Notice of RetractionStudy on pressure-sensitivity of PU/PVDF blend hollow fiber membrane filtration

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.

Compared with the filtration performance of PVDF hollow fiber membrane, pressure-sensitivity of Polyurethane/polyvinylidene difluoride (PU/PVDF) blend membrane filtration was studied. The experiment results showed that while operating either under external pressure or internal pressure, membrane flux and trans-membrane pressure (TMP) of the blend membrane appeared non-linear relationship, membrane resistance and membrane flux presented a positive correlation. In addition, for membrane resistance stabilization, the membrane filtration process need to keep up 30min in a constant-flux. It could be analyzed that with the change of working conditions, the structure of micro-void changed accordingly, so the blend membrane exhibit pressure-responsibility. This performance of the blend membrane could enhance recovery of membrane flux, and mitigate membrane fouling during membrane filtering raw water by coagu-flocculation preprocessing.