BTEX在幾種台灣土壤中之吸附與降解作用

The Adsorption and Biodegradation of BTEX in Several Taiwan Soils

史盟秀(Meng-Hsiu Shih) ； 李芳胤(Fang-Yin Lee) ； 郭文健(Wen-Chien Kuo) ； 邱瑞宇(Ruey-Yeu Chiou)

《土壤與環境》 5卷4期 (2002/12) Pp. 289-299

https://doi.org/10.30058/SE.200212.0004

摘要

This study first evaluated the adsorption of BTEX (Benzene, Toluene, Ethylbenzene andXylene) in several Taiwan soils and the effects of temperature, moisture, organic matter content and sterilization on adsorption. Then we investigated the biodegradation of BTEX b microorganisms of three sources. The results of BTEX adsorption experiments showed that the soils with higher organic matter and clay contents adsorbed more BTEX. Because the evaporation improved under higher temperature, so the decreased with increasing temperature. The order of BTEX adsorption under three soil water contents was: field capacity ＞60% of field capacity ＞140% of field capacity. This was caused by the higher water content in field capacity condition to retard the evaporation of BTEX. However, if the water content is too high, the competition of the adsorption sites of water with BTEX reduced the adsorption capacity. The application of organic matter indicated that higher organic matter content made soils adsorb more BTEX. Finally, we found that the inoculation of soil microbial extract favored BTEX decomposition, and the fermented extract had higher efficiency than the unfermented.

關鍵字

BTEX ； 吸附 ； 生物降解

並列摘要

This study first evaluated the adsorption of BTEX (Benzene, Toluene, Ethylbenzene andXylene) in several Taiwan soils and the effects of temperature, moisture, organic matter content and sterilization on adsorption. Then we investigated the biodegradation of BTEX b microorganisms of three sources. The results of BTEX adsorption experiments showed that the soils with higher organic matter and clay contents adsorbed more BTEX. Because the evaporation improved under higher temperature, so the decreased with increasing temperature. The order of BTEX adsorption under three soil water contents was: field capacity ＞60% of field capacity ＞140% of field capacity. This was caused by the higher water content in field capacity condition to retard the evaporation of BTEX. However, if the water content is too high, the competition of the adsorption sites of water with BTEX reduced the adsorption capacity. The application of organic matter indicated that higher organic matter content made soils adsorb more BTEX. Finally, we found that the inoculation of soil microbial extract favored BTEX decomposition, and the fermented extract had higher efficiency than the unfermented.

並列關鍵字

BTEX ； Adsorption ； Biodegradation