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Membranes 2011, 1(2), 119-131; doi:10.3390/membranes1020119

Article

Experimental Study of Fouling and Cleaning of Sintered Stainless Steel Membrane in Electro-Microfiltration of Calcium Salt Particles

Frank G. F. Qin ^1,* , John Mawson ²  and Xin An Zeng ³

¹ Research Center of Distributed Energy Systems, Dongguan University of Technology, Dongguan, Guangdong 523808, China ² Institute of Food, Nutrition & Human Health, Massey University, Palmerston North, 4401, New Zealand ³ South China University of Technology, Guangzhou, Guangdong 510640, China

* Author to whom correspondence should be addressed.

Received: 8 February 2011; in revised form: 30 April 2011 / Accepted: 11 May 2011 / Published: 30 May 2011

Download PDF Full-Text [335 KB, uploaded 30 May 2011 10:47 CEST]

Abstract: Sintered stainless steel (SSS) microfiltration membranes, which served as electrode directly, were used for the experiment of separating Alamin, a calcium salt and protein containing particles, found in dairy processing. Fouling and cleaning of the SSS membranes under the application of an external electric field were studied. The imposed electric field was found, diverging the pH of permeate and retentate. This in turn altered the solubility of the calcium salt and impacted the performance of electro microfiltration membrane. Using electric field as an enhanced cleaning-in-place (CIP) method in back flushing SSS membrane was also studied.

Keywords: electro-microfiltration; membrane; cleaning-in-place; sintered stainless steel

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