ground level - it is placed only in mineral atmosphere. Components from utilized soil are the source of these minerals. A furnace with the immersed arc-plasma has been elaborated for solid waste treatment purposes. To establish the influence of particular minerals on the discharge, a model where particular elements can penetrate the arc plasma channel has been made. The discharge takes place in a mineral atmosphere, similarly to the immersed arc plasma waste utilization. Subsequently, the arc temperature was measured. A measurement based on the two spectral lines method with Abel inversion, independent of the plasma chemistry was used. A new utilization method of soil wastes using an immersed arc with efficiency up to 98% has been described. Experimental results from the research has been presented and mineral plasma composition has been calculated and compared.

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Municipal Solid Waste Treatment Using Plasma Gasification with the Potential Production of Synthesis Gas (Syngas)

ICONIET PROCEEDING ◽

10.33555/iconiet.v2i1.4 ◽

2019 ◽

Vol 2 (1) ◽

pp. 8-12

Author(s):

Angela Hartati ◽

Diah Indriani Widiputri ◽

Arbi Dimyati

Keyword(s):

Waste Treatment ◽

Composition Analysis ◽

Energy Agency ◽

Plasma Gasification ◽

Gasification Process ◽

Solid Waste Treatment ◽

Pre Treatment ◽

Waste Separation ◽

Gasification Efficiency ◽

Arc Plasma Torch

This research was conducted for the purpose to overcome Indonesia waste problem. The samples are classified into garden waste, paper waste, wood, food waste, and MSW with objective to identify which type of waste give out more syngas since there is waste separation in Indonesia. All samples were treated by plasma gasification without pre-treatment (drying). Arc plasma torch used in this experiment was made by National Nuclear Energy Agency (BATAN) and used Argon as the gas source. Then the torch was connected to self-designed gasification chamber and gas washing system before injected into a gas bas for composition analysis. Another objective is to identify factors that may affect the gasification efficiency and the experiment shows that moisture content is not really affecting the efficiency but the duration of the process. The mass reduction of each samples were recorded, then the gas produced from the gasification process were analyzed. The result shows that food has the highest mass percentage reduced and producing the highest amount of hydrogen amongst other samples. However, treating MSW also produce considerably high amount of hydrogen. In conclusion, MSW direct treatment (without separation) using plasma gasification is feasible since it still produces desirable quality of syngas.

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Dhaka City Solid Waste Treatment for Saving the Surface Water

Modern Environmental Science and Engineering ◽

10.15341/mese(2333-2581)/05.02.2016/004 ◽

2016 ◽

Vol 2 (05) ◽

pp. 312-320

Author(s):

Mohammad Asaduzzaman ◽

June-ichiro Giorgos Tsutsumi ◽

Ryo Nakamatsu ◽

Shokory Jamal Abdul Naser

Keyword(s):

Surface Water ◽

Solid Waste ◽

Waste Treatment ◽

Dhaka City ◽

Solid Waste Treatment

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1449 - A new small-scale composter for urban organic solid waste treatment

10.26226/morressier.5b5199c3b1b87b000ecf00c6 ◽

2018 ◽

Author(s):

Alex Jaimes Castillo

Keyword(s):

Solid Waste ◽

Waste Treatment ◽

Small Scale ◽

Organic Solid Waste ◽

Organic Solid ◽

Solid Waste Treatment

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Plasma parameters in atomic-emission spectral analysis of phosphate concentrates of the fission products

Industrial laboratory Diagnostics of materials ◽

10.26896/1028-6861-2019-85-2-17-22 ◽

2019 ◽

Vol 85 (2) ◽

pp. 17-22

Author(s):

M. I. Khamdeev ◽

E. A. Erin

Keyword(s):

Spectral Analysis ◽

Chemical Composition ◽

Reference Materials ◽

Fission Products ◽

Atomic Emission ◽

Electric Arc ◽

Physical Parameters ◽

Arc Plasma ◽

Atomic Emission Spectral Analysis ◽

Excitation Processes

Physical parameters of electric arc plasma as well as their time dependences are calculated when analyzing phosphate precipitates of the fission products of irradiated nuclear fuel. Phosphate concentrates of the fission products are known for their complex chemical composition and high thermal and chemical stability. Hence, direct atomic emission spectral analysis of phosphate powders without transferring them into solutions is advisable. Different conditions of sample preparation and synthesis of the reference materials determine the different chemical forms of the elements to be determined. This, in turn, affects the kinetics of their evaporation in the electrode crate and excitation processes in the plasma. The known mechanisms of those processes cannot always be transferred to specific conditions of the given method of analysis thus entailing the necessity of studying the effect of the samples chemical composition on the results of determination, proper choice of spectroscopic carriers, detailed study of spectra excitation processes in spectral analysis, and analysis of the physical parameters of the electric arc plasma. We used the lines Zn I 307.206 nm and Zn I 307.589 nm to measure the effective temperature of the central hot sections of the arc in a range of4500 - 6500 K. NaCl, BaCl2 and NaCl + T1C1 were studied to reduce the effect of the sample elemental composition on excitation conditions of the spectra and their stabilization as a spectroscopic carrier. In control experiments we used carrier-free samples. The coincidence of the values of the plasma physical parameters within the measurement error not exceeding 20%, as well as the identity of the nature of the kinetic curves for samples of phosphate precipitates and synthetic reference materials prove their correctness. The result of the study substantiate correctness of the direct atomic-emission spectral procedure in analysis of phosphate concentrates of fission when using synthetic reference materials.

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