Treatment of waste by DC arc discharge plasmas

Thermal plasma technology for the treatment of wastes: A critical review

“…It was possible to produce slag having a hard surface, inhibiting the formation of dust, although the interior was much more brittle than the surface due to the low thermal conductivity of asbestos. Additional experiments concluded that it was possible to convert asbestos into a rocklike structure (hardness of 6 Mohs) by reducing the sample thickness and melting [43,44]. Plasma treatment of asbestos resulted in a volume and weight reduction of 51% and 70%, respectively.…”

Advantages and Disadvantages of Healthcare Waste Treatment and Disposal Alternatives: Malaysian Scenario

“…Also, it is an environmentally friendly technology that transforms organic waste into useful products [41], and it is another type of thermal parsing of carbonaceous materials in oxygen. Plasma pyrolysis technology needs two chambers installed so that the primary chamber takes place at a high temperature of 1,100ºC and secondary chamber ignition takes place at 950 to 1,000ºC [42].…”

Development of a laboratory scale air plasma torch and its application to electronic waste treatment

“…Inaba et al (1998) developed a laboratory scale, 60 kW DC arc plasma torch using argon as working gas and applied it to melt fly ash into a glassified slag. Inaba and Iwao (2000) further utilized a plasma torch to treat wastes, and discussed aspects of plasma processes in the destruction and removal of mixed wastes and hazardous wastes. Uhm and Hong (2000) developed a simple model to simulate physics of plasma torch and used the model to investigate an arc plasma system for waste treatment.…”