Spray Absorption and Electrochemical Reduction of
Nitrogen Oxides from Flue Gas
Qingbin Guo
Tonghua Sun
Yalin Wang
Yi He
Jinping Jia
10.1021/es401013f.s001
https://acs.figshare.com/articles/journal_contribution/Spray_Absorption_and_Electrochemical_Reduction_of_Nitrogen_Oxides_from_Flue_Gas/2385046
This work developed an electrochemical
reduction system which can
effectively scrub NO<sub>×</sub> from flue gas by using aqueous
solution of Fe(II)(EDTA) (ethylenediaminetetraacetate) as absorbent
and electrolyte. This new system features (a) complete decomposition
of NO<sub><i>X</i></sub> to harmless N<sub>2</sub>; and
(b) fast regeneration of Fe(II)(EDTA) through electrochemical reaction.
The Fe(II)(EDTA) solution was recycled and reused continuously during
entire process, and no harmful waste was generated. The reaction mechanism
was thoroughly investigated by using voltammetric, chromatographic
and spectroscopic approaches. The operating conditions of the system
were optimized based on NO<sub><i>X</i></sub> removal efficiency.
Approximately 98% NO removal was obtained at the optimal condition.
The interference of SO<sub>2</sub> in flue gas and the system operating
stability was also evaluated.
2013-08-20 00:00:00
Fe
electrochemical reduction system
NOX removal efficiency
Flue GasThis work
solution
flue gas