Open AccessRemoval of acetaldehyde gas using wet scrubber coupled with photo-Fenton reaction
Author(s) -
Masahiro Tokumura,
Atsushi Mizukoshi,
Michihiko Noguchi,
Yuko Wada,
Yuri Usami,
Takako Yamaki,
Yukio Yanagisawa
Publication year - 2016
Publication title -
aims environmental science
Language(s) - English
Resource type - Journals
eISSN - 2372-0352
pISSN - 2372-0344
DOI - 10.3934/environsci.2016.1.159
Subject(s) - scrubber , acetaldehyde , environmental chemistry , wet scrubber , chemistry , environmental science , waste management , pulp and paper industry , photochemistry , organic chemistry , engineering , ethanol
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