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Forward Osmosis (FO) Membrane Fouling Mitigation during the Concentration of Cows' Urine

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Title: Forward Osmosis (FO) Membrane Fouling Mitigation during the Concentration of Cows' Urine
Authors: Guizani, Mokhtar Browse this author
Ito, Ryusei Browse this author →KAKEN DB
Matsuda, Takato Browse this author
Keywords: forward osmosis
osmotic backwash
chemical cleaning
Issue Date: Feb-2022
Publisher: MDPI
Journal Title: Membranes
Volume: 12
Issue: 2
Start Page: 234
Publisher DOI: 10.3390/membranes12020234
Abstract: FO membrane fouling mitigation during the concentration of cows' urine was investigated. In particular, the effects on the permeability recovery of cleaning methods such as membrane washing with deionized (DI) water, osmotic backwash, and chemical cleaning were studied. The characterization of foulants that accumulated on the membrane surface was found to be rich in sugars and proteins. The foulants were effectively removed by de-ionized water circulation (washing) and osmotic backwash. While osmotic back was more effective, it did not fully recover the permeability of the membrane. The foulants absorbed in the membrane pores were found to be mainly composed of sugars. Soaking the membrane in a solution of NaClO enabled the removal of foulants absorbed inside the membrane. It was revealed that soaking in 1% NaClO solution for 30 min achieved the best results (83% permeability recovery), while soaking for a longer time (10 h) using 0.2% NaClO resulted in counterproductive results.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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