NDLI: 2,4,6-trichlorophenol (TCP) photobiodegradation and its effect on community structure

Content Provider	Springer Nature Link
Author	Zhang, Yongming Pu, Xuejing Fang, Miaomiao Zhu, Jun Chen, Lujun Rittmann, Bruce E.
Copyright Year	2012
Abstract	The mechanisms occurring in a photolytic circulating-bed biofilm reactor (PCBBR) treating 2,4,6-trichlorophenol (TCP) were investigated using batch experiments following three protocols: photodegradation alone (P), biodegradation alone (B), and intimately coupled photodegradation and biodegradation (P&B). Initially, the ceramic particles used as biofilm carriers rapidly adsorbed TCP, particularly in the B experiments. During the first 10 min, the TCP removal rate for P&B was equal to the sum of the rates for P and B, and P&B continued to have the greatest TCP removal, with the TCP concentration approaching zero only in the P&B experiments. When phenol, an easily biodegradable compound, was added along with TCP in order to promote TCP mineralization by means of secondary utilization, P&B was superior to P and B in terms of mineralization of TCP, giving 95% removal of chemical oxygen demand (COD). The microbial communities, examined by clone libraries, changed dramatically during the P&B experiments. Whereas Burkholderia xenovorans, a known degrader of chlorinated aromatics, was the dominant strain in the TCP-acclimated inoculum, it was replaced in the P&B biofilm by strains noted for biofilm formation and biodegrading non-chlorinated aromatics.
Starting Page	575
Ending Page	583
Page Count	9
File Format	PDF
ISSN	09239820
Journal	Biodegradation
Volume Number	23
Issue Number	4
e-ISSN	15729729
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-01-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biodegradation Biofilm Photolysis Community structure Trichlorophenol Geochemistry Soil Science & Conservation Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Terrestrial Pollution Microbiology Waste Management/Waste Technology
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Environmental Engineering Bioengineering Microbiology

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