Abstract
Herein, a novel process of diesel exhaust purification by non-thermal plasma combined with wood fiber has been investigated to understand the effect of purification efficiency on the emission. The dielectric barrier discharge (DBD) and wood fiber (WF) improved removal efficiency of nitrogen oxide (NOx) owing to the positive activity of oxygen-containing functional groups (such as O–H groups or C–O groups) on the wood surface, which promoted the removal of NOx by 10%–13%. The mechanism to remove NOx in the presence of wood fibers was also deduced through FTIR spectra. When carbon black was loaded on the wood fiber, there was simultaneous removal of carbon soot and NOX. Although complete purification was not achieved, a high purification efficiency was obtained under the conditions of room temperature and no catalysts. These advantages highlight the importance of use of wood and non-thermal plasma (NTP), and this research work opens new avenues in the field of emissions treatment.
Highlights
Diesel engines are increasingly used worldwide due to their compact size, low operating costs, and higher thermal efficiency than gasoline engines
Various related technologies that have been developed in recent years include diesel oxidation catalysts (DOCs) [2,3,4,5], diesel particulate filters (DPFs) [6,7,8], catalytic-diesel particulate filters (CDPFs) [9,10,11,12,13], and selective catalytic reduction (SCR) [14,15], all of which add certain advantages to previous technologies
The effects of wood fiber combined with non-thermal plasma on decrease in nitrogen oxide (NOx) and particulate matter (PM)
Summary
Diesel engines are increasingly used worldwide due to their compact size, low operating costs, and higher thermal efficiency than gasoline engines Their emissions consist of NOx , CO, CO2 , hydrocarbons (HCs), formaldehyde (PAH), and particulate matter (PM). Various related technologies that have been developed in recent years include diesel oxidation catalysts (DOCs) [2,3,4,5], diesel particulate filters (DPFs) [6,7,8], catalytic-diesel particulate filters (CDPFs) [9,10,11,12,13], and selective catalytic reduction (SCR) [14,15], all of which add certain advantages to previous technologies. The CDPF is still troublesome with regards to practical applications in diesel engines, namely, the challenge of activating catalysts at low-temperatures as well as high catalyst costs due to the use of noble metals (Pt-Pd, NiAlO, LaCoO3 , and CoCeO) [11,12,13]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
