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Research Article
ScienceAsia 25 (1999) : 057-063 |doi: 10.2306/scienceasia1513-1874.1999.25.057
Removal of Trimethylamine and Ammonia
Using Electron Attachment Reaction
Wiwut Tanthapanichakoona, Paisarn Khongprasarnkalna, Tawatchai Charinpanitkula,
Hajime Tamonb, Noriaki Sanoc and Morio Okazakid
ABSTRACT: Experimental investigation on the application of electron attachment reaction to the removal
of dilute gaseous pollutants has been carried out using a corona-discharge reactor. The effects of several
factors, namely, discharge current and coexisting O2 or H2 O vapor on individual removal efficiency of
two kinds of gaseous pollutants, namely, trimethylamine ((CH3)3N) and ammonia (NH3) have been
investigated. The role of ozonation reaction is next investigated using two reactors in series. In addition,
a two-reactor system is proposed and shown to remove both (CH3)3N and SO2 with less by-products.
The experimental results reveal that generally the higher the discharge current, the higher the removal
efficiency. It is found that the presence of O2 enhances the removal efficiency of both impurity gases. On
the other hand, the presence of water vapor enhances the removal efficiency of (CH3)3N but retards that
of NH3.
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School of Energy and Materials, King Mongkut's University of Technology Thonburi, Suksawat 48 Road, Bangkok 10140, Thailand.
a Department of Chemical Engineering, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand.
b Department of Chemical Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
c Department of Chemical Engineering, Himeji Institute of Technology, Himeji 671-2201. Japan.
d Kyoto Polytechnic College, Maizuru, Kyoto 624, Japan.
Received 25 Feb 1999
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