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Diesel particulate matter and NO x removals using a pulsed corona surface discharge
Author(s) -
Yao S.,
Okumoto M.,
Yashima T.,
Shimogami J.,
Madokoro K.,
Suzuki E.
Publication year - 2004
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10066
Subject(s) - corona discharge , analytical chemistry (journal) , dielectric barrier discharge , particulates , materials science , anode , cathode , adsorption , nonthermal plasma , atmospheric pressure , desorption , chemistry , dielectric , electrode , plasma , chromatography , optoelectronics , physics , organic chemistry , quantum mechanics , oceanography , geology
A pulsed corona surface discharge (PCSD) system was established for particulate matter (PM) and NO x removals from a diesel engine. The PCSD was carried out with a dielectric barrier discharge (DBD) reactor and a pulse power supply at atmospheric pressure and room temperature. The DBD reactor consisted mainly of an alumina (Al 2 O 3 ) tube and a stainless steel rod (cathode) inserted in the alumina tube, and an aluminum coil (anode) wound on the outside surface of the Al 2 O 3 tube. Pulse voltage was applied to the outside Al coil and stainless steel rod. PM was removed at a rate of 89% at maximum with 40% NO x removal. Relations of pulse voltage and frequency to PM and NO x removals were investigated. PM was oxidized by NO 2 and other kinds of active oxygen species, such as O and O 3 from plasma discharges. A surface adsorption/desorption and PM oxidation model of PM removal was established. The kinetic equations and their constants were given. © 2004 American Institute of Chemical Engineers AIChE J, 50:715–721, 2004