Spray Absorption and Electrochemical Reduction of Nitrogen Oxides from Flue Gas

被引：50

作者：

Guo, Qingbin ^{[1
]}

Sun, Tonghua ^{[1
]}

Wang, Yalin ^{[1
]}

He, Yi ^{[2
,3
]}

Jia, Jinping ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China

[2] CUNY John Jay Coll Criminal Justice, Dept Sci, New York, NY 10019 USA

[3] CUNY, Grad Ctr, New York, NY 10019 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2013年 / 47卷 / 16期

关键词：

SELECTIVE CATALYTIC-REDUCTION; NITRIC-OXIDE; AQUEOUS-SOLUTIONS; SIMULTANEOUS REMOVAL; SULFUR-DIOXIDE; NITRATE IONS; DILUTE NO; SO2; KINETICS; OXIDATION;

D O I：

10.1021/es401013f

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work developed an electrochemical reduction system which can effectively scrub NO from flue gas by using aqueous solution of Fe(II)(EDTA) (ethylenediaminetetraacetate) as absorbent and electrolyte. This new system features (a) complete decomposition of NOX to harmless N-2; 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 NOX removal efficiency. Approximately 98% NO removal was obtained at the optimal condition. The interference of SO2 in flue gas and the system operating stability was also evaluated.

引用

页码：9514 / 9522

页数：9

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