DocumentCode
3338758
Title
Notice of Retraction
Effect of COD/Sulfate Ratios on Batch Anaerobic Digestion Using Sulfate-Reduction Bacteria
Author
Cao Heng-heng ; Zhang Hong-guo ; Luo Ding-gui ; Chen Yong-heng
Author_Institution
Sch. of Environ. Sci. & Eng., Guangzhou Univ., Guangzhou, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
3
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.
A study on effects of the COD/sulfate ratio on characteristics of sulfate-reduction bacteria (SRB) in activated sludge of a UASB reactor was performed in batch anaerobic digestion experiment. Changes of pH in samples were 7.22~8.17 which was beneficial to the growth of SRB with high sulfate removal efficiency. Sulfate reduction efficiencies of COD/sulfate ratios from 0.43 to 3.03 were 18.7(R1), 38.3(R2), 69.7(R3), 86.6(R4), 94.3(R5), 93.2(R6), 92.3(R7) %. Alone with COD/sulfate ratio increased, sulfate reduction efficiency also increased for R1~R5. However, the result was the opposite for R5~R7. It had been demonstrated that the activity of SRB at the COD/sulfate ratio of 2.17 was the best. Total sulfide produced by sulfate reached the maximum of 100 mg/L at the COD/sulfate ratio of 2.17. Sulfate reduction inhibition could not be caused by the total sulfide.
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.
A study on effects of the COD/sulfate ratio on characteristics of sulfate-reduction bacteria (SRB) in activated sludge of a UASB reactor was performed in batch anaerobic digestion experiment. Changes of pH in samples were 7.22~8.17 which was beneficial to the growth of SRB with high sulfate removal efficiency. Sulfate reduction efficiencies of COD/sulfate ratios from 0.43 to 3.03 were 18.7(R1), 38.3(R2), 69.7(R3), 86.6(R4), 94.3(R5), 93.2(R6), 92.3(R7) %. Alone with COD/sulfate ratio increased, sulfate reduction efficiency also increased for R1~R5. However, the result was the opposite for R5~R7. It had been demonstrated that the activity of SRB at the COD/sulfate ratio of 2.17 was the best. Total sulfide produced by sulfate reached the maximum of 100 mg/L at the COD/sulfate ratio of 2.17. Sulfate reduction inhibition could not be caused by the total sulfide.
Keywords
bioreactors; sludge treatment; wastewater treatment; COD; UASB reactor; activated sludge; anaerobic sludge blanket reactor; batch anaerobic digestion; sulfate ratios; sulfate removal efficiency; sulfate-reduction bacteria; wastewater treatment; Carbon; Inductors; Metals; Microorganisms; Wastewater; Wavelength measurement;
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.2011.5781159
Filename
5781159
Link To Document