Efficiency of CO2 Dissociation in a Radio-Frequency Discharge
نویسندگان
چکیده
One possible solution to mitigating the effects of high atmospheric concentrations of carbon dioxide (CO2) is the use of a plasma source to break apart the molecule into carbon monoxide (CO) and oxygen. This work experimentally investigates the efficiency of dissociation of CO2 in a 1-kW radio-frequency (rf) plasma source operating at 13.56-MHz in a low-pressure discharge. Mass spectrometry diagnostics are used to determine the species present in the discharge, and these measurements are used to calculate the energy efficiency and conversion efficiency of CO2 dissociation in the rf plasma source. Experimental results have found that the conversion efficiency of CO2 to CO can reach values near 90%, however energy efficiency reaches a maximum of 3%. A theoretical energy cost analysis is also given as a method to evaluate the effectiveness of any plasma system designed for CO2 emissions reduction.
منابع مشابه
Kinetic Model Study of Dry Reforming of Methane Using Cold Plasma
ABSTRACT In this work, the dry reforming of methane was studied using a corona and glow discharge plasma microreactors. A chemical kinetic model was developed to understand the reaction better. The modelization allowed prediction of the reactants conversion according to the energy transfer to the gas (P×τ). The β value is trait of the energy cost, whatever this value was leeser indicated ...
متن کاملDissociation of Co2 in a Radio-frequency Plasma Source
Current dependence on fossil fuels to satisfy increasing energy needs has created an overabundance of CO2 emissions. This project aims to use a radio frequency (rf) plasma source to dissociate CO2 completely into solid carbon and gaseous oxygen to reduce CO2 concentrations in the atmosphere. An rf plasma excited by a double helix antenna with an axial magnetic field is used to create the CO2 di...
متن کاملCO2 dissociation using the Versatile atmospheric dielectric barrier discharge experiment (VADER)
Reviewed by: Michael Keidar, George Washington University, USA J. P. Sheehan, University of Michigan, USA Dissociation of CO2 is investigated in an atmospheric pressure dielectric barrier discharge (DBD) with a simple, zero dimensional (0-D) chemical model and through experiment. The model predicts that the primary CO2 dissociation pathway within a DBD is electron impact dissociation and electr...
متن کاملInvestigation of Atmospheric Pressure Plasma Source for CO2 Dissociation
This work experimentally investigates the dissociation of CO2 in an atmospheric pressure surface-wave discharge. A 2-kW microwave power supply is used to sustain the plasma contained in 1-cm-diameter quartz tube. Optical emission spectroscopy is recorded at varying axial positions along the quartz discharge tube to give evidence of the different species present. Diagnostics taken with a residua...
متن کامل