NDLI: Biofilm coupled with UV irradiation for phenol degradation and change of its community structure

Content Provider	Springer Nature Link
Author	Xia, Siqing Yan, Ning Zhu, Jun Zhang, Yongming
Copyright Year	2011
Abstract	The extensive use of phenol compounds and the inability to remove these compounds during wastewater treatment have resulted in the widespread occurrence of phenols in the natural environment. Phenols have been linked to serious risks to human and environmental health. Hence, the need to develop technologies that can effectively remove phenols from wastewater and source waters is a pressing challenge. In this study, light ceramic particles were immersed in activated sludge acclimated to degrade phenol, and microorganisms were allowed to attach to the particles surface to form biofilm. Then the ceramic particles with biofilm were moved into the photolytic circulating-bed biofilm reactor made of quartz glass, which was used for the degradation of phenol by three protocols: photolysis with UV light alone (P), biodegradation alone (B), and the two mechanisms operating simultaneously (photobiodegradation, P&B). The experimental results indicated that phenol removal rate was quickest by B experiment. However, P&B experiment gave more complete mineralization of phenol than that by other protocols. During P&B experiment, the microorganisms grown on porous ceramic carrier still kept the bioactivity degrading phenol, even under UV light irradiation. However, the dominant members of the bacterial community changed dramatically after the intimately coupled photobiodegradation, according to molecular biological analysis to the biofilm. Whereas Beijerinckia sp. was the dominant strain in the inoculum, it was replaced by Thauera sp. MZ1T that played a main role on degrading phenol during P&B experiment.
Starting Page	607
Ending Page	614
Page Count	8
File Format	PDF
ISSN	16157591
Journal	Bioprocess Engineering
Volume Number	34
Issue Number	5
e-ISSN	16157605
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-01-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ultraviolet irradiation Biofilm Phenol Photolytic circulating-bed biofilm reactor Molecular analysis Biotechnology Industrial Chemistry/Chemical Engineering Industrial and Production Engineering Food Science Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Biotechnology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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