Removal of benzene as a tar model compound from a gas mixture using non-thermal plasma dielectric barrier discharge reactor. (June 2021)

• Record Type: Journal Article
• Authors: Saleem, Faisal; Khoja, Asif Hussain; Umer, Jamal; Ahmad, Farhan; Abbas, Syed Zaheer; Zhang, Kui; Harvey, Adam
• Is Part Of: Journal of the Energy Institute. Volume 96(2021)
• Page Start: 97
• Page End: 105
• Publication Date: 2021-06
• Subjects: Non-thermal plasma -- Biomass gasification tar -- Dielectric barrier discharge -- Benzene; Power (Mechanics) -- Periodicals; Power resources -- Periodicals; Fuel -- Periodicals; 621.04205
• DOI: 10.1016/j.joei.2021.02.008
• Languages: English
• ISSNs: 1743-9671

Abstract

Abstract: In the present work, the decomposition of benzene as a tar model compound was studied in a gas mixture (CO2, H2, CO, and CH4 ) using a dielectric barrier discharge (DBD) non-thermal plasma reactor. The combined effect of temperature and power was studied to investigate the performance of the DBD reactor. The decomposition of tar compound increased from 49.9 to 96% with increasing specific input energy (SIE) from 2.05 to 16.4 kWh/m 3 . The major products were lower hydrocarbons (C2 –C5 ) and solid residues. The higher temperature (400 °C) in the presence of plasma (40 W), decreased the conversion of tar compound from 96 to 78%. However, the selectivity of lower hydrocarbons increases substantially to 52%, and the formation of solid residues is significantly reduced. Hence, the problematic solid residues formation can be controlled at a higher temperature during the treatment of gasifier product gas using non-thermal plasma. Graphical abstract: Image 1 Highlights: Decomposition of benzene was carried out using a DBD reactor. The presence of methane in a carrier gas increased the selectivity to C2 –C5 . Formation of solid residues significantly reduced at 400 °C. The highest selectivity to C2–C5 was 52% at 40 W and 400 °C.