Treatment of NO and NO 2 with a MgAl oxide slurry

Tomohito Kameda, Aki Kodama, Yuki Fubasami, Shogo Kumagai, Toshiaki Yoshioka

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A selective catalytic reduction process is generally used to treat NO x; however, this approach results in the leakage of ammonia and requires expensive catalysts. In light of these issues, the specific objective of this study was to develop a new treatment method for a NO x gas stream with a MgAl oxide slurry. In this study, we examined the ability of a MgAl oxide slurry to treat NO and NO 2 gas streams. The MgAl oxide slurry only partially removed the NO and NO 2. The ability of MgAl oxide to remove NO is based on the adsorption of NO molecules onto the surface of the MgAl oxide rather than the formation of an MgAl layered double hydroxide (MgAl LDH) intercalated with NO - 2. NO 2 removal was greater than NO removal because of the higher solubility of NO 2. For NO 2 removal, the MgAl oxide adsorbed NO - 2 and NO - 3 onto the surface and formed MgAl LDH intercalated with NO - 2 and NO - 3. Based on these results, we conclude that the MgAl oxide slurry is an effective treatment for NO x.

Original languageEnglish
Pages (from-to)86-91
Number of pages6
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Issue number1
Publication statusPublished - 2013 Jan 1


  • MgAl oxide slurry
  • NO
  • NO
  • treatment

ASJC Scopus subject areas

  • Environmental Engineering


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