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Simultaneous Removal of NO x and SO 2 : A Promising Ag(II)/Ag(I) Based Mediated Electrochemical Oxidation System
Author(s) -
Raju T.,
Chung Sang Joon,
Pillai K. Chandrasekara,
Moon IlShik
Publication year - 2008
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.200800068
Subject(s) - flue gas , scrubber , electrochemistry , selectivity , flue , wet scrubber , chemistry , materials science , chemical engineering , process engineering , inorganic chemistry , electrode , waste management , catalysis , organic chemistry , engineering
The present study is a first attempt towards utilizing a Ag(II)/Ag(I) based mediated electrochemical oxidation (MEO) system for the simultaneous clean‐up of NO x and SO 2 gases in simulated flue gas‐air mixtures on a laboratory‐scale scrubber column integrated with an electrochemical reactor, and to rationalize the efficient application of the MEO process for flue gas abatement and pollution control. Experiments were carried out with individual gas components followed with the mixture, and the effect of input NO and input SO 2 concentrations was examined on the NO x and SO 2 removal efficiencies at 20°C. Complete oxidation of NO to NO 2 with 100% NO removal efficiency and 80% NO x removal efficiency was achieved along with 100% SO 2 removal efficiency, highlighting the potentially far greater efficiency of the Ag(II)/Ag(I) based MEO system in functionality and selectivity. Significant research work in this direction can be anticipated in the near future.
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