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Supporting Information

Forward Osmosis Membranes for Water Production

Qian Yang1, Kai Yu Wang1, Tai-Shung Chung1, 2*

1Department of Chemical and Biomolecular Engineering

National University of Singapore, Singapore 119260

2Singapore-MIT Alliance

National University of Singapore, Singapore 119260

Corresponding author phone: +65-65166645; fax: +65-67791936; Email: chencts@nus.edu.sg

Number of Pages: 2

Number of Figures: 1

Environmental Science & Technology

February 10, 2009

[pic]

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OL

Inner-layer

Outer-layer

1 μm

1.53 μm

10.61 μm

Deliberately delaminated fiber

10 μm

CS

10 μm

Figure S1: SEM images of PBI-PES/PVP dual layer FO membrane

CS-cross section; IL-inner layer; OL-outer layer; IL-IS: inner layer’s inner surface;

IL-OS: inner layer’s outer surface; OL-IS: outer layer’s inner surface; OL-OS: outer layer’s outer surface

OL-IS

100 nm

100 nm

10 μm

100 nm

1 μm

OL-OS

IL-IS

IL-IS

IL-OS

IL

Interface

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