Hydrophilic and Compressible Aerogel: A Novel Draw Agent in Forward Osmosis

NaCl (1 M), and there was no nonreverse osmosis phenomenon. The water fluxes were stabilized in the range of 5-6.5 LMH during recycle process of absorbing and releasing water as high as 100 times. It also had a great desalination capacity (water flux was 7.49 ± 0.61 LMH) with the seawater (Huanghai coast) as the feed solution. Moreover, the water production and regeneration process of the SA-GO aerogel can be rapidly and cost-effectively accomplished with low-strength mechanical compression (merely 1 kPa). The results present that the SA-GO aerogels as a promising, innovative draw agent can make the FO process simpler, more efficient, and lower energy consumption. It can be a potential material for hydration bags to fast and repeatable product fresh water from saline water or wastewater.