Notice of RetractionMIB Removal by Immobilized Biological Activated Carbon Filter in Comparison with GAC Filter

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.

In order to improve the odour removal ability of the conventional water treatment process, the immobilized biological activated carbon (IBAC) filter as an enhanced biofiltration process was investigated in the study and Songhua River was used as the raw water. The study aimed to evaluate the performance of the IBAC filter in treating 2-methylisobomeol (MIB) by the dominant bacteria immobilized on the granular activated carbon (GAC). The results showed that the six dominant bacteria were effective on MIB removal and the biomass of the dominant bacteria immobilized on the IBAC filter increased after 9d of operation. Long term performance results showed that 79.31% of the MIB was effectively removed by the IBAC filter, more than that of the GAC filter which removal was only 54.45%. The scanning electron microscopy (SEM) photos showed that the bacteria on the IBAC surface flourished to a great amount but didn´t cover the whole area of the activated carbon surface on 180d of operation. The ecology of the dominant bacteria population did not change with the operation. Three dominant bacteria including Pseudomonas putida, Pseudomonas stutzeri and Bacillus subtilis were more adaptable to the IBAC filter surface than the other three dominant bacteria.