DocumentCode
3342784
Title
Notice of Retraction
Use of a PFU Microbial Community to Evaluate the Toxicity of Leachate from Municipal Solid Waste Landfills of Various Ages
Author
Ting Liu ; Zhulei Chen ; Si Chen
Author_Institution
Sch. of Environ. Sci. & Eng., Huangshi Inst. of Technol., Huangshi, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Leachate from landfill has become a serious environmental concern in China. The objective of this investigation was to study the feasibility of using the PFU microbial community as a biological indicator to assess the toxicity of leachates. Leachates from seven municipal solid waste landfills of various ages in Wuhan, China were used to develop short-term acute toxicity testing. Bioassays were conducted recording toxicity against PFU microbial communities as median inhibition concentrations (EC50 values) of species EC50 (S) and diversity index EC50 (DI) after 24 h and 48 h exposures. PFU microbial communities were sensitive to the leachate samples in the range of test concentrations, and the EC50s (S) oscillated between 0.82% and 4.67% after 24 h exposure, whilst the EC50s (DI) were between 0.80% and 4.71% The results showed that leachate toxicity decreased as landfill age increased. Multivariate analysis showed that toxicity was dependent on ammonia concentration (NH3-N) and chemical oxygen demand (COD).
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Leachate from landfill has become a serious environmental concern in China. The objective of this investigation was to study the feasibility of using the PFU microbial community as a biological indicator to assess the toxicity of leachates. Leachates from seven municipal solid waste landfills of various ages in Wuhan, China were used to develop short-term acute toxicity testing. Bioassays were conducted recording toxicity against PFU microbial communities as median inhibition concentrations (EC50 values) of species EC50 (S) and diversity index EC50 (DI) after 24 h and 48 h exposures. PFU microbial communities were sensitive to the leachate samples in the range of test concentrations, and the EC50s (S) oscillated between 0.82% and 4.67% after 24 h exposure, whilst the EC50s (DI) were between 0.80% and 4.71% The results showed that leachate toxicity decreased as landfill age increased. Multivariate analysis showed that toxicity was dependent on ammonia concentration (NH3-N) and chemical oxygen demand (COD).
Keywords
geochemistry; waste disposal; China; PFU microbial community; Wuhan; ammonia concentration; bioassays; biological indicator; chemical oxygen demand; diversity index EC50; landfill age; leachate samples; leachate toxicity; median inhibition concentrations; multivariate analysis; municipal solid waste landfills; short-term acute toxicity testing; species EC50; Board of Directors; Communities; Correlation; Indexes; Microorganisms; Solids; Water pollution;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5781370
Filename
5781370
Link To Document