Diesel exhaust treatment by a combination of non‐thermal plasma with Nano‐CeO2 supported on the wood fiber filter.

In order to reduce the emissions of pollutants from diesel exhaust, a kind of exhaust purification technology by the combination of non‐thermal plasma (NTP) with Nano‐CeO2 supported on the micro‐wood fiber filter is proposed, and a simulation test bench is designed to test the influence factors of purification efficiency. It can be seen from the simulation experiments, the purification efficiency for particulate matter (PM) and NOx can be enhanced from 37 and 28% to 53 and 38% when the content of Nano‐CeO2 is from 0 to 16.92 wt%. The test results also show that the purification efficiency of PM and NOx increases with the rising of temperature between 40 and 160°C. Furthermore, when the mass of PM is no more than 30 mg, the purification efficiency of PM and NOx increases with the rising of PM mass. At last, the experiment shows that when the input voltage is between 6 and 12 kV, the corresponding purification efficiency increases with the rising of voltage. Temperature 160°C, catalyst 16.92 wt%, input voltage 12 kV, and PM 30 mg are the best experimental conditions for this study, in which the corresponding purification of PM and NOx is 66 and 53%, respectively. This can provide an experimental basis for the practical application of NTP and wood fiber filters in the field of exhaust gas purification. [ABSTRACT FROM AUTHOR]