S1 Supporting Information (SI) 1 Superior Antifouling Capability of Hydrogel Forward 2 Osmosis Membrane for Treating Wastewaters with 3 High Concentration of Organic Foulants 4 Detao Qin, † Zhaoyang Liu, *, ‡ Zhi Liu, § Hongwei Bai, ‖ and Darren Delai Sun *,⊥ 5 † Energy Research Institute @ NTU, Interdisciplinary Graduate School, Nanyang Technological 6 University, 639798, Singapore 7 ‡ Qatar Environment and Energy Research Institute, Hamad bin Khalifa University, Qatar 8 Foundation, PO Box 5825, Doha, Qatar. E-mail: zhliu@hbku.edu.qa; Fax: +974 4454 0547; Tel: 9 +974 4454 5621 10 § National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, 11 Soochow University, 199 Ren-Ai Road, Suzhou, China 12 ‖ Energy Research Institute @ NTU, Nanyang Technological University, 639798, Singapore 13 ⊥ School of Civil and Environmental Engineering, Nanyang Technological University, 639798, 14 Singapore. E-mail: ddsun@ntu.edu.sg; Fax: +65 6791 0676; Tel: +65 6790 6273 15 16 Number of pages: 28 17 Number of figures: 12 18 Number of tables: 7 19 20