Carbon dioxide elimination and regeneration of resources in a microwave plasma torch

Environmental Pollution
Han S UhmYong C Hong

Abstract

Carbon dioxide gas as a working gas produces a stable plasma-torch by making use of 2.45 GHz microwaves. The temperature of the torch flame is measured by making use of optical spectroscopy and a thermocouple device. Two distinctive regions are exhibited, a bright, whitish region of a high-temperature zone and a bluish, dimmer region of a relatively low-temperature zone. The bright, whitish region is a typical torch based on plasma species where an analytical investigation indicates dissociation of a substantial fraction of carbon dioxide molecules, forming carbon monoxides and oxygen atoms. The emission profiles of the oxygen atoms and the carbon monoxide molecules confirm the theoretical predictions of carbon dioxide disintegration in the torch. Various hydrocarbon materials may be introduced into the carbon dioxide torch, regenerating new resources and reducing carbon dioxide concentration in the torch. As an example, coal powders in the carbon dioxide torch are converted into carbon monoxide according to the reaction of CO2 + C → 2CO, reducing a substantial amount of carbon dioxide concentration in the torch. In this regards, the microwave plasma torch may be one of the best ways of converting the carbon dioxides into usefu...Continue Reading

References

Nov 22, 1996·Science·J L Sarmiento, Le Quéré C
Mar 11, 2000·Scientific American·H HerzogO Kaarstad
May 12, 2001·Environmental Science & Technology·H J Herzog

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Citations

Aug 24, 2017·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Danhua Mei, Xin Tu
Dec 30, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ming-Hsien HsuehJo-Hung Yu

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