Transcript Formation Of Dynamic Membranes With Crossflow

Formation Of Dynamic Membranes With Crossflow
Microfiltration
AlMalack, MH; Anderson, GK
ELSEVIER SCIENCE BV, JOURNAL OF MEMBRANE SCIENCE; pp: 287-296; Vol: 112
King Fahd University of Petroleum & Minerals
http://www.kfupm.edu.sa
Summary
A dynamic membrane is one of the anti-fouling techniques in the literature, but it has
not been thoroughly studied. The formation of a MnO2 dynamic membrane on top of
a polyester primary membrane was investigated. The MnO2 used in the investigation
was precipitated from potassium permanganate (KMnO4) solution using sodium
formate (HCOONa). The study showed that formation of dynamic membranes with
particle sizes less than the pore size of the primary membrane was found to proceed
according to the standard law of filtration, in the first stages of membrane formation.
Later, as particles start to bridge the pores and precipitate on the membrane surface,
dynamic membrane formation was found to obey the cake filtration model. General
equations to describe each case of dynamic membrane formation were obtained.
When wastewater was treated using the dynamic membrane, particles were found to
precipitate in the same pattern as in the case of dynamic membrane formation.
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© Copyright: King Fahd University of Petroleum & Minerals;
http://www.kfupm.edu.sa
©
Copyright: King Fahd University of Petroleum & Minerals;
http://www.kfupm.edu.sa