Int. J. Environ. Res. Public Health 2010, 7(9), 3489-3498; doi:10.3390/ijerph7093489
Article

Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine

Received: 1 August 2010; in revised form: 31 August 2010 / Accepted: 14 September 2010 / Published: 17 September 2010
(This article belongs to the Special Issue Indoor Air Pollution and Human Health)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The irreversible removal of acetaldehyde from indoor air via a chemical reaction with amino acids was investigated. To compare effectiveness, five types of amino acid (glycine, L-lysine, L-methionine, L-cysteine, and L-cystine) were used as the reactants. First, acetaldehyde-laden air was introduced into aqueous solutions of each amino acid and the removal abilities were compared. Among the five amino acids, L-cysteine solution showed much higher removal efficiency, while the other amino acids solutions didn’t show any significant differences from the removal efficiency of water used as a control. Next, as a test of the removal abilities of acetaldehyde by semi-solid L-cysteine, a gel containing L-cysteine solution was put in a fluororesin bag filled with acetaldehyde gas, and the change of acetaldehyde concentration was measured. The L-cysteine-containing gel removed 80% of the acetaldehyde in the air within 24 hours. The removal ability likely depended on the unique reaction whereby acetaldehyde and L-cysteine rapidly produce 2-methylthiazolidine-4-carboxylic acid. These results suggested that the reaction between acetaldehyde and L-cysteine has possibilities for irreversibly removing toxic acetaldehyde from indoor air.
Keywords: acetaldehyde; irreversibly removal; L-cysteine; bubbling method; L-cysteine-containing gel
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MDPI and ACS Style

Yamashita, K.; Noguchi, M.; Mizukoshi, A.; Yanagisawa, Y. Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine. Int. J. Environ. Res. Public Health 2010, 7, 3489-3498.

AMA Style

Yamashita K, Noguchi M, Mizukoshi A, Yanagisawa Y. Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine. International Journal of Environmental Research and Public Health. 2010; 7(9):3489-3498.

Chicago/Turabian Style

Yamashita, Kyoko; Noguchi, Miyuki; Mizukoshi, Atsushi; Yanagisawa, Yukio. 2010. "Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine." Int. J. Environ. Res. Public Health 7, no. 9: 3489-3498.

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