The absorption kinetics of NO in NaClO2/NaOH solutions

Hsin Chu; Tsung Wen Chien; Bour Wei Twu

doi:10.1016/S0304-3894(01)00215-1

The absorption kinetics of NO in NaClO₂/NaOH solutions

Hsin Chu, Tsung Wen Chien, Bour Wei Twu

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

93 Citations (Scopus)

Abstract

A combined wet scrubbing SO_x/NO_x removal system is an advanced air pollution control process. In this process, the mechanism of NO removal is relatively unknown. Consequently, absorption of NO by alkaline solutions of NaClO₂ was studied to clarify the reaction kinetics. The experiments were carried out mainly at temperature 50°C which is the common operating temperature for wet scrubbers.The assumption that the absorption occurred under the fast pseudo-mth reaction regime was verified in the experiments. The absorption rate of NO into NaClO₂ solutions was found to be proportional to P_NO,0²and[NaClO₂]₀². The addition of NaOH to solutions of NaClO₂ decreased the absorption rate of NO. The absorption rate of NO at 25°C is lower than at 50°C. In the study, the absorption rate of NO did not change with changing gas flow rates.

Original language	English
Pages (from-to)	241-252
Number of pages	12
Journal	Journal of Hazardous Materials
Volume	84
Issue number	2-3
DOIs	https://doi.org/10.1016/S0304-3894(01)00215-1
Publication status	Published - 2001 Jun 29

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

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10.1016/S0304-3894(01)00215-1

Cite this

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title = "The absorption kinetics of NO in NaClO2/NaOH solutions",

abstract = "A combined wet scrubbing SOx/NOx removal system is an advanced air pollution control process. In this process, the mechanism of NO removal is relatively unknown. Consequently, absorption of NO by alkaline solutions of NaClO2 was studied to clarify the reaction kinetics. The experiments were carried out mainly at temperature 50°C which is the common operating temperature for wet scrubbers.The assumption that the absorption occurred under the fast pseudo-mth reaction regime was verified in the experiments. The absorption rate of NO into NaClO2 solutions was found to be proportional to PNO,02and[NaClO2]02. The addition of NaOH to solutions of NaClO2 decreased the absorption rate of NO. The absorption rate of NO at 25°C is lower than at 50°C. In the study, the absorption rate of NO did not change with changing gas flow rates.",

author = "Hsin Chu and Chien, {Tsung Wen} and Twu, {Bour Wei}",

note = "Funding Information: This study was funded in part by National Science Council, Republic of China (NSC 84-2211-E-006-001).",

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T1 - The absorption kinetics of NO in NaClO2/NaOH solutions

AU - Chu, Hsin

AU - Chien, Tsung Wen

AU - Twu, Bour Wei

N1 - Funding Information: This study was funded in part by National Science Council, Republic of China (NSC 84-2211-E-006-001).

PY - 2001/6/29

Y1 - 2001/6/29

N2 - A combined wet scrubbing SOx/NOx removal system is an advanced air pollution control process. In this process, the mechanism of NO removal is relatively unknown. Consequently, absorption of NO by alkaline solutions of NaClO2 was studied to clarify the reaction kinetics. The experiments were carried out mainly at temperature 50°C which is the common operating temperature for wet scrubbers.The assumption that the absorption occurred under the fast pseudo-mth reaction regime was verified in the experiments. The absorption rate of NO into NaClO2 solutions was found to be proportional to PNO,02and[NaClO2]02. The addition of NaOH to solutions of NaClO2 decreased the absorption rate of NO. The absorption rate of NO at 25°C is lower than at 50°C. In the study, the absorption rate of NO did not change with changing gas flow rates.

AB - A combined wet scrubbing SOx/NOx removal system is an advanced air pollution control process. In this process, the mechanism of NO removal is relatively unknown. Consequently, absorption of NO by alkaline solutions of NaClO2 was studied to clarify the reaction kinetics. The experiments were carried out mainly at temperature 50°C which is the common operating temperature for wet scrubbers.The assumption that the absorption occurred under the fast pseudo-mth reaction regime was verified in the experiments. The absorption rate of NO into NaClO2 solutions was found to be proportional to PNO,02and[NaClO2]02. The addition of NaOH to solutions of NaClO2 decreased the absorption rate of NO. The absorption rate of NO at 25°C is lower than at 50°C. In the study, the absorption rate of NO did not change with changing gas flow rates.

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The absorption kinetics of NO in NaClO₂/NaOH solutions

Abstract

All Science Journal Classification (ASJC) codes

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