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    • ISSN: 2010-0264
    • Frequency: Bimonthly (2010-2014); Monthly (Since 2015)
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
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Editor-in-chief
The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
IJESD 2013 Vol.4(2): 111-115 ISSN: 2010-0264
DOI: 10.7763/IJESD.2013.V4.316

Biofilm Growth Characteristics at Different Diesel Leakage Concentration

Fang Liu, Wei Yang, HuiYun Zhong, JinJin Lu, and Chaocheng Zhao
Abstract—Petroleum products leakages result in important effects on the normal operation of circulating cooling water system. However, relatively little research has been done to explore effects of petroleum products leakages on biofilm growth characteristics. In this study, diesel as the experimental subject representing petroleum products, effects of diesel addition on biofilm growth characteristics were investigated. Increase of diesel addition led to biofilm EPS increase with diesel concentration less than 200 mg/L, then EPS content were kept relatively stable with diesel concentration more than 200 mg/L. Protein contents were found at relatively higher levels than polysaccharides in the biofilm with diesel concentration more than 200 mg/L. Expect for 100 mg/L diesel, increasing diesel concentration enhanced biofilm detachment ratio with respect to the control test. Although biofilm wet weight tended to increase with diesel concentration rising from 0 to 1500 mg/L, there was a marked reduction in lipid phosphorus content with increase of diesel concentration from 200 to 1500 mg/L. The reduction indicated that diesel was toxic to microbial population in biofilm.

Index Terms—Circulating cooling water, leakage, diesel, biofilm, growth characteristics.

The authors are with the College of Chemical Engineering, China University of Petroleum, Qingdao 266555 (e-mail: liufangfw@163.com, yangwei6835@163.com, huiyun0102@126.com).

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Cite:Fang Liu, Wei Yang, HuiYun Zhong, JinJin Lu, and Chaocheng Zhao, "Biofilm Growth Characteristics at Different Diesel Leakage Concentration," International Journal of Environmental Science and Development vol. 4, no. 2, pp. 111-115, 2013.

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