Two-Staged Dielectric Barrier Discharge-Urea Configuration for the Removal of NO of NO x in a Simulated Coal-Combustion Flue Gas

Huang Jingyu; Prince Atta Opoku; Li Junwei; Eyram Norgbey; Emmanuel Hagan Brown

doi:10.1007/s11270-019-4165-2

Two-Staged Dielectric Barrier Discharge-Urea Configuration for the Removal of NO of NO_x in a Simulated Coal-Combustion Flue Gas

Huang Jingyu
, Prince Atta Opoku^*
, Li Junwei
, Eyram Norgbey
, Emmanuel Hagan Brown

^*Corresponding author for this work

Hohai University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

NO is a deadly pollutant that makes up more than 90% NO_x in a flue gas. NO is insoluble in water; thus, its removal is extremely difficult using the SCR method. This study investigates the feasibility of NO removal and energy efficiency from a coal-combustion flue gas connected to a DBD reactor merged with urea. The results showed that the combined effect of urea and the DBD reactor gave a significant increase in the removal of NO. Comparing the removal efficiencies of NO at different urea mass percentages (9%, 17%, 23%, 29%, and 33%), it was found that the optimum concentration of urea for efficient NO removal was 23% because there is enough NH₃ produced at this concentration and less H₂O species generated to consume N^• free radicals by OH to produce more NO in the system. The removal efficiencies of the optimum 23% urea concentration with oxygen [(NO/N₂/O₂/CO(NH₂)₂:23% w/w system] and without oxygen [(NO/N₂/CO(NH₂)₂:23% w/w system] were also compared. It was also found that the addition of urea solution showed a considerably good energy efficiency which implies that the cost of this technology will be effective. The study complements past studies on the efficient removal of NO from the environment.

Original language	English
Article number	120
Journal	Water, Air, and Soil Pollution
Volume	230
Issue number	6
DOIs	https://doi.org/10.1007/s11270-019-4165-2
State	Published - 1 Jun 2019
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Dielectric barrier discharge (DBD)
Nitrogen oxide (NO)
Urea
Weight percentage (w/w)

Access to Document

10.1007/s11270-019-4165-2

Cite this

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title = "Two-Staged Dielectric Barrier Discharge-Urea Configuration for the Removal of NO of NO x in a Simulated Coal-Combustion Flue Gas",

abstract = "NO is a deadly pollutant that makes up more than 90\% NOx in a flue gas. NO is insoluble in water; thus, its removal is extremely difficult using the SCR method. This study investigates the feasibility of NO removal and energy efficiency from a coal-combustion flue gas connected to a DBD reactor merged with urea. The results showed that the combined effect of urea and the DBD reactor gave a significant increase in the removal of NO. Comparing the removal efficiencies of NO at different urea mass percentages (9\%, 17\%, 23\%, 29\%, and 33\%), it was found that the optimum concentration of urea for efficient NO removal was 23\% because there is enough NH3 produced at this concentration and less H2O species generated to consume N• free radicals by OH to produce more NO in the system. The removal efficiencies of the optimum 23\% urea concentration with oxygen [(NO/N2/O2/CO(NH2)2:23\% w/w system] and without oxygen [(NO/N2/CO(NH2)2:23\% w/w system] were also compared. It was also found that the addition of urea solution showed a considerably good energy efficiency which implies that the cost of this technology will be effective. The study complements past studies on the efficient removal of NO from the environment.",

keywords = "Dielectric barrier discharge (DBD), Nitrogen oxide (NO), Urea, Weight percentage (w/w)",

author = "Huang Jingyu and Opoku, \{Prince Atta\} and Li Junwei and Eyram Norgbey and Brown, \{Emmanuel Hagan\}",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature Switzerland AG.",

year = "2019",

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doi = "10.1007/s11270-019-4165-2",

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T1 - Two-Staged Dielectric Barrier Discharge-Urea Configuration for the Removal of NO of NO x in a Simulated Coal-Combustion Flue Gas

AU - Jingyu, Huang

AU - Opoku, Prince Atta

AU - Junwei, Li

AU - Norgbey, Eyram

AU - Brown, Emmanuel Hagan

PY - 2019/6/1

Y1 - 2019/6/1

N2 - NO is a deadly pollutant that makes up more than 90% NOx in a flue gas. NO is insoluble in water; thus, its removal is extremely difficult using the SCR method. This study investigates the feasibility of NO removal and energy efficiency from a coal-combustion flue gas connected to a DBD reactor merged with urea. The results showed that the combined effect of urea and the DBD reactor gave a significant increase in the removal of NO. Comparing the removal efficiencies of NO at different urea mass percentages (9%, 17%, 23%, 29%, and 33%), it was found that the optimum concentration of urea for efficient NO removal was 23% because there is enough NH3 produced at this concentration and less H2O species generated to consume N• free radicals by OH to produce more NO in the system. The removal efficiencies of the optimum 23% urea concentration with oxygen [(NO/N2/O2/CO(NH2)2:23% w/w system] and without oxygen [(NO/N2/CO(NH2)2:23% w/w system] were also compared. It was also found that the addition of urea solution showed a considerably good energy efficiency which implies that the cost of this technology will be effective. The study complements past studies on the efficient removal of NO from the environment.

AB - NO is a deadly pollutant that makes up more than 90% NOx in a flue gas. NO is insoluble in water; thus, its removal is extremely difficult using the SCR method. This study investigates the feasibility of NO removal and energy efficiency from a coal-combustion flue gas connected to a DBD reactor merged with urea. The results showed that the combined effect of urea and the DBD reactor gave a significant increase in the removal of NO. Comparing the removal efficiencies of NO at different urea mass percentages (9%, 17%, 23%, 29%, and 33%), it was found that the optimum concentration of urea for efficient NO removal was 23% because there is enough NH3 produced at this concentration and less H2O species generated to consume N• free radicals by OH to produce more NO in the system. The removal efficiencies of the optimum 23% urea concentration with oxygen [(NO/N2/O2/CO(NH2)2:23% w/w system] and without oxygen [(NO/N2/CO(NH2)2:23% w/w system] were also compared. It was also found that the addition of urea solution showed a considerably good energy efficiency which implies that the cost of this technology will be effective. The study complements past studies on the efficient removal of NO from the environment.

KW - Dielectric barrier discharge (DBD)

KW - Nitrogen oxide (NO)

KW - Urea

KW - Weight percentage (w/w)

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