J. Technology and Education, Vol.16, No.2, pp.63-67, 2009

研究論文

金属切削油洗浄液から発生する不快臭気の光触媒処理による低減効果

　

木幡 進^＊1，川口 寿奈，TRUONG CAO TUE，本村 朋子， 種村 公平¹，弓原 多代¹

　

八代工業高等専門学校生物工学科

（¹現在：熊本高等専門学校生物化学システム工学科）

（〒866-8501八代市平山新町2627）

*kohata@kumamoto-nct.ac.jp

　

Using Photo-catalytic Devices to Reduce the Offensive Odor Emanating from a Cleaning Fluid Used on Metal Cutting Oil

　

Susumu KOHATA,¹ Jyuna KAWAGUCHI, Troung Cao TUE, Tomoko MOTOMURA,

Kouhei TANEMURA,¹ and Kazuyo YUMIHARA¹

Department of Bioengineering, Yatsushiro National College of Technology

¹Present address: Department of Biological and Chemical Systems Engineering,

Kumamoto National College of Technology

(Hirayama-shinmachi, Yatsushiro, Kumamoto 866-8501, Japan)

　

(Received November 20, 2009; Accepted December 7, 2009)

　

Abstract

The cleaning fluid used to remove metal cutting oil that adheres to newly machined engine blocks emits an offensive odor. Prototype photo-catalytic devices were used to examine the degree to which an offensive odor emanating from 20L and 600L of fluid was reduced in laboratory and factory settings, respectively. In the experiment, no immediate reduction of the offensive odor was observed. However, the number of microorganisms and the overall odor and its components, including ammines, sulfur, and hydrogen sulfide, were reduced after the prototype photo-catalytic devices had been used for several days. In conclusion, it took two weeks to eliminate the offensive odor with the use of the prototype devices in a factory setting.

Key words: Odor, Metal Cutting Oil, Cleaning fluid, Microorganisms, Photo-catalytic devices