NDLI: Effect of dirhamnolipid on the removal of phenol catalyzed by laccase in aqueous solution.

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Effect of dirhamnolipid on the removal of phenol catalyzed by laccase in aqueous solution.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Liu, Zhi-Feng Zeng, Guang-Ming Zhong, Hua Yuan, Xing-Zhong Fu, Hai-Yan Zhou, Mei-Fang Ma, Xiao-Ling Li, Hui Li, Jian-Bing
Description	Author Affiliation: Liu ZF ( College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China. lzf18182002@163.com)
Abstract	In this study, the effects of three surfactants, i.e. the anionic biosurfactant dirhamnolipid (diRL), the cationic surfactant hexadecyltrimethyl ammonium bromide (CTAB), and the anionic surfactant sodium dodecyl sulfate (SDS), on the removal of phenol catalyzed by laccase were studied first. CTAB and SDS were detrimental, while diRL improved phenol removal and was selected for detailed research. The biosurfactant increased the activity of laccase and the removal of phenol with the increase of diRL concentrations from 10.6 to 318 µM. DiRL at 318 µM improved the removal when the initial concentrations of phenol were from 50 to 400 mg/l. In particular, the removal of phenol with 318 µM diRL was 4.3-6.4 folds that of the controls within 24 h when the initial concentration of phenol was 400 mg/l. The presence of diRL at 318 µM also caused the complete removal (above 98%) of phenol at concentrations from 50 to 400 mg/l after 24 h. The enhancement of phenol removal was over a wide range of pH and temperatures, and the highest removal efficiency was obtained at pH 6.0 and 50°C. The results suggest that diRL had potential application in the enhancement of phenols removal catalyzed by laccase in water treatment or remediation.
File Format	HTM / HTML
ISSN	09593993
Issue Number	1
Volume Number	28
e-ISSN	15730972
Journal	World Journal of Microbiology and Biotechnology
Language	English
Publisher	Springer
Publisher Date	2012-01-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water Pollutants, Chemical Biodegradation, Environmental Water Surface-active Agents Research Support, Non-u.s. Gov't Discipline Microbiology Temperature Cetrimonium Compounds Isolation & Purification Pharmacology Metabolism Sodium Dodecyl Sulfate Journal Article Discipline Biotechnology Phenol Glycolipids Solutions Trametes Catalysis Hydrogen-ion Concentration Kinetics Enzymology Evaluation Studies Laccase
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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