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Hybrid forward osmosis/ultrafiltration membrane bag for water purification

Emadzadeh, Daryoush and Matsuura, Takeshi and Ghanbari, Mohammad and iIsmail, Ahmad Fauz (2019) Hybrid forward osmosis/ultrafiltration membrane bag for water purification. Desalination, 468 . ISSN 0011-9164

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Official URL: http://dx.doi.org/10.1016/j.desal.2019.114071


In this work, a novel forward osmosis (FO)-ultrafiltration (UF) hybrid membrane is designed, constructed and its performance tested. The membrane consists of FO and UF membrane bilayer, between which highly concentrated sodium polyacrylate (SPAA) solution is sandwiched as a draw solution. When the FO side of the hybrid membrane is brought into contact with waste water, seawater or brackish water, clean water is drawn into the SPAA solution through FO membrane. The clean water is then squeezed out of the SPAA solution through the UF membrane by applying pressure, which can be either hydraulic or mechanical. Experiments were carried out to prove the validity of the design concept. Some model equations were derived to simulate the performance of the hybrid membrane and the experimental data were analyzed based on the model equations. The novel hybrid membrane is believed to allow the production of RO quality water at the UF pressure that is much lower than the pressure for RO, thus leading to significant reduction of energy consumption for water production.

Item Type:Article
Uncontrolled Keywords:emergency, hybrid membrane, hybrid membrane, water treatment
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89528
Deposited By: Yanti Mohd Shah
Deposited On:22 Feb 2021 14:08
Last Modified:22 Feb 2021 14:08

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