Removal of acetaldehyde gas using wet scrubber coupled with photo-Fenton reaction

Masahiro Tokumura; Atsushi Mizukoshi; Miyuki Noguchi; Yuko Wada; Yuri Usami; Takako Yamaki; Yukio Yanagisawa; Masahiro Tokumura; Atsushi Mizukoshi; Miyuki Noguchi; Yuko Wada; Yuri Usami; Takako Yamaki; Yukio Yanagisawa

doi:10.3934/environsci.2016.1.159

AIMS Environmental Science

2016, Volume 3, Issue 1: 159-167. doi: 10.3934/environsci.2016.1.159

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Removal of acetaldehyde gas using wet scrubber coupled with photo-Fenton reaction

1.
Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan
2.
Tokyo Metropolitan Industrial Technology Research Institute, Nishigaoka 3-13-10, Kita-ku, Tokyo 115-8586, Japan
3.
Department of Chemical System Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan

Received: 12 January 2016 Accepted: 21 March 2016 Published: 28 March 2016

The feasibility of the combined air-cleaning method, which consisted of a wet scrubber and the photo-Fenton reaction, in the removal of gaseous acetaldehyde was evaluated. An acetaldehyde-gas removal efficiency of 99% was achieved in the one-pass test (residence time of 17 s) using an inlet acetaldehyde-gas concentration of 1000 ppb at an initial total-iron-ion concentration of 50 mg L⁻¹ and initial hydrogen peroxide concentration of 630 mg L⁻¹. Even at the low initial total-iron-ion concentration of 4 mg L⁻¹, a removal efficiency of 92% was achieved. The acetaldehyde removal efficiency was relatively independent of the initial hydrogen peroxide concentration. UV irradiation further augmented the rate of the photo-Fenton reaction leading to enhanced acetaldehyde-gas removal.
- Acetaldehyde,
- air-cleaning method,
- chemical scrubbing,
- photo-Fenton reaction,
- wet scrubber
Citation: Masahiro Tokumura, Atsushi Mizukoshi, Miyuki Noguchi, Yuko Wada, Yuri Usami, Takako Yamaki, Yukio Yanagisawa. Removal of acetaldehyde gas using wet scrubber coupled with photo-Fenton reaction[J]. AIMS Environmental Science, 2016, 3(1): 159-167. doi: 10.3934/environsci.2016.1.159

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Abstract

The feasibility of the combined air-cleaning method, which consisted of a wet scrubber and the photo-Fenton reaction, in the removal of gaseous acetaldehyde was evaluated. An acetaldehyde-gas removal efficiency of 99% was achieved in the one-pass test (residence time of 17 s) using an inlet acetaldehyde-gas concentration of 1000 ppb at an initial total-iron-ion concentration of 50 mg L⁻¹ and initial hydrogen peroxide concentration of 630 mg L⁻¹. Even at the low initial total-iron-ion concentration of 4 mg L⁻¹, a removal efficiency of 92% was achieved. The acetaldehyde removal efficiency was relatively independent of the initial hydrogen peroxide concentration. UV irradiation further augmented the rate of the photo-Fenton reaction leading to enhanced acetaldehyde-gas removal.

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