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Degradation of CO 2 through dielectric barrier discharge microplasma
Author(s) -
Duan Xiaofei,
Li Yanping,
Ge Wenjie,
Wang Baowei
Publication year - 2015
Publication title -
greenhouse gases: science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.45
H-Index - 32
ISSN - 2152-3878
DOI - 10.1002/ghg.1425
Subject(s) - microplasma , dielectric barrier discharge , volumetric flow rate , carbon dioxide , degradation (telecommunications) , carbon fibers , plasma , analytical chemistry (journal) , carbon monoxide , materials science , energy conversion efficiency , chemistry , work (physics) , atmosphere (unit) , environmental science , chemical engineering , environmental chemistry , dielectric , optoelectronics , electrical engineering , meteorology , thermodynamics , composite material , organic chemistry , catalysis , physics , quantum mechanics , composite number , engineering
The continually increasing use of fossil fuels throughout the world has caused carbon dioxide (CO 2 ) concentration to grow rapidly in the atmosphere. Increasing CO 2 emissions are the major cause of global warming, and a number of studies have been done to show the predicted effects of global warming. This paper reported a method of degradation of CO 2 through dielectric barrier discharge (DBD) plasma; a microplasma reactor was used to decompose CO 2 into carbon monoxide (CO) at normal atmosphere and room temperature. Gas chromatography was used to analyze the compositions of the outlet gases. No carbon deposits were found in this work. A variety of parameters, such as feed flow rate, input power, frequency, discharge gap, and external electrode length were investigated. The effects of these parameters on CO 2 conversion were examined. At the same time, the effects of feed flow rate and input power on the energy efficiency were studied. The results indicated that a higher conversion of CO 2 can be realized with a lower feed flow rate, a limited higher input power and a lower frequency. However, a higher feed flow rate and a lower input power were beneficial for energy utilization. The discharge gap had a little effect on the conversion of CO 2 in microplasma reactor. In this work, the highest conversion of CO 2 was 18.0%, and the highest energy efficiency was 3.8%. The DBD microplasma is a promising method for decomposing CO 2 .© 2014 Society of Chemical Industry and John Wiley & Sons, Ltd